/* ============================================================
   观鲲 Kunlens 官网 v3 — 专业深色科技风
   字体：Space Grotesk（英文/数字）+ Noto Sans SC（中文）
   ============================================================ */
:root {
  --bg: #070B10;
  --bg-soft: #0B1118;
  --bg-card: #0E1620;
  --bg-card-2: #101B27;
  --border: rgba(148, 190, 210, 0.12);
  --border-strong: rgba(148, 190, 210, 0.2);
  --text: #E8EFF4;
  --text-dim: #93A6B4;
  --text-faint: #5E7284;
  --accent: #1FD6A4;
  --accent-soft: rgba(31, 214, 164, 0.12);
  --accent-line: rgba(31, 214, 164, 0.3);
  --blue: #4D8DFF;
  /* 兼容别名：子页面（business/training 等）使用的历史变量名 */
  --panel: #0E1620;
  --green: #1FD6A4;
  --muted: #93A6B4;
  --font-display: 'Space Grotesk', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --radius: 14px;
  --shadow-card: 0 18px 50px rgba(0, 0, 0, 0.45);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
::selection { background: rgba(31, 214, 164, 0.28); }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }

/* 全局动态背景：细网格 + 缓动光斑 */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -2;
  background-image:
    linear-gradient(rgba(120, 170, 200, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 200, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 40%, transparent 100%);
}
body::after {
  content: '';
  position: fixed; inset: 0; z-index: -3;
  background:
    radial-gradient(600px 420px at 12% -5%, rgba(31, 214, 164, 0.09), transparent 70%),
    radial-gradient(700px 500px at 88% 10%, rgba(77, 141, 255, 0.08), transparent 70%),
    radial-gradient(800px 600px at 50% 110%, rgba(31, 214, 164, 0.05), transparent 70%);
  animation: bgShift 26s ease-in-out infinite alternate;
}
@keyframes bgShift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(0, -3%, 0) scale(1.06); }
}

/* ===== 顶部通知条 ===== */
.topbar {
  background: linear-gradient(90deg, rgba(31, 214, 164, 0.16), rgba(77, 141, 255, 0.14));
  border-bottom: 1px solid var(--accent-line);
  font-size: 13px;
  position: relative; z-index: 60;
}
.topbar-inner {
  display: flex; align-items: center; gap: 16px;
  padding: 9px 0;
}
.topbar-text { flex: 1; color: #C9EFE2; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-link { color: var(--accent); font-weight: 600; white-space: nowrap; }
.topbar-link .arrow { transition: transform 0.2s; display: inline-block; }
.topbar-link:hover .arrow { transform: translateX(3px); }
.topbar-close { background: none; border: 0; color: var(--text-dim); font-size: 14px; padding: 2px 6px; }
.topbar-close:hover { color: var(--text); }

/* ===== 导航 ===== */
.topnav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 11, 16, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.topnav.scrolled { border-bottom-color: var(--border); }
.topnav-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #19B98D);
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 18px rgba(31, 214, 164, 0.35);
}
.brand-name { font-family: var(--font-display); font-size: 17px; font-weight: 700; letter-spacing: 0.2px; }
.brand-name em { font-style: normal; color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.nav-links a {
  font-size: 14px; color: var(--text-dim); font-weight: 500;
  transition: color 0.2s; position: relative;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:not(.btn-nav)::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: -6px;
  height: 2px; background: var(--accent); transition: right 0.25s; border-radius: 2px;
}
.nav-links a:not(.btn-nav):hover::after { right: 0; }
.nav-links .btn-nav {
  color: #06251B; background: var(--accent);
  padding: 9px 18px; border-radius: 10px; font-weight: 700;
  box-shadow: 0 4px 16px rgba(31, 214, 164, 0.3);
}
.nav-links .btn-nav:hover { background: #2AE8B5; }
/* ===== 开放合作下拉菜单 ===== */
.nav-links .dropdown { position: relative; }
.nav-links .dropdown-trigger { cursor: pointer; }
.nav-links .dropdown-menu {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%) translateY(-8px);
  min-width: 220px; background: var(--bg-card, #141a21);
  border: 1px solid var(--border, #2a3441); border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5); padding: 12px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  z-index: 100;
}
.nav-links .dropdown:hover .dropdown-menu,
.nav-links .dropdown.open .dropdown-menu {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0);
}
.nav-links .dropdown-menu .dd-group { padding: 8px 4px; border-bottom: 1px solid var(--border, #2a3441); }
.nav-links .dropdown-menu .dd-group:last-of-type { border-bottom: 0; }
.nav-links .dropdown-menu .dd-title {
  display: block; font-size: 11px; font-weight: 700; color: var(--accent, #1FD6A4);
  letter-spacing: 0.08em; padding: 4px 10px 8px; text-transform: uppercase;
}
.nav-links .dropdown-menu a {
  display: block; padding: 8px 10px; border-radius: 8px;
  font-size: 13px; color: var(--text, #e6e6e6); font-weight: 500;
  transition: background 0.15s, color 0.15s;
}
.nav-links .dropdown-menu a:hover { background: rgba(31,214,164,0.12); color: var(--accent, #1FD6A4); }
.nav-links .dropdown-menu a::after { display: none !important; }
.nav-links .dropdown-menu .dd-foot { padding: 8px 4px 0; }
.nav-links .dropdown-menu .dd-foot a { color: var(--accent, #1FD6A4); font-weight: 700; }
.nav-burger { display: none; background: none; border: 0; margin-left: auto; padding: 8px; }
.nav-burger span { display: block; width: 20px; height: 2px; background: var(--text); margin: 5px 0; border-radius: 2px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 600; border-radius: 12px; border: 0;
  transition: transform 0.18s, box-shadow 0.18s, background 0.18s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, #1FD6A4, #14B98C);
  color: #06251B; padding: 13px 26px; font-size: 15px;
  box-shadow: 0 8px 26px rgba(31, 214, 164, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(31, 214, 164, 0.45); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.04); color: var(--text);
  border: 1px solid var(--border-strong); padding: 13px 26px; font-size: 15px;
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: var(--accent-line); }
.btn-lg { padding: 15px 30px; font-size: 16px; border-radius: 13px; }

/* ===== Hero ===== */
.hero { position: relative; padding: 96px 0 0; overflow: hidden; isolation: isolate; }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; opacity: 0.95; pointer-events: none; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(90px); z-index: 0; pointer-events: none; }
.hero-glow-a { width: 520px; height: 520px; left: -140px; top: -120px; background: rgba(31, 214, 164, 0.13); animation: glowFloat 14s ease-in-out infinite alternate; }
.hero-glow-b { width: 560px; height: 560px; right: -160px; top: 40px; background: rgba(77, 141, 255, 0.11); animation: glowFloat 18s ease-in-out infinite alternate-reverse; }
@keyframes glowFloat {
  0%   { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(40px, 30px, 0); }
}
.hero-inner { position: relative; z-index: 2; text-align: center; max-width: 880px; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-display); font-size: 13px; letter-spacing: 2.5px;
  color: var(--accent); border: 1px solid var(--accent-line);
  background: var(--accent-soft); border-radius: 100px; padding: 7px 18px;
  text-transform: uppercase; font-weight: 600;
}
.kicker-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); animation: pulse 2.2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 58px);
  font-weight: 700; line-height: 1.18; letter-spacing: -0.5px;
  margin: 26px 0 20px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(100deg, var(--accent) 10%, #6FE8FF 55%, var(--blue) 95%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: clamp(15px, 1.7vw, 17px); line-height: 1.75; color: var(--text-dim); max-width: 780px; margin: 0 auto 40px; }
/* Hero 三组文案轮播 */
.hero-title { position: relative; min-height: 2.42em; }
.hero-slide { display: block; opacity: 0; transform: translateY(-8px); transition: opacity .9s cubic-bezier(.22,.61,.36,1), transform .9s cubic-bezier(.22,.61,.36,1); }
.hero-title .hero-slide { position: absolute; inset: 0; pointer-events: none; }
.hero-title .hero-slide.on { position: relative; opacity: 1; transform: none; pointer-events: auto; }
.hero-sub { position: relative; min-height: 3.6em; }
.hero-sub .hero-slide { position: absolute; inset: 0; pointer-events: none; }
.hero-sub .hero-slide.on { position: relative; opacity: 1; transform: none; pointer-events: auto; }
@media (prefers-reduced-motion: reduce) { .hero-slide { transition: none; transform: none; } }
.hero-cta { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

.hero-metrics {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  margin: 56px auto 0; max-width: 780px;
}
.metric {
  background: rgba(14, 22, 32, 0.72); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 14px 18px;
  backdrop-filter: blur(8px);
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.metric:hover { transform: translateY(-4px); border-color: var(--accent-line); box-shadow: 0 14px 34px rgba(0, 0, 0, 0.4); }
.metric b {
  display: block; font-family: var(--font-display);
  font-size: 40px; font-weight: 700; line-height: 1.1;
  background: linear-gradient(120deg, var(--accent), #6FE8FF);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.metric span { font-size: 12.5px; color: var(--text-dim); line-height: 1.5; display: block; margin-top: 8px; }
.hero-note {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin: 30px 0 0; color: var(--text-faint); font-size: 13px;
}

/* 平台滚动墙 */
.hero-marquee {
  position: relative; z-index: 2;
  margin-top: 64px; padding: 22px 0 26px;
  border-top: 1px solid var(--border);
  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);
}
.marquee-track { display: flex; gap: 52px; width: max-content; animation: marquee 36s linear infinite; }
.hero-marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.marquee-item {
  font-family: var(--font-display); font-size: 15px; font-weight: 600;
  color: var(--text-faint); white-space: nowrap; transition: color 0.25s;
  display: flex; align-items: center; gap: 10px;
}
.marquee-item:hover { color: var(--accent); }
.marquee-item i { width: 5px; height: 5px; border-radius: 50%; background: var(--accent-line); }

/* ===== 开放社区 ===== */
.community { overflow: hidden; }
.community::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(120, 170, 200, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 200, 0.05) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse 72% 85% at 50% 45%, #000 25%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 72% 85% at 50% 45%, #000 25%, transparent 100%);
}
.community::after {
  content: ''; position: absolute; width: 480px; height: 480px; border-radius: 50%;
  top: 6%; right: -140px; pointer-events: none;
  background: rgba(31, 214, 164, 0.1); filter: blur(90px);
  animation: commGlowA 13s ease-in-out infinite alternate;
}
.community-orb {
  position: absolute; width: 420px; height: 420px; border-radius: 50%;
  bottom: -8%; left: -130px; pointer-events: none;
  background: rgba(77, 141, 255, 0.09); filter: blur(90px);
  animation: commGlowB 17s ease-in-out infinite alternate;
}
@keyframes commGlowA {
  0%   { transform: translate3d(0, 0, 0) scale(1); opacity: 0.8; }
  100% { transform: translate3d(-70px, 60px, 0) scale(1.18); opacity: 1; }
}
@keyframes commGlowB {
  0%   { transform: translate3d(0, 0, 0) scale(1); opacity: 0.7; }
  100% { transform: translate3d(60px, -50px, 0) scale(1.15); opacity: 1; }
}
.community .container { position: relative; z-index: 1; }

.section { padding: 110px 0; position: relative; }
.section-kicker {
  font-family: var(--font-display); font-size: 12px; font-weight: 600;
  letter-spacing: 3px; color: var(--accent); text-transform: uppercase;
  margin-bottom: 14px; text-align: center;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px); font-weight: 700;
  text-align: center; letter-spacing: -0.4px; line-height: 1.25;
}
.section-sub { text-align: center; color: var(--text-dim); font-size: 16px; max-width: 640px; margin: 18px auto 0; }

/* ===== 工作流 ===== */
.pipeline { background: linear-gradient(180deg, transparent, rgba(14, 22, 32, 0.5) 30%, rgba(14, 22, 32, 0.5) 70%, transparent); }
.pipeline-steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
  margin-top: 64px; counter-reset: step;
}
.pstep {
  position: relative; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px; transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.pstep:hover { transform: translateY(-6px); border-color: var(--accent-line); box-shadow: var(--shadow-card); }
.pstep::before {
  content: ''; position: absolute; left: 26px; top: 74px; right: -22px; height: 1px;
  background: linear-gradient(90deg, var(--accent-line), transparent);
}
.pstep:last-child::before { display: none; }
.pstep-num {
  font-family: var(--font-display); font-size: 15px; font-weight: 700;
  color: var(--accent); background: var(--accent-soft);
  border: 1px solid var(--accent-line); border-radius: 9px;
  display: inline-flex; padding: 5px 12px; margin-bottom: 18px;
}
.pstep h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.pstep p { font-size: 14px; color: var(--text-dim); }

/* ===== 核心能力 ===== */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 64px; }
.cap {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 30px 28px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s, background 0.25s;
  position: relative; overflow: hidden;
}
.cap::after {
  content: ''; position: absolute; inset: 0; opacity: 0; transition: opacity 0.3s;
  background: radial-gradient(420px 220px at 20% 0%, rgba(31, 214, 164, 0.07), transparent 70%);
  pointer-events: none;
}
.cap:hover { transform: translateY(-6px); border-color: var(--accent-line); box-shadow: var(--shadow-card); }
.cap:hover::after { opacity: 1; }
.cap-ico {
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--accent-soft); border: 1px solid var(--accent-line);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; color: var(--accent);
}
.cap-ico svg { width: 22px; height: 22px; }
.cap h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.cap p { font-size: 14px; color: var(--text-dim); }
.cap.is-soon { display: block; cursor: default; }
.cap.is-soon:hover { transform: translateY(-3px); }
.soon-badge {
  display: inline-flex; margin-top: 14px; padding: 3px 12px;
  font-size: 12px; border-radius: 100px;
  color: var(--text-faint); border: 1px solid var(--border-strong);
  background: rgba(255, 255, 255, 0.03);
}
a.cap:not(.is-soon) .soon-badge { display: none; }
a.cap:not(.is-soon) { cursor: pointer; border-color: var(--accent-line); }

/* ===== 覆盖平台 ===== */
.pgroups { display: grid; gap: 34px; margin-top: 56px; }
.pgroup-label {
  font-family: var(--font-display); font-size: 13px; font-weight: 600;
  letter-spacing: 2px; color: var(--text-faint); text-transform: uppercase;
  margin-bottom: 16px; display: flex; align-items: center; gap: 12px;
}
.pgroup-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.pgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.pchip {
  display: flex; align-items: center; gap: 11px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 11px; padding: 10px 14px;
  transition: transform 0.2s, border-color 0.2s, background 0.2s;
}
.pchip:hover { transform: translateY(-2px); border-color: var(--accent-line); background: var(--bg-card-2); }
.pchip-ico {
  width: 32px; height: 32px; flex-shrink: 0; border-radius: 8px;
  background: #fff; display: inline-flex; align-items: center; justify-content: center;
  overflow: hidden; font-size: 14px; font-weight: 700; color: #fff;
}
.pchip-ico img { width: 19px; height: 19px; object-fit: contain; }
.pchip-ico.sm { font-size: 10px; letter-spacing: 0.3px; }
.pchip-name { font-size: 13.5px; font-weight: 600; color: var(--text-dim); transition: color 0.2s; }
.pchip:hover .pchip-name { color: var(--text); }

/* ===== 开放社区 ===== */
.community-grid { display: grid; grid-template-columns: 1fr 300px; gap: 22px; margin-top: 56px; }
.community-cards { display: grid; gap: 18px; }
.ccard {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px 28px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.ccard:hover { transform: translateY(-4px); border-color: var(--accent-line); box-shadow: var(--shadow-card); }
.ccard-ico {
  width: 44px; height: 44px; border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(31, 214, 164, 0.1); border: 1px solid rgba(31, 214, 164, 0.28);
  margin-bottom: 14px;
}
.ccard-ico svg { display: block; }
.ccard h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.ccard p { font-size: 14px; color: var(--text-dim); }
.community-join {
  background: linear-gradient(160deg, var(--bg-card-2), var(--bg-card));
  border: 1px solid var(--accent-line); border-radius: var(--radius);
  padding: 26px 28px; height: fit-content; text-align: center;
}
.community-join h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.community-join > p { font-size: 13.5px; color: var(--text-dim); margin-bottom: 18px; }
.join-qr {
  border: 1px dashed var(--border-strong); border-radius: 12px;
  padding: 26px 14px; color: var(--text-faint); font-size: 13px;
}
.join-qr img { width: 160px; height: 160px; margin: 0 auto 10px; border-radius: 8px; }
.join-qr.qr-missing { display: flex; align-items: center; justify-content: center; min-height: 120px; }

.community-posts { margin-top: 26px; }
.community-posts-head h3 {
  font-size: 18px; font-weight: 700; display: flex; align-items: center; gap: 9px;
  margin-bottom: 16px;
}
.cposts { display: grid; gap: 10px; }
.cpost-loading { color: var(--text-faint); font-size: 14px; text-align: center; padding: 26px 0; }
.cpost {
  display: flex; align-items: baseline; gap: 14px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 11px; padding: 15px 20px;
  cursor: pointer; transition: border-color 0.2s, transform 0.2s, background 0.2s;
}
.cpost:hover { border-color: var(--accent-line); transform: translateX(4px); background: var(--bg-card-2); }
.cpost-title { font-size: 15px; font-weight: 600; flex: 1; }
.cpost-date { font-family: var(--font-display); font-size: 12.5px; color: var(--text-faint); white-space: nowrap; }

/* 文章弹层 */
.post-layer { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; padding: 24px; }
.post-layer[hidden] { display: none; }
.post-mask { position: absolute; inset: 0; background: rgba(4, 8, 12, 0.78); backdrop-filter: blur(6px); }
.post-panel {
  position: relative; width: min(720px, 100%); max-height: 82vh; overflow-y: auto;
  background: var(--bg-soft); border: 1px solid var(--border-strong);
  border-radius: 18px; padding: 40px 42px; box-shadow: 0 30px 90px rgba(0, 0, 0, 0.6);
  animation: panelIn 0.28s cubic-bezier(0.2, 0.9, 0.3, 1.2);
}
@keyframes panelIn { from { opacity: 0; transform: translateY(22px) scale(0.98); } to { opacity: 1; transform: none; } }
.post-close {
  position: absolute; top: 16px; right: 18px; width: 36px; height: 36px;
  border-radius: 10px; border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04); color: var(--text-dim); font-size: 20px; line-height: 1;
}
.post-close:hover { color: var(--text); border-color: var(--accent-line); }
.post-panel h2 { font-family: var(--font-display); font-size: 24px; line-height: 1.35; padding-right: 30px; }
.post-meta { color: var(--text-faint); font-size: 13px; margin: 10px 0 22px; }
.post-body { color: var(--text-dim); font-size: 15px; }
.post-body h3 { color: var(--text); font-size: 17px; margin: 22px 0 8px; }
.post-body p { margin-bottom: 12px; }
.post-body ul { margin: 0 0 12px 20px; list-style: disc; }
.post-body code { background: rgba(31, 214, 164, 0.1); color: var(--accent); border-radius: 5px; padding: 1px 7px; font-size: 13.5px; }

/* ===== 下载 ===== */
.download { padding-bottom: 130px; }
.download-inner {
  text-align: center; background: linear-gradient(160deg, rgba(31, 214, 164, 0.09), rgba(77, 141, 255, 0.06));
  border: 1px solid var(--accent-line); border-radius: 24px;
  padding: 72px 40px;
}
.download-inner .hero-cta { margin-top: 34px; }
.download-note { margin-top: 26px; color: var(--text-faint); font-size: 13.5px; }
.download-tip { margin-top: 10px; color: var(--text-faint); font-size: 12.5px; max-width: 640px; margin-left: auto; margin-right: auto; }

/* ===== 页脚 ===== */
.footer { border-top: 1px solid var(--border); padding: 52px 0 34px; background: rgba(11, 17, 24, 0.6); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand b { font-family: var(--font-display); font-size: 15px; }
.footer-brand p { font-size: 13px; color: var(--text-faint); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 13.5px; color: var(--text-dim); transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }
.footer-beian {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--border);
  font-size: 12.5px; color: var(--text-faint);
}
.footer-beian a { color: var(--text-faint); }
.footer-beian a:hover { color: var(--text-dim); }

/* ===== Reveal 滚动进场 ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 0.84, 0.3, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ===== 法律/日志页兼容（changelog / privacy / agreement） ===== */
.legal-hero { padding: 90px 0 30px; text-align: center; }
.legal-hero h1 { font-family: var(--font-display); font-size: clamp(30px, 4.5vw, 44px); font-weight: 700; }
.legal-date { color: var(--text-faint); font-size: 14px; margin-top: 12px; }
.legal-body {
  max-width: 780px; margin: 30px auto 0; padding-bottom: 100px;
  color: var(--text-dim); font-size: 15px;
}
.legal-body h2 {
  font-family: var(--font-display); color: var(--text); font-size: 20px;
  margin: 38px 0 14px; padding-left: 14px; border-left: 3px solid var(--accent);
}
.legal-body p { margin-bottom: 10px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .pipeline-steps { grid-template-columns: repeat(2, 1fr); }
  .pstep::before { display: none; }
  .community-grid { grid-template-columns: 1fr; }
  /* 平板横屏：收紧导航与留白 */
  .topnav-inner { gap: 18px; }
  .nav-links { gap: 18px; }
  .section { padding: 84px 0; }
  .hero { padding: 72px 0 0; }
  .metric b { font-size: 34px; }
  .metric { padding: 18px 12px 14px; }
  .download-inner { padding: 56px 28px; }
  .container { width: min(1180px, calc(100% - 40px)); }
  /* 触控目标 ≥44px（平板手指操作） */
  .topbar-close { min-width: 44px; min-height: 44px; font-size: 16px; }
  .post-close { width: 44px; height: 44px; top: 12px; right: 14px; }
}
/* iPad 竖屏（768px）：导航折叠为汉堡，指标 4→2 列 */
@media (max-width: 860px) {
  .nav-links {
    position: fixed; inset: 68px 0 auto 0; flex-direction: column; gap: 4px;
    background: rgba(7, 11, 16, 0.97); border-bottom: 1px solid var(--border);
    padding: 18px 24px 22px; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 0; font-size: 15px; }
  .nav-links .btn-nav { margin-top: 10px; text-align: center; }
  .nav-links .dropdown { width: 100%; }
  .nav-links .dropdown-menu {
    position: static; transform: none; opacity: 1; visibility: visible;
    pointer-events: auto; box-shadow: none; border: 0; padding: 6px 0 0; min-width: 0;
    display: none;
  }
  .nav-links .dropdown.open .dropdown-menu { display: block; }
  .nav-burger { display: block; padding: 12px; }
  .hero { padding-top: 64px; }
  .hero-metrics { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}
@media (max-width: 720px) {
  .cap-grid, .pipeline-steps { grid-template-columns: 1fr; }
  .section { padding: 76px 0; }
  .post-panel { padding: 30px 22px; }
  .footer-inner, .footer-beian { flex-direction: column; align-items: flex-start; }
}

/* ===== 动效降级 ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}


/* ===== Hero 扫描框（v15） ===== */
.hero-scan {
  display: flex; align-items: center; gap: 10px;
  max-width: 560px; margin: 26px auto 0;
  padding: 8px 8px 8px 18px;
  background: rgba(13, 20, 28, 0.9);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.hero-scan:focus-within {
  border-color: #1FD6A4;
  box-shadow: 0 0 0 3px rgba(31, 214, 164, 0.15);
}
.hero-scan-ico { flex: none; }
.hero-scan input {
  flex: 1; min-width: 0;
  background: transparent; border: none; outline: none;
  color: var(--text); font-size: 15px; font-family: inherit;
}
.hero-scan input::placeholder { color: var(--muted); }
.hero-scan .btn { padding: 10px 22px; border-radius: 999px; white-space: nowrap; }
@media (max-width: 720px) {
  .hero-scan { flex-direction: row; padding-left: 14px; }
  .hero-scan input { font-size: 14px; }
}

/* ===== Hero 扫描钩子增强（v20） ===== */
.hero-scan-note {
  text-align: center; color: var(--text-dim); font-size: 13px;
  margin: 12px auto 0; letter-spacing: 0.2px;
}
.hero-samples {
  display: flex; gap: 10px; justify-content: center; flex-wrap: wrap;
  margin-top: 16px; align-items: center;
}
.hero-samples span { color: var(--text-faint); font-size: 13px; }
.hero-samples a {
  display: inline-flex; padding: 6px 15px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--text-dim); font-size: 13px;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.hero-samples a:hover { border-color: var(--accent-line); color: var(--accent); background: var(--accent-soft); }

/* ===== 真实报告样例（v20） ===== */
.report { background: linear-gradient(180deg, transparent, rgba(14, 22, 32, 0.5) 35%, rgba(14, 22, 32, 0.5) 65%, transparent); }
.report-shots { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 56px; }
.shot {
  margin: 0; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-card);
}
.shot-bar {
  display: flex; align-items: center; gap: 6px; padding: 11px 16px;
  background: rgba(255, 255, 255, 0.03); border-bottom: 1px solid var(--border);
}
.shot-bar span { width: 10px; height: 10px; border-radius: 50%; background: #33414f; }
.shot-bar em { margin-left: 8px; font-style: normal; font-size: 12px; color: var(--text-faint); font-family: var(--font-display); }
.shot img { display: block; width: 100%; height: auto; }
.report-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 40px; }
.report-more {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; align-items: center;
  margin-top: 54px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 18px; padding: 26px; box-shadow: var(--shadow-card);
}
.report-more img { display: block; width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--border); }
.report-more-txt h3 { font-family: var(--font-display); font-size: 20px; margin-bottom: 10px; }
.report-more-txt p { color: var(--text-dim); font-size: 14px; }

/* ===== AI 答案优化前后对比（v20） ===== */
.aidiff-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 56px; }
.aidiff-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px 26px 24px; position: relative;
}
.aidiff-card.before { border-left: 3px solid #FF5C5C; }
.aidiff-card.after { border-left: 3px solid var(--accent); }
.aidiff-card header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.aidiff-tag {
  font-size: 12px; font-weight: 700; padding: 3px 12px; border-radius: 999px;
  font-family: var(--font-display); letter-spacing: 0.5px;
}
.aidiff-card.before .aidiff-tag { background: rgba(255, 92, 92, 0.14); color: #FF5C5C; }
.aidiff-card.after .aidiff-tag { background: var(--accent-soft); color: var(--accent); }
.aidiff-card header h3 { font-size: 17px; font-weight: 700; }
.chat { display: flex; flex-direction: column; gap: 12px; }
.chat-q {
  align-self: flex-end; max-width: 88%; background: rgba(77, 141, 255, 0.14);
  border: 1px solid rgba(77, 141, 255, 0.3); color: var(--text);
  padding: 10px 15px; border-radius: 14px 14px 4px 14px; font-size: 14px;
}
.chat-a {
  background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border);
  padding: 14px 16px; border-radius: 14px 14px 14px 4px;
  font-size: 14px; color: var(--text-dim); line-height: 1.75;
}
.chat-a b { color: var(--text); }
.chat-a b.hl { color: var(--accent); }
.chat-src { font-size: 12px; color: var(--text-faint); border-left: 2px solid var(--accent-line); padding-left: 10px; }
.chat-note { font-size: 12.5px; color: var(--text-faint); }
.aidiff-card.after .chat-note { color: var(--accent); }
.aidiff-disclaimer { text-align: center; color: var(--text-faint); font-size: 12.5px; margin-top: 26px; }

/* ===== 新增板块响应式（v20） ===== */
@media (max-width: 860px) {
  .report-shots { grid-template-columns: 1fr; }
  .report-more { grid-template-columns: 1fr; gap: 18px; }
  .aidiff-grid { grid-template-columns: 1fr; }
}