/* ==================== 绒兽社区 · 绒夜星河 v5.1 ==================== */
/* 美学方向：深夜星河 × 暖橙窗光 × 编辑杂志感
   字体：ZCOOL XiaoWei (display) + Ma Shan Zheng (手写) + Noto Serif SC (正文) + Plus Jakarta Sans (UI) */


:root {
  /* —— 夜色基底 —— */
  --ink: #0F0F14;
  --ink-2: #141416;
  --ink-3: #1B1B1F;
  --ink-4: #242429;
  --ink-5: #303038;
  --card: #17171A;
  --card-2: #202024;

  /* —— 暖橙窗光 —— */
  --amber: #FA9F58;
  --amber-2: #E8853D;
  --amber-3: #FFB870;
  --amber-deep: #C96A2A;
  --amber-soft: rgba(250, 159, 88, 0.1);
  --amber-soft-2: rgba(250, 159, 88, 0.06);

  /* —— 星光蓝 —— */
  --star: #B5E3FF;
  --star-2: #7BAACC;
  --star-soft: rgba(181, 227, 255, 0.08);

  /* —— 月光金 —— */
  --gold: #F5D78A;
  --gold-soft: rgba(245, 215, 138, 0.1);

  /* —— 文字 —— */
  --cream: #F5E6D3;
  --cream-2: #D4C4A8;
  --cream-3: #9C8B73;
  --cream-4: #6B5D4D;

  /* —— 边框 —— */
  --line: rgba(245, 230, 211, 0.06);
  --line-2: rgba(245, 230, 211, 0.12);
  --line-3: rgba(250, 159, 88, 0.2);
  --line-star: rgba(181, 227, 255, 0.15);

  /* —— 阴影 —— */
  --sh-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --sh: 0 8px 28px rgba(0, 0, 0, 0.35);
  --sh-lg: 0 24px 60px rgba(0, 0, 0, 0.5);
  --sh-amber: 0 8px 32px rgba(250, 159, 88, 0.12);
  --sh-glow: 0 0 60px rgba(250, 159, 88, 0.15);

  /* —— 缓动 —— */
  --t: all 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: all 0.25s cubic-bezier(0.22, 1, 0.36, 1);

  /* —— 字体 —— */
  --f-display: "ZCOOL XiaoWei", "Noto Serif SC", serif;
  --f-brush: "Ma Shan Zheng", "ZCOOL XiaoWei", cursive;
  --f-body: "Noto Serif SC", "ZCOOL XiaoWei", serif;
  --f-ui: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, sans-serif;

  /* —— 圆角 —— */
  --r-sm: 8px;
  --r: 8px;
  --r-lg: 8px;
  --r-xl: 8px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; }
body {
  font-family: var(--f-body);
  background: var(--ink);
  color: var(--cream);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-weight: 400;
  touch-action: pan-y;
}

/* ========== 全站自定义鼠标样式（仅桌面端）========== */
/* 设计:暖橙发光圆点 + 拖尾光环,呼应"绒夜星河"美学 */
@media (hover: hover) and (pointer: fine) {
  /* 用 * + !important 强制覆盖所有元素自身的 cursor 声明
     (button/a/.feature-card/.vibe-card 等都有 cursor:pointer) */
  *, *::before, *::after {
    cursor: none !important;
  }
  /* 输入框保留系统文本光标,方便编辑 */
  input, textarea, select, [contenteditable="true"] {
    cursor: text !important;
  }
}

/* 自定义光标主体:JS 驱动,见 main.js */
.zm-cursor {
  position: fixed; top: 0; left: 0; pointer-events: none; z-index: 2147483647;
  mix-blend-mode: screen; will-change: transform; opacity: 0;
  transition: opacity .25s ease;
}
.zm-cursor.zm-ready { opacity: 1; }
.zm-cursor-dot {
  position: absolute; left: 0; top: 0; width: 8px; height: 8px; margin: -4px 0 0 -4px;
  background: #FA9F58; border-radius: 50%;
  box-shadow: 0 0 10px rgba(250, 159, 88, 0.9), 0 0 22px rgba(250, 159, 88, 0.5);
}
.zm-cursor-ring {
  position: absolute; left: 0; top: 0; width: 36px; height: 36px; margin: -18px 0 0 -18px;
  border: 1.5px solid rgba(250, 159, 88, 0.55); border-radius: 50%;
  transition: width .22s cubic-bezier(.2,.8,.2,1), height .22s cubic-bezier(.2,.8,.2,1),
              margin .22s cubic-bezier(.2,.8,.2,1), border-color .22s ease, background .22s ease;
}
/* 悬停可交互元素:光环放大变亮 */
.zm-cursor.zm-hover .zm-cursor-ring {
  width: 54px; height: 54px; margin: -27px 0 0 -27px;
  border-color: rgba(255, 184, 112, 0.85);
  background: rgba(250, 159, 88, 0.08);
}
.zm-cursor.zm-hover .zm-cursor-dot {
  background: #FFB870; box-shadow: 0 0 14px rgba(255, 184, 112, 1), 0 0 28px rgba(250, 159, 88, 0.7);
}
/* 左键按下:光环剧烈收缩 + 星光蓝 + dot 变蓝放大 */
.zm-cursor.zm-down .zm-cursor-ring {
  width: 20px; height: 20px; margin: -10px 0 0 -10px;
  border-color: rgba(181, 227, 255, 1); border-width: 2px;
  background: rgba(181, 227, 255, 0.18);
}
.zm-cursor.zm-down .zm-cursor-dot {
  width: 10px; height: 10px; margin: -5px 0 0 -5px;
  background: #B5E3FF;
  box-shadow: 0 0 14px rgba(181, 227, 255, 1), 0 0 28px rgba(181, 227, 255, 0.7);
}
/* 右键按下:橙色爆发态 + dot 变金色放大 + 脉冲扩散 */
.zm-cursor.zm-right .zm-cursor-ring {
  width: 76px; height: 76px; margin: -38px 0 0 -38px;
  border-color: rgba(250, 159, 88, 1); border-width: 2.5px;
  background: rgba(250, 159, 88, 0.16);
  animation: zm-right-pulse .5s ease-out;
}
.zm-cursor.zm-right .zm-cursor-dot {
  width: 12px; height: 12px; margin: -6px 0 0 -6px;
  background: #F5D78A;
  box-shadow: 0 0 16px rgba(245, 215, 138, 1), 0 0 32px rgba(250, 159, 88, 0.8);
}
@keyframes zm-right-pulse {
  0% { transform: scale(0.6); opacity: 1; }
  60% { transform: scale(1.15); opacity: 0.9; }
  100% { transform: scale(1); opacity: 1; }
}

/* 点击波纹:左键橙色,右键星光蓝 */
.zm-cursor-ripple {
  position: fixed; pointer-events: none; z-index: 2147483646;
  border-radius: 50%; mix-blend-mode: screen;
  animation: zm-ripple .6s ease-out forwards;
}
.zm-cursor-ripple.left {
  border: 2px solid rgba(250, 159, 88, 0.85);
  box-shadow: 0 0 20px rgba(250, 159, 88, 0.6), inset 0 0 12px rgba(250, 159, 88, 0.3);
}
.zm-cursor-ripple.right {
  border: 2px solid rgba(181, 227, 255, 0.85);
  box-shadow: 0 0 20px rgba(181, 227, 255, 0.6), inset 0 0 12px rgba(181, 227, 255, 0.3);
}
@keyframes zm-ripple {
  0% { width: 0; height: 0; opacity: 1; }
  100% { width: 72px; height: 72px; margin: -36px 0 0 -36px; opacity: 0; }
}

/* 点击粒子:4 颗向外飞溅 */
.zm-cursor-spark {
  position: fixed; pointer-events: none; z-index: 2147483646;
  width: 5px; height: 5px; border-radius: 50%; mix-blend-mode: screen;
  animation: zm-spark .55s cubic-bezier(.2,.8,.2,1) forwards;
}
.zm-cursor-spark.s-left { background: #FA9F58; box-shadow: 0 0 8px #FA9F58; }
.zm-cursor-spark.s-right { background: #B5E3FF; box-shadow: 0 0 8px #B5E3FF; }
@keyframes zm-spark {
  0% { transform: translate(0, 0) scale(1); opacity: 1; }
  100% { transform: translate(var(--dx, 0), var(--dy, 0)) scale(0); opacity: 0; }
}

/* 减少动效:禁用波纹和粒子,光标本身保留 */
@media (prefers-reduced-motion: reduce) {
  .zm-cursor-ring { transition: none !important; }
  .zm-cursor-ripple, .zm-cursor-spark { display: none !important; }
}
/* 触屏设备隐藏自定义光标 */
@media (hover: none), (pointer: coarse) {
  .zm-cursor, .zm-cursor-ripple, .zm-cursor-spark { display: none !important; }
  body, html { cursor: auto !important; }
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--t-fast); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: var(--amber); color: var(--ink); }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb { background: var(--ink-4); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--amber-deep); }
.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 36px; }

/* ========== 夜空背景 ========== */
.starfield {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 1000px 700px at 20% 0%, rgba(181, 227, 255, 0.04), transparent 55%),
    radial-gradient(ellipse 800px 600px at 85% 30%, rgba(250, 159, 88, 0.05), transparent 55%),
    radial-gradient(ellipse 600px 500px at 50% 100%, rgba(245, 215, 138, 0.03), transparent 60%),
    var(--ink);
}
.starfield::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(245, 230, 211, 0.4), transparent),
    radial-gradient(1px 1px at 60% 70%, rgba(181, 227, 255, 0.5), transparent),
    radial-gradient(1px 1px at 85% 20%, rgba(245, 215, 138, 0.3), transparent),
    radial-gradient(1.5px 1.5px at 30% 80%, rgba(245, 230, 211, 0.3), transparent),
    radial-gradient(1px 1px at 75% 50%, rgba(181, 227, 255, 0.4), transparent),
    radial-gradient(1px 1px at 45% 15%, rgba(245, 215, 138, 0.4), transparent),
    radial-gradient(1.5px 1.5px at 10% 60%, rgba(245, 230, 211, 0.3), transparent),
    radial-gradient(1px 1px at 90% 85%, rgba(181, 227, 255, 0.4), transparent);
  background-size: 100% 100%;
  opacity: 0.6;
  animation: twinkle 8s ease-in-out infinite;
}
@keyframes twinkle {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}
.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ========== Header ========== */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: 68px;
  background: rgba(10, 19, 34, 0.6);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: var(--t);
}
header.scrolled {
  background: rgba(10, 19, 34, 0.92);
  border-bottom-color: var(--line);
}
.nav-wrap { display: flex; justify-content: space-between; align-items: center; height: 100%; }
.brand { display: flex; align-items: center; gap: 12px; z-index: 1001; }
.brand img {
  width: 36px; height: 36px; border-radius: 10px;
  filter: drop-shadow(0 4px 12px rgba(250, 159, 88, 0.2));
  transition: var(--t);
}
.brand:hover img { transform: scale(1.06) rotate(-4deg); }
.brand-name {
  font-family: var(--f-display);
  font-size: 22px; letter-spacing: 3px; color: var(--cream);
}
nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  color: var(--cream-2); font-size: 14px; font-weight: 500;
  padding: 9px 15px; border-radius: 9px; position: relative;
  font-family: var(--f-ui); transition: var(--t-fast);
}
.nav-link:hover, .nav-link.active { color: var(--cream); background: var(--amber-soft); }
.nav-link.active::after {
  content: ''; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%);
  width: 16px; height: 2px; border-radius: 2px; background: var(--amber);
}
.nav-cta {
  background: linear-gradient(135deg, var(--amber), var(--amber-2));
  color: var(--ink) !important; font-size: 14px; font-weight: 700;
  padding: 10px 20px; border-radius: 10px; margin-left: 8px;
  font-family: var(--f-ui);
  box-shadow: 0 4px 16px rgba(250, 159, 88, 0.25);
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(250, 159, 88, 0.35); }
.menu-toggle {
  display: none; flex-direction: column; gap: 5px;
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--ink-3); border: 1px solid var(--line);
  align-items: center; justify-content: center; z-index: 1001;
}
.menu-toggle span { width: 18px; height: 2px; background: var(--cream); border-radius: 2px; transition: var(--t); }
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== Hero ========== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 110px 0 90px; overflow: hidden; }
.hero-glow {
  position: absolute; top: 20%; right: -5%; width: 700px; height: 700px; border-radius: 50%;
  background: radial-gradient(circle, rgba(250, 159, 88, 0.1) 0%, rgba(250, 159, 88, 0.03) 35%, transparent 70%);
  filter: blur(60px); pointer-events: none; animation: drift 14s ease-in-out infinite;
}
.hero-glow-2 {
  position: absolute; bottom: -10%; left: -10%; width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(181, 227, 255, 0.06) 0%, transparent 65%);
  filter: blur(60px); pointer-events: none; animation: drift 18s ease-in-out infinite reverse;
}
@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.8; }
  50% { transform: translate(-50px, 40px) scale(1.15); opacity: 1; }
}
.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 60px; align-items: center;
}
.hero-left { max-width: 580px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px;
  background: var(--amber-soft); border: 1px solid var(--line-3);
  color: var(--amber-3); font-size: 13px; font-weight: 600;
  font-family: var(--f-ui); margin-bottom: 28px;
}
.hero-badge .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--amber);
  box-shadow: 0 0 12px var(--amber); animation: blink 2.5s infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
.hero-title {
  font-family: var(--f-display);
  font-size: clamp(38px, 5.6vw, 64px);
  line-height: 1.18; letter-spacing: 3px;
  margin-bottom: 22px; font-weight: 400;
  color: var(--cream);
}
.hero-title .t-line {
  display: block; opacity: 0; transform: translateY(28px);
  animation: lineUp 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.hero-title .t-line:nth-child(1) { animation-delay: 0.15s; }
.hero-title .t-line:nth-child(2) { animation-delay: 0.3s; }
.hero-title .t-line:nth-child(3) { animation-delay: 0.45s; }
@keyframes lineUp { to { opacity: 1; transform: translateY(0); } }
.hero-title em {
  font-style: normal; color: var(--amber); position: relative;
  font-family: var(--f-brush); font-size: 0.95em;
  margin: 0 4px;
}
.hero-title .accent { color: var(--star); }
.hero-lead {
  font-size: 16px; color: var(--cream-2); line-height: 1.95;
  margin-bottom: 20px; font-family: var(--f-body);
  opacity: 0; animation: lineUp 0.9s 0.6s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.free-pill {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 18px; border-radius: 999px;
  background: linear-gradient(135deg, var(--amber-soft), var(--gold-soft));
  border: 1px solid var(--line-3);
  margin-bottom: 32px;
  opacity: 0; animation: lineUp 0.9s 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.free-pill .free-icon {
  width: 22px; height: 22px; border-radius: 50%;
  background: linear-gradient(135deg, var(--amber), var(--amber-2));
  display: flex; align-items: center; justify-content: center;
  color: var(--ink); font-weight: 800; font-size: 13px;
  font-family: var(--f-ui);
  box-shadow: 0 0 16px rgba(250, 159, 88, 0.4);
}
.free-pill .free-text {
  font-family: var(--f-brush); font-size: 19px; color: var(--amber-3);
  letter-spacing: 2px;
}
.free-pill .free-sub {
  font-family: var(--f-ui); font-size: 12px; color: var(--cream-3);
  letter-spacing: 1px; padding-left: 10px; border-left: 1px solid var(--line-2);
}
.hero-actions {
  display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px;
  opacity: 0; animation: lineUp 0.9s 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.btn-primary, .btn-ghost {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 28px; border-radius: 12px;
  font-size: 15px; font-weight: 700; font-family: var(--f-ui);
  transition: var(--t); letter-spacing: 0.5px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--amber), var(--amber-2));
  color: var(--ink);
  box-shadow: 0 6px 24px rgba(250, 159, 88, 0.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(250, 159, 88, 0.35); }
.btn-primary.lg { padding: 16px 36px; font-size: 16px; }
.btn-ghost {
  background: transparent; border: 1px solid var(--line-2); color: var(--cream-2);
}
.btn-ghost:hover { border-color: var(--line-3); color: var(--amber-3); background: var(--amber-soft-2); transform: translateY(-2px); }
.hero-stats {
  display: flex; gap: 36px;
  opacity: 0; animation: lineUp 0.9s 0.95s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.stat { display: flex; flex-direction: column; }
.stat b {
  font-size: 18px; font-weight: 800; color: var(--cream);
  font-family: var(--f-ui); letter-spacing: 0.5px;
}
.stat span { font-size: 12px; color: var(--cream-3); font-family: var(--f-ui); letter-spacing: 1px; }

/* Logo 舞台 */
.hero-right { display: flex; justify-content: center; align-items: center; position: relative; }
.logo-stage {
  position: relative; width: 320px; height: 320px;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.logo-ring { position: absolute; border-radius: 50%; }
.logo-ring-1 {
  width: 300px; height: 300px;
  border: 1px solid var(--line);
  animation: spin 30s linear infinite;
  border-top-color: var(--line-3);
}
.logo-ring-2 {
  width: 250px; height: 250px;
  border: 1px dashed var(--line-star);
  animation: spin 22s linear infinite reverse;
}
@keyframes spin { to { transform: rotate(360deg); } }
.logo-halo {
  position: absolute; width: 200px; height: 200px; border-radius: 50%;
  background: radial-gradient(circle, rgba(250, 159, 88, 0.15), transparent 65%);
  filter: blur(20px); animation: pulse-halo 8s ease-in-out infinite;
}
@keyframes pulse-halo {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.1); opacity: 1; }
}
.hero-logo {
  position: relative; z-index: 2; width: 220px; height: 220px;
  filter: drop-shadow(0 16px 48px rgba(250, 159, 88, 0.2));
  animation: float 6s ease-in-out infinite;
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

.scroll-hint {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-size: 11px; color: var(--cream-4); letter-spacing: 3px;
  font-family: var(--f-ui);
  opacity: 0; animation: lineUp 1s 1.4s forwards;
}
.scroll-hint span {
  width: 1px; height: 32px;
  background: linear-gradient(to bottom, var(--amber), transparent);
  animation: scrollPulse 2.5s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.2; transform: scaleY(0.8); }
  50% { opacity: 0.9; transform: scaleY(1.2); }
}

/* ========== 通用 Section ========== */
.section { padding: 120px 0; position: relative; }
.section-head { margin-bottom: 56px; max-width: 720px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700; letter-spacing: 4px;
  text-transform: uppercase;
  padding: 6px 14px; border-radius: 999px;
  margin-bottom: 16px;
  background: var(--amber-soft); border: 1px solid var(--line-3);
  color: var(--amber-3); font-family: var(--f-ui);
}
.kicker.warm { background: rgba(232, 133, 61, 0.1); border-color: rgba(232, 133, 61, 0.2); color: var(--amber-2); }
.kicker.light { background: var(--star-soft); border-color: var(--line-star); color: var(--star); }
.kicker.gold { background: var(--gold-soft); border-color: rgba(245, 215, 138, 0.2); color: var(--gold); }
.kicker::before {
  content: ''; width: 5px; height: 5px; border-radius: 50%;
  background: currentColor;
}
.section-title {
  font-family: var(--f-display);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.3; letter-spacing: 3px;
  margin-bottom: 14px; font-weight: 400;
  color: var(--cream);
}
.section-title .hl { color: var(--amber); position: relative; }
.section-title .hl::after {
  content: ''; position: absolute; bottom: 2px; left: 0; right: 0; height: 8px;
  background: var(--amber-soft); border-radius: 4px; z-index: -1;
}
.section-title .hl-blue { color: var(--star); }
.section-desc {
  font-size: 15.5px; color: var(--cream-3);
  font-family: var(--f-body); line-height: 1.85;
}

/* ========== About ========== */
.about-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr;
  gap: 20px; align-items: stretch;
}
.about-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 34px;
  transition: var(--t); position: relative; overflow: hidden;
}
.about-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-3), transparent);
  opacity: 0; transition: var(--t);
}
.about-card:hover { border-color: var(--line-2); transform: translateY(-4px); box-shadow: var(--sh); }
.about-card:hover::before { opacity: 1; }
.about-card-lg {
  grid-row: span 2;
  background: linear-gradient(160deg, var(--card), var(--card-2));
  display: flex; flex-direction: column; justify-content: space-between;
  position: relative;
}
.about-card-lg::after {
  content: ''; position: absolute; bottom: -50px; right: -50px;
  width: 200px; height: 200px; border-radius: 50%;
  background: radial-gradient(circle, var(--amber-soft), transparent 70%);
  pointer-events: none;
}
/* 大卡左上角引号装饰 */
.about-card-lg > div:first-child::before {
  content: '"'; position: absolute; top: -20px; left: 18px;
  font-family: var(--f-display); font-size: 80px; line-height: 1;
  color: var(--amber); opacity: 0.12; pointer-events: none;
}
.about-card-lg > div:first-child { position: relative; }
.about-card h3 {
  font-family: var(--f-display); font-size: 20px; font-weight: 400;
  letter-spacing: 2px; margin-bottom: 16px; color: var(--cream);
}
.about-card p {
  font-size: 15px; color: var(--cream-2); line-height: 1.9;
  margin-bottom: 12px; font-family: var(--f-body);
}
.about-card p:last-child { margin-bottom: 0; }
.about-mark {
  display: inline-block; font-family: var(--f-brush);
  font-size: 28px; color: var(--amber); margin-bottom: 12px;
  line-height: 1;
}

/* ========== Features ========== */
.features-section {
  background: var(--ink-2); position: relative;
}
.features-section::before, .features-section::after {
  content: ''; position: absolute; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-2), transparent);
  pointer-events: none;
}
.features-section::before { top: 0; }
.features-section::after { bottom: 0; }
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.feature-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 30px 26px 28px;
  transition: var(--t); position: relative; overflow: hidden;
  display: flex; flex-direction: column;
  min-height: 200px;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--amber), var(--gold), transparent);
  transform: scaleX(0); transform-origin: left; transition: var(--t);
}
.feature-card::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at top right, var(--amber-soft-2), transparent 60%);
  opacity: 0; transition: var(--t); pointer-events: none;
}
.feature-card:hover {
  border-color: var(--line-3); transform: translateY(-6px);
  box-shadow: var(--sh-amber), var(--sh);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover::after { opacity: 1; }
/* 角落装饰：右上角小角标 */
.feature-card .feature-num {
  position: absolute; top: 18px; right: 22px;
  font-family: var(--f-display); font-size: 38px;
  color: rgba(250, 159, 88, 0.07); line-height: 1;
  transition: var(--t); font-weight: 400;
}
.feature-card:hover .feature-num { color: rgba(250, 159, 88, 0.18); }
.feature-icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--amber-soft); border: 1px solid var(--line-3);
  color: var(--amber-3); margin-bottom: 16px;
  transition: var(--t); position: relative; z-index: 1;
}
.feature-card:hover .feature-icon {
  transform: scale(1.08) rotate(-5deg);
  background: linear-gradient(135deg, var(--amber), var(--amber-2));
  border-color: var(--amber); color: var(--ink);
  box-shadow: 0 6px 20px rgba(250, 159, 88, 0.3);
}
.feature-card h3 {
  font-family: var(--f-display); font-size: 19px; font-weight: 400;
  letter-spacing: 2px; margin-bottom: 10px; color: var(--cream);
  position: relative; z-index: 1;
}
.feature-card p {
  font-size: 14px; color: var(--cream-2); line-height: 1.8;
  font-family: var(--f-body); position: relative; z-index: 1;
}

/* ========== CTA ========== */
.cta-section { background: var(--ink); }
.cta-box {
  display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 44px;
  align-items: center;
  background: linear-gradient(150deg, var(--ink-3), var(--ink-4));
  border: 1px solid var(--line-2); border-radius: var(--r-xl);
  padding: 56px; position: relative; overflow: hidden;
  box-shadow: var(--sh-lg);
}
.cta-box::before {
  content: ''; position: absolute; top: -50%; right: -20%;
  width: 80%; height: 200%;
  background: radial-gradient(circle, rgba(250, 159, 88, 0.1), transparent 55%);
  pointer-events: none; animation: drift 12s ease-in-out infinite;
}
.cta-box::after {
  content: ''; position: absolute; bottom: -30%; left: -10%;
  width: 60%; height: 150%;
  background: radial-gradient(circle, rgba(181, 227, 255, 0.05), transparent 60%);
  pointer-events: none;
}
.cta-content { position: relative; z-index: 1; }
.cta-content h2 {
  font-family: var(--f-display); font-size: 34px;
  line-height: 1.3; letter-spacing: 3px;
  margin: 14px 0 16px; font-weight: 400; color: var(--cream);
}
.cta-content p {
  font-size: 15px; color: var(--cream-2); line-height: 1.9;
  margin-bottom: 24px; font-family: var(--f-body);
}
.cta-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 30px; }
.cta-tags span {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 14px; border-radius: 999px;
  background: var(--amber-soft); border: 1px solid var(--line-3);
  color: var(--amber-3); font-size: 12.5px; font-weight: 600;
  font-family: var(--f-ui);
}
.cta-visual { position: relative; display: flex; justify-content: center; align-items: center; z-index: 1; }
.cta-visual img {
  width: 200px; height: 200px;
  filter: drop-shadow(0 16px 48px rgba(250, 159, 88, 0.2));
  animation: float 7s ease-in-out infinite;
}

/* ========== 社区氛围 ========== */
.vibe-section { background: var(--ink-2); position: relative; overflow: hidden; }
.vibe-section::before {
  content: ''; position: absolute; top: 10%; right: -10%;
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(181, 227, 255, 0.04), transparent 60%);
  pointer-events: none;
}
.vibe-grid {
  display: grid; grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: minmax(160px, auto);
  gap: 18px;
}
.vibe-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 28px 26px;
  transition: var(--t); position: relative; overflow: hidden;
  display: flex; flex-direction: column;
}
.vibe-card:hover { border-color: var(--line-2); transform: translateY(-4px); box-shadow: var(--sh); }
.vibe-card-lg { grid-column: span 3; grid-row: span 2; background: linear-gradient(160deg, var(--card), var(--card-2)); }
.vibe-card-md { grid-column: span 3; }
.vibe-card-sm { grid-column: span 2; }
.vibe-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--amber-soft); border: 1px solid var(--line-3);
  display: flex; align-items: center; justify-content: center;
  color: var(--amber-3); margin-bottom: 16px; transition: var(--t);
}
.vibe-card:hover .vibe-mark { background: var(--amber-soft-2); transform: rotate(-4deg); }
.vibe-card-lg .vibe-mark { width: 44px; height: 44px; }
.vibe-card h3 {
  font-family: var(--f-display); font-size: 19px; font-weight: 400;
  letter-spacing: 2px; margin-bottom: 10px; color: var(--cream);
}
.vibe-card-lg h3 { font-size: 24px; }
.vibe-card p {
  font-size: 14px; color: var(--cream-2); line-height: 1.85;
  font-family: var(--f-body);
}
.vibe-card-lg p { font-size: 15px; }
.vibe-quote {
  font-family: var(--f-brush); font-size: 22px; color: var(--amber);
  line-height: 1.5; margin-top: 18px; padding-top: 18px;
  border-top: 1px dashed var(--line-2); position: relative;
}
.vibe-quote::before { content: '"'; font-size: 40px; color: var(--amber-deep); position: absolute; top: 8px; left: -4px; opacity: 0.4; }
.vibe-card-sm .vibe-mark { width: 32px; height: 32px; margin-bottom: 12px; }
.vibe-card-sm h3 { font-size: 16px; }
.vibe-card-sm p { font-size: 13px; line-height: 1.75; }

/* ========== 使用流程 ========== */
.flow-section { background: var(--ink); }
.flow-grid { display: flex; align-items: stretch; gap: 0; justify-content: center; }
.flow-item {
  flex: 1; max-width: 300px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 32px 26px;
  transition: var(--t); position: relative;
}
.flow-item:hover { border-color: var(--line-2); box-shadow: var(--sh); transform: translateY(-3px); }
.flow-step {
  display: inline-block; font-size: 12px; font-weight: 700;
  letter-spacing: 2px; color: var(--amber-3);
  background: var(--amber-soft); border: 1px solid var(--line-3);
  padding: 5px 12px; border-radius: 999px;
  margin-bottom: 16px; font-family: var(--f-ui);
}
.flow-item h3 {
  font-family: var(--f-display); font-size: 22px; font-weight: 400;
  letter-spacing: 2px; margin-bottom: 12px; color: var(--cream);
}
.flow-item p {
  font-size: 14px; color: var(--cream-2); line-height: 1.85;
  font-family: var(--f-body);
}
.flow-arrow {
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; color: var(--cream-4); padding: 0 18px;
  font-family: var(--f-ui);
}

/* ========== FAQ (首页手风琴) ========== */
#faq { background: var(--ink-2); }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.faq-col { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r); overflow: hidden; transition: var(--t);
}
.faq-item:hover { border-color: var(--line-2); }
.faq-item.open { border-color: var(--line-3); box-shadow: var(--sh); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 18px 22px; font-size: 14.5px; font-weight: 600;
  color: var(--cream); text-align: left; gap: 14px;
  transition: var(--t-fast); font-family: var(--f-ui);
  letter-spacing: 0.3px;
}
.faq-q:hover { color: var(--amber-3); }
.faq-icon {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--amber-soft); position: relative;
  flex-shrink: 0; transition: var(--t);
}
.faq-icon::before, .faq-icon::after {
  content: ''; position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%); background: var(--amber-3);
  border-radius: 1px; transition: var(--t);
}
.faq-icon::before { width: 10px; height: 2px; }
.faq-icon::after { width: 2px; height: 10px; }
.faq-item.open .faq-icon { background: var(--amber); transform: rotate(45deg); }
.faq-item.open .faq-icon::before, .faq-item.open .faq-icon::after { background: var(--ink); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.45s cubic-bezier(0.22, 1, 0.36, 1); }
.faq-a p {
  padding: 0 22px 20px; font-size: 14px; color: var(--cream-2);
  line-height: 1.85; font-family: var(--f-body);
}
.faq-a a { color: var(--amber-3); border-bottom: 1px dashed var(--line-3); }
.faq-a a:hover { color: var(--amber); }

/* ========== Footer ========== */
footer { background: var(--ink-2); border-top: 1px solid var(--line); padding: 64px 0 30px; position: relative; }
.footer-top { display: flex; justify-content: space-between; gap: 48px; margin-bottom: 40px; }
.footer-brand { display: flex; gap: 14px; align-items: flex-start; max-width: 320px; }
.footer-brand img {
  width: 44px; height: 44px; border-radius: 12px;
  filter: drop-shadow(0 4px 12px rgba(250, 159, 88, 0.15));
}
.footer-brand h3 {
  font-family: var(--f-display); font-size: 20px;
  letter-spacing: 3px; margin-bottom: 4px; font-weight: 400; color: var(--cream);
}
.footer-brand p { font-size: 12.5px; color: var(--cream-3); font-family: var(--f-ui); }
.footer-links { display: flex; gap: 56px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 {
  font-size: 13px; font-weight: 700; color: var(--cream);
  font-family: var(--f-ui); letter-spacing: 1px;
  margin-bottom: 4px;
}
.footer-col a { font-size: 13.5px; color: var(--cream-2); font-family: var(--f-ui); }
.footer-col a:hover { color: var(--amber-3); }
.footer-bottom {
  padding-top: 24px; border-top: 1px solid var(--line);
  text-align: center; font-size: 12.5px; color: var(--cream-4);
  font-family: var(--f-ui); letter-spacing: 0.3px;
}
.footer-bottom a:hover { color: var(--amber-3); }

/* ========== 子页面通用（legal / inner page）========== */
.legal-page { padding: 130px 0 80px; position: relative; min-height: 100vh; }
.legal-back {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--cream-3); font-size: 14px; font-family: var(--f-ui);
  margin-bottom: 32px; transition: var(--t-fast);
  padding: 8px 14px; border-radius: 999px;
  background: var(--ink-3); border: 1px solid var(--line);
}
.legal-back:hover { color: var(--amber-3); transform: translateX(-4px); border-color: var(--line-3); background: var(--amber-soft-2); }
.legal-header { margin-bottom: 48px; padding-bottom: 32px; border-bottom: 1px solid var(--line); position: relative; }
.legal-header::after {
  content: ''; position: absolute; bottom: -1px; left: 0; width: 80px; height: 1px;
  background: linear-gradient(90deg, var(--amber), transparent);
}
.legal-header h1 {
  font-family: var(--f-display); font-size: clamp(32px, 4.5vw, 48px);
  letter-spacing: 4px; margin-bottom: 14px; font-weight: 400; color: var(--cream);
}
.legal-meta {
  display: flex; gap: 18px; align-items: center; flex-wrap: wrap;
  font-size: 13px; color: var(--cream-3); font-family: var(--f-ui);
}
.legal-meta span { display: inline-flex; align-items: center; gap: 6px; }
.legal-meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--cream-4); }
.legal-content { max-width: 820px; }
.legal-content h2 {
  font-family: var(--f-display); font-size: 24px; font-weight: 400;
  letter-spacing: 2px; margin: 40px 0 18px; color: var(--cream);
  padding-left: 14px; border-left: 3px solid var(--amber);
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content h3 {
  font-family: var(--f-display); font-size: 18px; font-weight: 400;
  letter-spacing: 1.5px; margin: 28px 0 14px; color: var(--cream);
  display: flex; align-items: center; gap: 10px;
}
.legal-content h3::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--amber); flex-shrink: 0;
}
.legal-content p {
  font-size: 15px; color: var(--cream-2); line-height: 1.95;
  margin-bottom: 14px; font-family: var(--f-body);
}
.legal-content ul, .legal-content ol { margin: 0 0 18px 4px; }
.legal-content li {
  font-size: 15px; color: var(--cream-2); line-height: 1.95;
  margin-bottom: 10px; padding-left: 22px; position: relative;
  font-family: var(--f-body);
}
.legal-content ul li::before {
  content: ''; position: absolute; left: 0; top: 12px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--amber);
}
.legal-content ol { counter-reset: li; }
.legal-content ol li { counter-increment: li; }
.legal-content ol li::before {
  content: counter(li); position: absolute; left: 0; top: 2px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--amber-soft); border: 1px solid var(--line-3);
  color: var(--amber-3); font-size: 11px; font-weight: 700;
  font-family: var(--f-ui); display: flex; align-items: center; justify-content: center;
}
.legal-content strong { color: var(--cream); font-weight: 600; }
.legal-content a { color: var(--amber-3); border-bottom: 1px dashed var(--line-3); }
.legal-content a:hover { color: var(--amber); }
.legal-content blockquote {
  margin: 20px 0; padding: 16px 22px;
  background: var(--amber-soft-2); border-left: 3px solid var(--amber);
  border-radius: 0 var(--r) var(--r) 0;
  font-size: 14.5px; color: var(--cream-2); font-family: var(--f-body);
}
.legal-content code {
  background: var(--ink-3); padding: 2px 8px; border-radius: 5px;
  font-size: 13px; color: var(--amber-3); font-family: 'SF Mono', Consolas, monospace;
}
.legal-callout {
  margin: 28px 0; padding: 24px 26px;
  background: linear-gradient(135deg, var(--amber-soft), var(--gold-soft));
  border: 1px solid var(--line-3); border-radius: var(--r-lg);
  position: relative; overflow: hidden;
}
.legal-callout::before {
  content: ''; position: absolute; top: -20px; right: -20px;
  width: 80px; height: 80px; border-radius: 50%;
  background: radial-gradient(circle, rgba(250, 159, 88, 0.15), transparent 70%);
}
.legal-callout h4 {
  font-family: var(--f-display); font-size: 17px; font-weight: 400;
  letter-spacing: 1.5px; margin-bottom: 8px; color: var(--amber-3);
  position: relative;
}
.legal-callout p { margin-bottom: 0; color: var(--cream-2); font-size: 14.5px; position: relative; }

/* 嵌套列表层级区分 */
.legal-content ol ul,
.legal-content ul ul,
.legal-content ol ol { margin: 6px 0 12px 4px; }
.legal-content ul ul li::before {
  background: transparent; border: 1px solid var(--cream-4);
  width: 5px; height: 5px; top: 11px;
}
.legal-content ol ul li::before {
  background: var(--cream-4); width: 4px; height: 4px; top: 13px;
}
.legal-content ol ol li::before {
  background: transparent; border: 1px solid var(--amber);
  color: transparent; width: 6px; height: 6px;
}
/* 三级标题 h4（直接子元素，不影响 callout h4） */
.legal-content > h4 {
  font-family: var(--f-ui); font-size: 15px; font-weight: 600;
  letter-spacing: 0.5px; margin: 20px 0 10px; color: var(--cream);
  padding-left: 12px; border-left: 2px solid var(--line-3);
}
/* 子标签：列表项仅含 strong（如"必填信息："） */
.legal-content li:has(> strong:only-child) {
  padding-left: 0; margin-top: 10px; margin-bottom: 4px; list-style: none;
}
.legal-content li:has(> strong:only-child)::before { display: none; }
.legal-content li > strong:only-child {
  display: block; font-size: 14px; color: var(--amber-3);
  letter-spacing: 0.5px; font-family: var(--f-ui);
}
/* callout 内列表 */
.legal-callout ul { margin: 8px 0 4px; }
.legal-callout li { font-size: 14px; margin-bottom: 6px; line-height: 1.8; }
.legal-callout li::before { top: 11px; }
/* 签名块 */
.legal-sig {
  text-align: right;
  background: linear-gradient(135deg, var(--ink-3), var(--amber-soft));
  border: 1px dashed var(--line-3);
}
.legal-sig p {
  font-family: var(--f-display); color: var(--cream);
  font-size: 15px; letter-spacing: 1px; margin-bottom: 4px;
}
.legal-sig p:last-child {
  color: var(--cream-3); font-size: 13px;
  font-family: var(--f-ui); letter-spacing: 0;
}

/* ========== Team 页面（重做：定制卡片）========== */
.team-hero {
  text-align: center; padding: 30px 0 50px;
  position: relative;
}
.team-hero h2 {
  font-family: var(--f-brush); font-size: clamp(36px, 5vw, 48px);
  color: var(--amber); margin-bottom: 14px; font-weight: 400;
  letter-spacing: 4px;
  position: relative; display: inline-block;
}
.team-hero h2::before, .team-hero h2::after {
  content: ''; position: absolute; top: 50%; width: 60px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--amber-deep));
}
.team-hero h2::before { right: 100%; margin-right: 20px; background: linear-gradient(90deg, transparent, var(--amber-deep)); }
.team-hero h2::after { left: 100%; margin-left: 20px; background: linear-gradient(90deg, var(--amber-deep), transparent); }
.team-hero p {
  color: var(--cream-2); font-size: 15px; line-height: 1.85;
  max-width: 560px; margin: 0 auto; font-family: var(--f-body);
}
.team-list {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 18px; margin: 40px 0;
}
.team-member {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 24px 16px 20px; text-align: center;
  transition: var(--t); position: relative; overflow: hidden;
}
.team-member::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--amber), transparent);
  transform: scaleX(0); transition: var(--t);
}
.team-member::after {
  content: ''; position: absolute; top: -30px; right: -30px;
  width: 80px; height: 80px; border-radius: 50%;
  background: radial-gradient(circle, var(--amber-soft-2), transparent 70%);
  opacity: 0; transition: var(--t);
}
.team-member:hover {
  border-color: var(--line-3); transform: translateY(-6px);
  box-shadow: var(--sh-amber);
}
.team-member:hover::before { transform: scaleX(1); }
.team-member:hover::after { opacity: 1; }
.team-avatar-wrap {
  width: 80px; height: 80px; margin: 0 auto 14px;
  border-radius: 50%; padding: 3px;
  background: linear-gradient(135deg, var(--amber), var(--amber-2));
  position: relative;
}
.team-avatar {
  width: 100%; height: 100%; border-radius: 50%;
  border: 2px solid var(--card); object-fit: cover;
  background: var(--ink-3); display: block;
}
.team-member:hover .team-avatar-wrap {
  transform: scale(1.06) rotate(-4deg);
  transition: var(--t);
}
.team-name {
  font-family: var(--f-ui); font-size: 14px; font-weight: 700;
  color: var(--cream); margin-bottom: 4px; letter-spacing: 0.5px;
}
.team-role {
  font-family: var(--f-ui); font-size: 11px; color: var(--amber-3);
  letter-spacing: 1px; text-transform: uppercase;
  padding: 3px 10px; border-radius: 999px;
  background: var(--amber-soft); border: 1px solid var(--line-3);
  display: inline-block;
}

/* ========== FAQ 页面（独立页：侧边导航）========== */
.faq-layout {
  display: grid; grid-template-columns: 220px 1fr; gap: 40px;
  align-items: start;
}
.faq-sidebar {
  position: sticky; top: 100px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 18px;
}
.faq-sidebar h4 {
  font-family: var(--f-ui); font-size: 12px; font-weight: 700;
  color: var(--cream-3); letter-spacing: 2px; text-transform: uppercase;
  padding: 6px 12px 12px; border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}
.faq-sidebar a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 9px;
  font-family: var(--f-ui); font-size: 13.5px; color: var(--cream-2);
  transition: var(--t-fast); position: relative;
}
.faq-sidebar a::before {
  content: ''; width: 4px; height: 4px; border-radius: 50%;
  background: var(--cream-4); transition: var(--t);
}
.faq-sidebar a:hover, .faq-sidebar a.active {
  color: var(--amber-3); background: var(--amber-soft);
}
.faq-sidebar a.active::before { background: var(--amber); box-shadow: 0 0 8px var(--amber); }
.faq-content { max-width: none; }
.faq-content h2 {
  font-family: var(--f-display); font-size: 22px; font-weight: 400;
  letter-spacing: 2px; margin: 36px 0 18px; color: var(--cream);
  padding-left: 14px; border-left: 3px solid var(--amber);
  scroll-margin-top: 90px;
}
.faq-content h2:first-child { margin-top: 0; }
.faq-content h3 {
  font-family: var(--f-body); font-size: 15.5px; font-weight: 600;
  margin: 22px 0 8px; color: var(--cream);
  display: flex; align-items: flex-start; gap: 10px;
  line-height: 1.6;
}
.faq-content h3::before {
  content: 'Q'; flex-shrink: 0;
  width: 22px; height: 22px; border-radius: 6px;
  background: var(--amber-soft); border: 1px solid var(--line-3);
  color: var(--amber-3); font-size: 11px; font-weight: 800;
  font-family: var(--f-ui); display: flex; align-items: center; justify-content: center;
  margin-top: 1px;
}
.faq-content p {
  font-size: 14.5px; color: var(--cream-2); line-height: 1.85;
  margin-bottom: 14px; font-family: var(--f-body);
  padding-left: 32px;
}
.faq-content a { color: var(--amber-3); border-bottom: 1px dashed var(--line-3); }
.faq-content a:hover { color: var(--amber); }

/* ========== 404 页面（v5b 重做：爪印主视觉 + 流星）========== */
.nf {
  min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 120px 20px 60px; position: relative; overflow: hidden; text-align: center;
}
.nf::before, .nf::after {
  content: ''; position: absolute; border-radius: 50%; pointer-events: none; z-index: 0;
}
.nf::before {
  top: 12%; left: 8%; width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(250, 159, 88, 0.09), transparent 62%);
  filter: blur(36px); animation: drift 16s ease-in-out infinite;
}
.nf::after {
  bottom: 8%; right: 6%; width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(181, 227, 255, 0.07), transparent 60%);
  filter: blur(46px); animation: drift 20s ease-in-out infinite reverse;
}

/* 流星 */
.nf-shooting {
  position: absolute; top: 18%; left: -10%; width: 120px; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(181, 227, 255, 0.9), transparent);
  border-radius: 2px; filter: blur(0.4px); pointer-events: none; z-index: 0;
  animation: shoot 9s ease-in 2s infinite;
}
.nf-shooting-2 { top: 28%; width: 90px; animation-duration: 13s; animation-delay: 5s; opacity: .7; }
@keyframes shoot {
  0% { transform: translateX(0) translateY(0) rotate(18deg); opacity: 0; }
  3% { opacity: 1; }
  18% { transform: translateX(120vw) translateY(40vh) rotate(18deg); opacity: 0; }
  100% { transform: translateX(120vw) translateY(40vh); opacity: 0; }
}

/* 装饰爪印 */
.nf-paw {
  position: absolute; width: 36px; height: 40px; fill: var(--amber);
  opacity: 0.22; pointer-events: none; z-index: 0;
  filter: drop-shadow(0 0 8px rgba(250, 159, 88, 0.3));
}
.nf-paw-1 { top: 14%; left: 12%; transform: rotate(-25deg); animation: float 7s ease-in-out infinite; }
.nf-paw-2 { top: 22%; right: 14%; width: 28px; height: 32px; transform: rotate(40deg); animation: float 9s ease-in-out infinite 1.2s; }
.nf-paw-3 { bottom: 18%; left: 16%; width: 24px; height: 28px; transform: rotate(15deg); animation: float 6.5s ease-in-out infinite 0.6s; }

/* 主舞台 */
.nf-stage { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; }

/* logo 轨道环 */
.nf-orbit {
  position: relative; width: 120px; height: 120px; margin-bottom: 20px;
  display: flex; align-items: center; justify-content: center;
}
.nf-orbit-ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1px solid rgba(250, 159, 88, 0.28);
  animation: spin 16s linear infinite;
}
.nf-orbit-ring::before {
  content: ''; position: absolute; top: -3px; left: 50%; transform: translateX(-50%);
  width: 6px; height: 6px; border-radius: 50%; background: var(--amber);
  box-shadow: 0 0 10px var(--amber);
}
.nf-orbit-ring-2 {
  inset: -14px; border: 1px dashed rgba(181, 227, 255, 0.22);
  animation: spin 22s linear infinite reverse;
}
.nf-orbit-ring-2::before { background: var(--star); box-shadow: 0 0 8px var(--star); }
.nf-logo {
  width: 76px; height: 76px; border-radius: 22px; position: relative; z-index: 1;
  filter: drop-shadow(0 0 22px rgba(250, 159, 88, 0.35));
  animation: float 5.5s ease-in-out infinite;
}

/* 404 数字:中间用爪印代替 0 */
.nf-num {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin-bottom: 22px;
}
.nf-digit {
  font-family: var(--f-display); font-size: clamp(88px, 13vw, 132px); line-height: 1;
  color: var(--amber); font-weight: 400; letter-spacing: 2px;
  text-shadow: 0 0 40px rgba(250, 159, 88, 0.4), 0 0 90px rgba(250, 159, 88, 0.18);
  animation: digit-in 0.9s cubic-bezier(.2,.8,.2,1) both;
}
.nf-digit:nth-child(3) { animation-delay: 0.15s; }
.nf-digit-paw {
  width: clamp(74px, 11vw, 116px); height: clamp(83px, 12.4vw, 131px);
  display: inline-flex; align-items: center; justify-content: center;
  animation: paw-in 1.1s cubic-bezier(.2,.9,.3,1.2) 0.3s both;
}
.nf-digit-paw svg {
  width: 100%; height: 100%;
  filter: drop-shadow(0 0 22px rgba(250, 159, 88, 0.55));
  animation: paw-wiggle 4s ease-in-out 1.5s infinite;
}
@keyframes digit-in {
  0% { opacity: 0; transform: translateY(20px) scale(0.85); filter: blur(8px); }
  100% { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}
@keyframes paw-in {
  0% { opacity: 0; transform: scale(0.4) rotate(-30deg); }
  60% { transform: scale(1.15) rotate(8deg); }
  100% { opacity: 1; transform: scale(1) rotate(-8deg); }
}
@keyframes paw-wiggle {
  0%, 100% { transform: rotate(-8deg); }
  50% { transform: rotate(6deg); }
}

/* 标题与描述 */
.nf-title {
  font-family: var(--f-display); font-size: clamp(22px, 3vw, 30px);
  color: var(--cream); margin-bottom: 14px; font-weight: 400; letter-spacing: 3px;
  animation: rise 0.9s cubic-bezier(.2,.8,.2,1) 0.5s both;
}
.nf-desc {
  color: var(--cream-2); line-height: 1.85; font-size: 15px; font-family: var(--f-body);
  max-width: 440px; margin: 0 0 36px;
  animation: rise 0.9s cubic-bezier(.2,.8,.2,1) 0.7s both;
}
@keyframes rise {
  0% { opacity: 0; transform: translateY(14px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* 按钮组 */
.nf-actions {
  display: flex; gap: 14px; flex-wrap: wrap; justify-content: center;
  animation: rise 0.9s cubic-bezier(.2,.8,.2,1) 0.9s both;
}
.nf-actions .btn-primary, .nf-actions .btn-ghost { min-width: 160px; }

/* 底部足迹 */
.nf-trail {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 18px; opacity: 0.32; pointer-events: none; z-index: 0;
}
.nf-trail-paw {
  width: 22px; height: 26px; fill: var(--cream-2);
  animation: trail-step 5s ease-in-out infinite;
}
.nf-trail-paw:nth-child(1) { animation-delay: 0s; transform: rotate(-15deg); }
.nf-trail-paw:nth-child(2) { animation-delay: 0.6s; transform: rotate(8deg); }
.nf-trail-paw:nth-child(3) { animation-delay: 1.2s; transform: rotate(-10deg); }
.nf-trail-paw:nth-child(4) { animation-delay: 1.8s; transform: rotate(12deg); }
@keyframes trail-step {
  0%, 100% { opacity: 0.25; transform: scale(1) rotate(var(--r, 0deg)); }
  50% { opacity: 0.55; transform: scale(1.08); }
}

/* ========== 站点地图 ========== */
.sitemap-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px; margin-top: 20px;
}
.sitemap-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 24px;
  transition: var(--t);
}
.sitemap-card:hover { border-color: var(--line-2); transform: translateY(-3px); box-shadow: var(--sh); }
.sitemap-card h3 {
  font-family: var(--f-display); font-size: 17px; font-weight: 400;
  letter-spacing: 1.5px; margin-bottom: 14px; color: var(--amber-3);
  padding-bottom: 10px; border-bottom: 1px solid var(--line);
}
.sitemap-card ul { list-style: none; padding: 0; }
.sitemap-card li { margin-bottom: 8px; }
.sitemap-card a {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--f-ui); font-size: 14px; color: var(--cream-2);
  padding: 6px 10px; border-radius: 7px;
  transition: var(--t-fast);
}
.sitemap-card a:hover { color: var(--amber-3); background: var(--amber-soft); transform: translateX(4px); }
.sitemap-card a::before {
  content: '→'; color: var(--cream-4); font-size: 12px;
  transition: var(--t);
}
.sitemap-card a:hover::before { color: var(--amber); }

/* ========== SDK 页面 ========== */
.sdk-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 24px 26px; margin-bottom: 16px;
  transition: var(--t);
}
.sdk-card:hover { border-color: var(--line-2); box-shadow: var(--sh); }
.sdk-card h3 {
  font-family: var(--f-display); font-size: 18px; font-weight: 400;
  letter-spacing: 1.5px; margin-bottom: 10px; color: var(--cream);
  display: flex; align-items: center; gap: 10px;
}
.sdk-card h3::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--star);
}
.sdk-card p { font-size: 14.5px; color: var(--cream-2); line-height: 1.85; margin-bottom: 8px; }
.sdk-card .sdk-meta {
  display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px;
}
.sdk-card .sdk-tag {
  font-family: var(--f-ui); font-size: 11.5px; color: var(--star-2);
  padding: 4px 10px; border-radius: 999px;
  background: var(--star-soft); border: 1px solid var(--line-star);
  letter-spacing: 0.5px;
}

/* ========== Scroll Reveal ========== */
.reveal {
  opacity: 0; transform: translateY(32px);
  transition: opacity 0.8s var(--d, 0s) cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s var(--d, 0s) cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ========== Responsive · 平板 ========== */
@media (max-width: 960px) {
  .container { padding: 0 28px; }
  .menu-toggle { display: flex; }
  nav {
    position: fixed; top: 68px; left: 0; right: 0; bottom: 0;
    background: rgba(10, 19, 34, 0.98);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    flex-direction: column; align-items: stretch; padding: 24px 28px; gap: 4px;
    transform: translateX(100%); opacity: 0; transition: var(--t);
    overflow-y: auto;
  }
  nav.open { transform: translateX(0); opacity: 1; }
  .nav-link { font-size: 16px; padding: 14px 16px; }
  .nav-cta { margin: 12px 0 0; text-align: center; justify-content: center; padding: 14px; font-size: 15px; }
  .hero { padding: 100px 0 70px; min-height: auto; }
  .hero-inner { grid-template-columns: 1fr; text-align: center; gap: 36px; }
  .hero-left { max-width: none; }
  .hero-badge, .free-pill { justify-content: center; }
  .hero-actions, .hero-stats { justify-content: center; }
  .hero-right { order: -1; }
  .logo-stage { width: 220px; height: 220px; }
  .hero-logo { width: 170px; height: 170px; }
  .logo-ring-1 { width: 210px; height: 210px; }
  .logo-ring-2 { width: 175px; height: 175px; }
  .scroll-hint { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .about-card-lg { grid-row: auto; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .cta-box { grid-template-columns: 1fr; text-align: center; padding: 40px 28px; gap: 28px; }
  .cta-visual { order: -1; }
  .cta-visual img { width: 160px; height: 160px; }
  .cta-tags { justify-content: center; }
  .vibe-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: auto; }
  .vibe-card-lg, .vibe-card-md, .vibe-card-sm { grid-column: span 2; grid-row: auto; }
  .flow-grid { flex-direction: column; align-items: stretch; gap: 14px; }
  .flow-arrow { transform: rotate(90deg); padding: 4px 0; }
  .flow-item { width: 100%; max-width: none; }
  .faq-grid { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 32px; }
  .footer-links { gap: 36px; flex-wrap: wrap; }
  .legal-content { max-width: none; }
  /* FAQ 独立页：侧边栏变水平导航 */
  .faq-layout { grid-template-columns: 1fr; gap: 24px; }
  .faq-sidebar { position: static; display: flex; flex-wrap: wrap; gap: 6px; padding: 14px; }
  .faq-sidebar h4 { width: 100%; padding: 0 8px 8px; margin-bottom: 0; }
  .faq-sidebar a { padding: 8px 14px; font-size: 13px; }
  .team-list { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 14px; }
  .team-member { padding: 18px 12px 16px; }
  .team-avatar-wrap { width: 64px; height: 64px; }
  .sitemap-grid { grid-template-columns: 1fr 1fr; }
}

/* ========== Responsive · 手机 ========== */
@media (max-width: 640px) {
  .container { padding: 0 20px; }
  header { height: 60px; }
  .brand img { width: 32px; height: 32px; }
  .brand-name { font-size: 19px; letter-spacing: 2px; }
  .menu-toggle { width: 38px; height: 38px; }
  nav { top: 60px; padding: 20px; }
  .nav-link { font-size: 15px; padding: 13px 14px; }
  .nav-cta { padding: 13px; font-size: 14px; }
  .hero { padding: 90px 0 60px; }
  .hero-badge { font-size: 12px; padding: 6px 14px; margin-bottom: 22px; }
  .hero-title { font-size: 34px; letter-spacing: 2px; margin-bottom: 20px; line-height: 1.2; }
  .hero-title em { font-size: 0.92em; }
  .hero-lead { font-size: 14.5px; line-height: 1.85; margin-bottom: 18px; }
  .free-pill { padding: 8px 14px; gap: 8px; margin-bottom: 26px; }
  .free-pill .free-icon { width: 20px; height: 20px; font-size: 12px; }
  .free-pill .free-text { font-size: 17px; }
  .free-pill .free-sub { display: none; }
  .hero-actions { flex-direction: column; gap: 10px; margin-bottom: 32px; width: 100%; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; padding: 13px 24px; font-size: 14.5px; }
  .btn-primary.lg { padding: 14px 28px; font-size: 15px; }
  .hero-stats { gap: 22px; margin-bottom: 0; }
  .stat b { font-size: 16px; }
  .stat span { font-size: 11px; }
  .logo-stage { width: 180px; height: 180px; }
  .hero-logo { width: 140px; height: 140px; }
  .logo-ring-1 { width: 175px; height: 175px; }
  .logo-ring-2 { width: 145px; height: 145px; }
  .logo-halo { width: 130px; height: 130px; }
  .section { padding: 70px 0; }
  .section-head { margin-bottom: 40px; }
  .section-title { font-size: 26px; letter-spacing: 2px; margin-bottom: 10px; }
  .section-desc { font-size: 14.5px; }
  .kicker { font-size: 11px; padding: 5px 12px; letter-spacing: 3px; }
  .about-card { padding: 24px 20px; }
  .about-card h3 { font-size: 18px; }
  .about-card p { font-size: 14px; line-height: 1.85; }
  .about-mark { font-size: 24px; }
  .features-grid { grid-template-columns: 1fr; gap: 14px; }
  .feature-card { padding: 26px 22px; }
  .feature-card h3 { font-size: 18px; }
  .feature-card p { font-size: 13.5px; }
  .feature-num { font-size: 34px; top: 18px; right: 20px; }
  .feature-icon { width: 42px; height: 42px; }
  .cta-box { padding: 32px 22px; border-radius: var(--r-lg); }
  .cta-content h2 { font-size: 26px; letter-spacing: 2px; line-height: 1.3; }
  .cta-content p { font-size: 14px; line-height: 1.85; margin-bottom: 20px; }
  .cta-visual img { width: 140px; height: 140px; }
  .cta-tags span { font-size: 11.5px; padding: 6px 12px; }
  .vibe-grid { grid-template-columns: 1fr; gap: 14px; }
  .vibe-card-lg, .vibe-card-md, .vibe-card-sm { grid-column: span 1; }
  .vibe-card { padding: 22px 20px; }
  .vibe-card-lg h3 { font-size: 21px; }
  .vibe-card h3 { font-size: 17px; }
  .vibe-card p { font-size: 13.5px; }
  .vibe-card-lg p { font-size: 14px; }
  .vibe-quote { font-size: 19px; }
  .flow-item { padding: 24px 20px; }
  .flow-item h3 { font-size: 19px; }
  .flow-item p { font-size: 13.5px; }
  .flow-step { font-size: 11px; padding: 4px 10px; }
  .faq-item { border-radius: 12px; }
  .faq-q { padding: 16px 18px; font-size: 14px; line-height: 1.5; }
  .faq-a p { padding: 0 18px 18px; font-size: 13.5px; line-height: 1.8; }
  footer { padding: 50px 0 24px; }
  .footer-top { gap: 28px; margin-bottom: 32px; }
  .footer-brand img { width: 38px; height: 38px; }
  .footer-brand h3 { font-size: 18px; }
  .footer-brand p { font-size: 11.5px; }
  .footer-links { gap: 28px; flex-wrap: wrap; }
  .footer-col h4 { font-size: 12px; }
  .footer-col a { font-size: 13px; }
  .footer-bottom { font-size: 11.5px; padding-top: 20px; }
  /* legal */
  .legal-page { padding: 100px 0 60px; }
  .legal-back { font-size: 13px; padding: 7px 12px; margin-bottom: 24px; }
  .legal-header { margin-bottom: 32px; padding-bottom: 24px; }
  .legal-header h1 { font-size: 30px; letter-spacing: 3px; margin-bottom: 10px; }
  .legal-meta { font-size: 12px; gap: 12px; }
  .legal-content h2 { font-size: 20px; letter-spacing: 1.5px; margin: 30px 0 14px; padding-left: 12px; }
  .legal-content h3 { font-size: 16px; margin: 22px 0 10px; }
  .legal-content > h4 { font-size: 14px; margin: 18px 0 8px; }
  .legal-content p, .legal-content li { font-size: 14.5px; line-height: 1.9; }
  .legal-content li > strong:only-child { font-size: 13px; }
  .legal-callout { padding: 20px; margin: 24px 0; }
  .legal-callout h4 { font-size: 16px; }
  .legal-callout p { font-size: 14px; }
  /* team */
  .team-hero { padding: 20px 0 36px; }
  .team-hero h2 { font-size: 32px; letter-spacing: 3px; }
  .team-hero h2::before, .team-hero h2::after { width: 40px; }
  .team-hero p { font-size: 14px; }
  .team-list { grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 30px 0; }
  .team-member { padding: 16px 8px 14px; border-radius: 14px; }
  .team-avatar-wrap { width: 56px; height: 56px; margin-bottom: 10px; }
  .team-name { font-size: 12px; }
  .team-role { font-size: 10px; padding: 2px 8px; }
  /* FAQ 独立页 */
  .faq-sidebar { padding: 12px; gap: 4px; }
  .faq-sidebar a { padding: 7px 12px; font-size: 12.5px; }
  .faq-content h2 { font-size: 19px; margin: 28px 0 14px; }
  .faq-content h3 { font-size: 14.5px; }
  .faq-content p { font-size: 13.5px; padding-left: 28px; }
  .faq-content h3::before { width: 20px; height: 20px; font-size: 10px; }
  /* 404 */
  .nf { padding: 110px 16px 50px; }
  .nf-orbit { width: 100px; height: 100px; margin-bottom: 16px; }
  .nf-logo { width: 62px; height: 62px; border-radius: 18px; }
  .nf-orbit-ring-2 { inset: -10px; }
  .nf-digit { font-size: 76px; }
  .nf-digit-paw { width: 64px; height: 72px; }
  .nf-title { font-size: 21px; letter-spacing: 2px; }
  .nf-desc { font-size: 14px; }
  .nf-paw-1 { width: 28px; height: 32px; }
  .nf-paw-2 { width: 22px; height: 26px; }
  .nf-paw-3 { width: 20px; height: 24px; }
  .nf-trail { gap: 12px; bottom: 22px; }
  .nf-trail-paw { width: 18px; height: 22px; }
  .nf-actions .btn-primary, .nf-actions .btn-ghost { min-width: 140px; padding: 12px 22px; font-size: 14px; }
  /* sitemap */
  .sitemap-grid { grid-template-columns: 1fr; gap: 16px; }
  .sitemap-card { padding: 20px; }
}

/* ========== Responsive · 小屏手机 ========== */
@media (max-width: 380px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 28px; letter-spacing: 1px; }
  .hero-lead { font-size: 14px; }
  .free-pill .free-text { font-size: 16px; }
  .section-title { font-size: 23px; letter-spacing: 1.5px; }
  .hero-stats { gap: 16px; }
  .stat b { font-size: 15px; }
  .stat span { font-size: 10.5px; }
  .team-list { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .cta-content h2 { font-size: 22px; }
  .nf-digit { font-size: 60px; }
  .nf-digit-paw { width: 50px; height: 56px; }
  .nf-title { font-size: 18px; }
  .nf-desc { font-size: 13px; }
  .nf-orbit { width: 86px; height: 86px; margin-bottom: 12px; }
  .nf-logo { width: 54px; height: 54px; border-radius: 16px; }
  .nf-actions { flex-direction: column; width: 100%; max-width: 280px; }
  .nf-actions .btn-primary, .nf-actions .btn-ghost { width: 100%; }
  .legal-header h1 { font-size: 26px; letter-spacing: 2px; }
  .legal-content h2 { font-size: 18px; }
  .legal-content p, .legal-content li { font-size: 14px; }
}

/* ========== 触控优化 ========== */
@media (hover: none) and (pointer: coarse) {
  .feature-card:hover,
  .vibe-card:hover,
  .flow-item:hover,
  .team-member:hover,
  .about-card:hover,
  .faq-item:hover,
  .legal-callout:hover {
    transform: none !important;
    box-shadow: var(--sh) !important;
  }
  .feature-card:hover .feature-icon,
  .team-member:hover .team-avatar-wrap {
    transform: none !important;
  }
  .btn-primary:hover, .btn-ghost:hover {
    transform: none !important;
  }
  .nav-link:hover, .nav-link.active {
    background: var(--amber-soft);
  }
}

/* ========== 减少动效 ========== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .hero-title .t-line, .hero-lead, .free-pill, .hero-actions, .hero-stats, .scroll-hint {
    opacity: 1 !important; transform: none !important; animation: none !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
  .nf-digit, .nf-digit-paw, .nf-title, .nf-desc, .nf-actions,
  .nf-shooting, .nf-paw, .nf-trail-paw, .nf-orbit-ring, .nf-logo {
    opacity: 1 !important; transform: none !important; animation: none !important;
  }
}

/* ========== 滚动进度条 ========== */
.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 2px;
  background: transparent; z-index: 9999; pointer-events: none;
}
.scroll-progress-bar {
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--amber), var(--gold), var(--star));
  box-shadow: 0 0 8px rgba(250, 159, 88, 0.5);
  transition: width 0.1s linear;
}

/* ========== 按钮涟漪 ========== */
.ripple {
  position: absolute; border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: scale(0); animation: rippleEffect 0.6s ease-out;
  pointer-events: none;
}
@keyframes rippleEffect {
  to { transform: scale(2.5); opacity: 0; }
}

/* ========== 按钮微光扫过 ========== */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary::after {
  content: ''; position: absolute; top: 0; left: -120%;
  width: 80%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transform: skewX(-20deg); transition: left 0.6s ease;
}
.btn-primary:hover::after { left: 120%; }

/* ========== 卡片光斑跟随 ========== */
.feature-card, .vibe-card {
  cursor: pointer;
}

/* ========== 文字渐入 ========== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== 加载占位 ========== */
.loading-dot {
  display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; background: var(--amber);
  animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(0.8); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
}