/* ============================================================
   AnsClaw 营销站 · 主样式
   Fluent 明亮风格 · 品牌蓝 #0078D4 / 深蓝 #003E92
   ============================================================ */

:root {
  --accent: #0078d4;
  --accent-dark: #003e92;
  --accent-deep: #001a68;
  --accent-soft: #e8f1fb;
  --text: #1b1b1f;
  --text-2: #5c5c64;
  --text-3: #8a8a93;
  --bg: #f7f9fc;
  --bg-gradient: linear-gradient(160deg, #eef4fb 0%, #f7f9fc 45%, #fdfeff 100%);
  --card: rgba(255, 255, 255, 0.72);
  --card-solid: #ffffff;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.12);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 50px rgba(0, 61, 146, 0.14);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --font: "Segoe UI", "Microsoft YaHei UI", "PingFang SC", "Microsoft YaHei", -apple-system, system-ui, sans-serif;
  --maxw: 1120px;
  --nav-h: 64px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  margin-right: auto;
}
.brand img { width: 28px; height: 28px; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  color: var(--text-2);
  font-size: 14.5px;
  padding: 7px 13px;
  border-radius: 8px;
  transition: background 0.15s, color 0.15s;
}
.nav-links a:hover { background: rgba(0, 0, 0, 0.05); color: var(--text); }
.nav-links a.active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.nav-right { display: flex; align-items: center; gap: 12px; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.lang-opt {
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  color: var(--text-2);
  border: none;
  background: transparent;
  padding: 6px 13px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}
.lang-opt:hover { color: var(--text); }
.lang-opt.on {
  background: var(--card-solid);
  color: var(--accent-dark);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.14);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: inherit;
  font-weight: 600;
  font-size: 15px;
  padding: 11px 22px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s, background 0.12s;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 4px 14px rgba(0, 120, 212, 0.35);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(0, 120, 212, 0.45); }
.btn-ghost {
  background: var(--card-solid);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.btn-lg { font-size: 16px; padding: 14px 30px; border-radius: 12px; }

.nav-burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-burger svg { width: 22px; height: 22px; stroke: var(--text); }

/* ---------- 通用 section ---------- */
.section { padding: 88px 0; }
.section-alt { background: rgba(255, 255, 255, 0.5); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-head .kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.section-head h1, .section-head h2 { font-size: 34px; line-height: 1.25; margin-bottom: 14px; }
.section-head p { color: var(--text-2); font-size: 16.5px; }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 96px; position: relative; overflow: hidden; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 56px;
}
.hero-copy .badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(0, 62, 146, 0.08);
  border: 1px solid rgba(0, 120, 212, 0.22);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero-copy .badge svg { width: 15px; height: 15px; }
.hero-copy h1 {
  font-size: 46px;
  line-height: 1.22;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero-copy h1 .hl {
  background: linear-gradient(120deg, var(--accent), var(--accent-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-copy .sub { color: var(--text-2); font-size: 18px; max-width: 520px; margin-bottom: 32px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 18px; color: var(--text-3); font-size: 13.5px; }

/* Hero 视觉：设备 + 聊天 mock 组合 */
.hero-visual { position: relative; height: 460px; }
.stage-device {
  position: absolute;
  left: 0;
  top: 12px;
  width: 236px;
  z-index: 1;
  animation: float 6s ease-in-out infinite;
}
.stage-chat {
  position: absolute;
  right: 0;
  bottom: 6px;
  width: 330px;
  z-index: 2;
  transform: rotate(-1.5deg);
  animation: float 7s ease-in-out 0.8s infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0); }
  50% { transform: translateY(-8px); }
}
/* 手机 mock */
.device {
  aspect-ratio: 9 / 19.5;
  border-radius: 30px;
  background: #111214;
  padding: 10px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.28), 0 4px 12px rgba(0, 0, 0, 0.2);
  position: relative;
}
.device::before, .device::after { /* 侧键 */
  content: "";
  position: absolute;
  width: 3px;
  border-radius: 2px;
  background: #2a2b2e;
}
.device::before { right: -3px; top: 92px; height: 54px; }
.device::after { right: -3px; top: 158px; height: 32px; }
.device-notch { position: absolute; top: 14px; left: 50%; transform: translateX(-50%); width: 84px; height: 20px; background: #111214; border-radius: 999px; z-index: 2; }
.device-screen {
  width: 100%;
  height: 100%;
  border-radius: 22px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(160deg, #2f6fd0 0%, #5b8cf5 55%, #9fbaf7 100%);
}
.status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px 0;
  color: rgba(255, 255, 255, 0.92);
  font-size: 11px;
  font-weight: 600;
}
.status-bar .dots { display: flex; gap: 3px; align-items: center; }
.status-bar .dots i { width: 4px; height: 4px; border-radius: 50%; background: rgba(255,255,255,0.85); display: block; }
.app-grid {
  padding: 4px 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(4, auto);
  gap: 18px 10px;
  align-content: start;
}
.app-icon {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.14);
  position: relative;
}
.app-icon small {
  position: absolute;
  bottom: -19px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  color: rgba(255,255,255,0.9);
  white-space: nowrap;
}
.app-icon.c1 { background: #34c759; }
.app-icon.c2 { background: #ff9500; }
.app-icon.c3 { background: #8e8e93; }
.app-icon.c4 { background: #ff3b30; }
.app-icon.c5 { background: #5ac8fa; }
.app-icon.c6 { background: #af52de; }
.app-icon.c7 { background: #ffcc00; }
.app-icon.c8 { background: #0078d4; }
.app-icon.c9 { background: #ff2d55; }
.app-icon.c10 { background: #5856d6; }
.app-icon.c11 { background: #ff6482; }
.app-icon.c12 { background: #32ade6; }
.app-icon.c13 { background: #ffb3c1; }

/* ---- Hero 手机屏幕多场景（随对话切换） ---- */
.device-screen > .status-bar { position: relative; z-index: 2; }
.scene {
  position: absolute;
  inset: 0;
  overflow: hidden;
  animation: scene-in 0.28s ease;
}
.scene[hidden] { display: none; }
@keyframes scene-in {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: none; }
}

/* 场景 · 桌面 */
.scene-home { padding-top: 42px; display: flex; flex-direction: column; }
.scene-home .home-search {
  margin: 0 16px 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  padding: 7px 12px;
}
.scene-home .home-search svg { width: 11px; height: 11px; }
.scene-home .home-dock {
  margin-top: auto;
  padding: 12px 30px 10px;
  display: flex;
  justify-content: space-between;
}
.scene-home .home-dock .app-icon { margin: 0; }
.scene-home .home-bar {
  width: 92px;
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  margin: 0 auto 8px;
}

/* 场景 · 相册整理 */
.scene-gallery { background: #fff; display: flex; flex-direction: column; }
.scene-gallery .g-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 30px 14px 10px;
  font-size: 12px;
  font-weight: 700;
  color: #111;
}
.scene-gallery .g-head .g-back { font-size: 17px; line-height: 1; color: #444; }
.scene-gallery .g-head .g-count {
  margin-left: auto;
  font-size: 9px;
  font-weight: 600;
  color: #7a7a7a;
  background: #f1f2f5;
  border-radius: 999px;
  padding: 2px 9px;
}
.scene-gallery .g-grid {
  padding: 0 10px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
}
.scene-gallery .photo { aspect-ratio: 1; border-radius: 7px; position: relative; overflow: hidden; }
.scene-gallery .photo:nth-child(1) { background: linear-gradient(150deg, #9fc3f2, #d3e4fb); }
.scene-gallery .photo:nth-child(2) { background: linear-gradient(150deg, #f6bd92, #fbe5cf); }
.scene-gallery .photo:nth-child(3) { background: linear-gradient(150deg, #92d9a8, #d2f2dc); }
.scene-gallery .photo:nth-child(4) { background: linear-gradient(150deg, #ef9ecf, #fbd7ee); }
.scene-gallery .photo:nth-child(5) { background: linear-gradient(150deg, #e0bd79, #f6e6c3); }
.scene-gallery .photo:nth-child(6) { background: linear-gradient(150deg, #8fc8e4, #d0edf7); }
.scene-gallery .photo:nth-child(7) { background: linear-gradient(150deg, #b3a3ee, #ddd4f8); }
.scene-gallery .photo:nth-child(8) { background: linear-gradient(150deg, #f0a1a1, #fbd5d5); }
.scene-gallery .photo:nth-child(9) { background: linear-gradient(150deg, #9fd8cf, #d3f2ee); }
.scene-gallery .photo .selmark {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 9.5px;
  font-style: normal;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.25);
}
.scene-gallery .g-done {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 10px;
  font-weight: 600;
  color: #1b7f3d;
  background: #ecf7f0;
  border: 1px solid #cdecd8;
  border-radius: 10px;
  padding: 8px 11px;
}
.scene-gallery .g-done svg { width: 14px; height: 14px; flex: none; }
.scene-gallery .g-done[hidden] { display: none; }

/* 场景 · 快捷设置 / 勿扰 */
.scene-shade {
  background: rgba(17, 22, 32, 0.42);
  padding: 38px 10px 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.scene-shade .shade-card { background: rgba(255, 255, 255, 0.96); border-radius: 16px; padding: 12px; }
.scene-shade .quick-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.scene-shade .q-toggle {
  aspect-ratio: 1;
  border-radius: 12px;
  background: #eef1f6;
  color: #6b7280;
  display: flex;
  align-items: center;
  justify-content: center;
}
.scene-shade .q-toggle.on {
  background: linear-gradient(180deg, #0078d4, #005a9e);
  color: #fff;
  animation: pulse 1.4s ease infinite;
}
.scene-shade .q-toggle svg { width: 15px; height: 15px; }
.scene-shade .shade-extra {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 11px;
  padding-top: 11px;
  border-top: 1px solid #f0f2f6;
  font-size: 10px;
  color: #666;
}
.scene-shade .shade-extra svg { width: 14px; height: 14px; flex: none; }
.scene-shade .shade-extra .slider {
  flex: 1;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) 68%, #e5e8ee 68%);
}
.scene-shade .n-card {
  display: flex;
  align-items: center;
  gap: 9px;
  background: rgba(255, 255, 255, 0.96);
  border-radius: 12px;
  padding: 9px 11px;
}
.scene-shade .n-card .n-ico {
  width: 24px;
  height: 24px;
  border-radius: 7px;
  flex: none;
  background: linear-gradient(150deg, #9fc3f2, #5b8cf5);
}
.scene-shade .n-card .n-body { flex: 1; min-width: 0; }
.scene-shade .n-card .n-body b { display: block; font-size: 10px; color: #222; }
.scene-shade .n-card .n-body span { font-size: 8.5px; color: #999; }
.scene-shade .n-card .n-when { font-size: 8px; color: #aaa; }
.scene-shade .dnd-pill {
  align-self: center;
  margin-top: auto;
  margin-bottom: 8px;
  font-size: 9px;
  font-weight: 600;
  color: #fff;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 999px;
  padding: 5px 13px;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 120, 212, 0.5); }
  60% { box-shadow: 0 0 0 6px rgba(0, 120, 212, 0); }
}

/* 场景 · 分享结果 */
.scene-share { background: #fff; display: flex; flex-direction: column; }
.scene-share .s-head {
  padding: 30px 14px 6px;
  font-size: 12px;
  font-weight: 700;
  color: #111;
}
.scene-share .s-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 0 14px 20px;
}
.scene-share .s-preview { font-size: 10px; color: #888; }
.scene-share .s-apps { display: flex; gap: 15px; }
.scene-share .s-app {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 5px 12px rgba(0, 0, 0, 0.12);
}
.scene-share .s-app svg { width: 18px; height: 18px; }
.scene-share .s-app.a1 { background: linear-gradient(135deg, #5ac8fa, #0078d4); }
.scene-share .s-app.a2 { background: linear-gradient(135deg, #ffb74d, #ff9500); }
.scene-share .s-app.a3 { background: linear-gradient(135deg, #7fd2a8, #34c759); }
.scene-share .s-app.a4 { background: linear-gradient(135deg, #c39df2, #af52de); }
.scene-share .s-app.a5 { background: linear-gradient(135deg, #ff9cbb, #ff2d55); }
.scene-share .s-toast {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 10px;
  font-weight: 600;
  color: #fff;
  background: rgba(0, 0, 0, 0.72);
  border-radius: 999px;
  padding: 7px 12px;
}
.scene-share .s-toast svg { width: 13px; height: 13px; }
.scene-share .s-toast[hidden] { display: none; }

/* 聊天面板 mock */
.chat {
  background: var(--card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.chat-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  background: #fbfcfd;
}
.chat-bar .dot { width: 11px; height: 11px; border-radius: 50%; }
.chat-bar .dot.r { background: #ff5f57; }
.chat-bar .dot.y { background: #febc2e; }
.chat-bar .dot.g { background: #28c840; }
.chat-bar .title { flex: 1; text-align: center; font-size: 13px; font-weight: 600; color: var(--text-2); }
.chat-body {
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #f7f9fc;
  max-height: 250px;
  overflow-y: auto;
  scrollbar-width: none;
}
.chat-body::-webkit-scrollbar { display: none; }
.msg { max-width: 82%; padding: 10px 14px; font-size: 13.5px; line-height: 1.55; border-radius: 14px; }
.msg.user { align-self: flex-end; background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
.msg.ai { align-self: flex-start; background: #fff; color: var(--text); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.tool-chip {
  align-self: flex-end;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: #1b7f3d;
  background: #ecf7f0;
  border: 1px solid #cdecd8;
  padding: 5px 11px;
  border-radius: 999px;
}
.tool-chip svg { width: 13px; height: 13px; }
.chat-input {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 9px 12px;
  font-size: 13px;
  color: var(--text-3);
}
.chat-input .send { width: 22px; height: 22px; color: var(--accent); flex: none; }
.chat-body .msg, .chat-body .tool-chip { animation: msg-in 0.26s ease; }
@keyframes msg-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 卖点卡片 ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 22px; }
.feature-card {
  background: var(--card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s, box-shadow 0.18s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.feature-card .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(150deg, var(--accent), var(--accent-dark));
  color: #fff;
  margin-bottom: 18px;
}
.feature-card .icon svg { width: 24px; height: 24px; }
.feature-card h3 { font-size: 19px; margin-bottom: 9px; }
.feature-card p { color: var(--text-2); font-size: 14.5px; }
.feature-card .more { display: inline-block; margin-top: 14px; font-size: 14px; font-weight: 600; }
.feature-card .more svg { width: 14px; height: 14px; vertical-align: -2px; }

/* ---------- 功能页详细 ---------- */
.feat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 40px 0;
}
.feat-row + .feat-row { border-top: 1px solid var(--border); }
.feat-row:nth-child(even) .feat-text { order: 2; }
.feat-row:nth-child(even) .feat-visual { order: 1; }
.feat-text h3 { font-size: 26px; margin-bottom: 12px; }
.feat-text p { color: var(--text-2); font-size: 16px; margin-bottom: 14px; }
.feat-text .tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: #1b7f3d;
  background: #ecf7f0;
  border: 1px solid #cdecd8;
  padding: 4px 11px;
  border-radius: 999px;
}
.feat-visual {
  background: linear-gradient(160deg, #eaf2fd, #f6f9ff);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  min-height: 210px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 步骤时间线（工作流） */
.steps { display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; counter-reset: step; }
.step-card {
  flex: 1 1 220px;
  max-width: 250px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.step-card::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -14px;
  left: 20px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-card h4 { font-size: 16.5px; margin: 10px 0 8px; }
.step-card p { color: var(--text-2); font-size: 13.8px; }
.step-card .code {
  font-family: Consolas, "Courier New", monospace;
  font-size: 12.5px;
  background: #0f1420;
  color: #9fdcff;
  padding: 7px 11px;
  border-radius: 8px;
  margin-bottom: 10px;
  word-break: break-all;
}

/* 下载页 */
.dl-hero {
  text-align: center;
  padding: 72px 0 40px;
}
.dl-hero img { width: 88px; height: 88px; margin: 0 auto 22px; }
.dl-hero h1 { font-size: 38px; margin-bottom: 12px; }
.dl-hero p { color: var(--text-2); font-size: 17px; max-width: 560px; margin: 0 auto; }
.dl-card {
  max-width: 640px;
  margin: 0 auto;
  background: var(--card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 44px 40px;
  text-align: center;
}
.ver-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-dark);
  background: var(--accent-soft);
  border: 1px solid rgba(0, 120, 212, 0.22);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 26px;
}
.dl-card .btn { width: 100%; font-size: 17px; padding: 16px 0; margin-bottom: 14px; }
.dl-note { color: var(--text-2); font-size: 14px; margin-bottom: 26px; }
.dl-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--text-3);
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.dl-meta b { color: var(--text-2); font-weight: 600; }
.spec-list {
  max-width: 640px;
  margin: 34px auto 0;
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.spec {
  background: var(--card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-size: 13.5px;
  color: var(--text-2);
  box-shadow: var(--shadow-sm);
}
.spec b { color: var(--text); }

/* 上手三步（水平） */
.howto { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.howto .step {
  background: var(--card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.howto .step .num {
  width: 44px;
  height: 44px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.howto .step h3 { font-size: 17px; margin-bottom: 8px; }
.howto .step p { color: var(--text-2); font-size: 14px; }

/* 多设备列表 mock */
.device-list { display: flex; gap: 16px; }
.device-card {
  width: 74px;
  aspect-ratio: 9 / 18;
  border-radius: 16px;
  border: 2px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.18);
  background: linear-gradient(160deg, #2f6fd0, #9fbaf7);
  position: relative;
  flex: none;
}
.device-card .scr { position: absolute; inset: 0; border-radius: 14px; display: flex; align-items: flex-end; justify-content: center; padding-bottom: 8px; font-size: 8px; color: #fff; }
.device-card.on { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0, 120, 212, 0.25), 0 10px 22px rgba(0, 0, 0, 0.18); }

/* 步骤清单 mock（自动化重放） */
.check-list { width: 100%; max-width: 320px; background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 16px; display: flex; flex-direction: column; gap: 10px; box-shadow: var(--shadow-sm); }
.check-item { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--text-2); }
.check-item .ck { width: 18px; height: 18px; border-radius: 50%; background: #1b7f3d; color: #fff; display: flex; align-items: center; justify-content: center; flex: none; }
.check-item .ck svg { width: 11px; height: 11px; }
.check-item.dim { color: var(--text-3); }
.check-item.dim .ck { background: #dfe3ea; }

/* 定时任务 mock */
.sched-list {
  width: 100%;
  max-width: 320px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow-sm);
}
.sched-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13.5px;
  color: var(--text-2);
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid transparent;
}
.sched-item .time {
  font-weight: 700;
  font-size: 13px;
  color: var(--accent-dark);
  font-variant-numeric: tabular-nums;
  background: var(--accent-soft);
  border: 1px solid rgba(0, 120, 212, 0.22);
  padding: 3px 10px;
  border-radius: 8px;
  flex: none;
}
.sched-item.on {
  border-color: rgba(0, 120, 212, 0.3);
  background: var(--accent-soft);
  color: var(--text);
}
.sched-item.on .time {
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  color: #fff;
}

/* 迷你对话（AI 对话操控） */
.mini-chat { width: 100%; max-width: 300px; display: flex; flex-direction: column; gap: 10px; }
.mini-chat .msg { font-size: 13px; }

/* 盾牌图标 */
.shield-icon { width: 110px; height: 110px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  padding: 19px 22px;
  font-size: 16px;
  font-weight: 600;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--text-3);
  transition: transform 0.2s;
  flex: none;
}
.faq-item[open] summary::after { transform: rotate(45deg); color: var(--accent); }
.faq-item .ans { padding: 0 22px 20px; color: var(--text-2); font-size: 15px; }

/* ---------- 咨询页 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 22px; max-width: 900px; margin: 0 auto; }
.contact-card {
  background: var(--card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s, box-shadow 0.18s;
}
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.contact-card .icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
}
.contact-card .icon svg { width: 26px; height: 26px; }
.contact-card h3 { font-size: 18px; margin-bottom: 8px; }
.contact-card .val { font-size: 15px; color: var(--text); word-break: break-all; font-weight: 600; }
.contact-card .hint { margin-top: 6px; font-size: 13px; color: var(--text-3); }

/* ---------- CTA 条 ---------- */
.cta-band {
  background: linear-gradient(150deg, var(--accent-dark), var(--accent-deep));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.cta-band h2 { font-size: 30px; margin-bottom: 14px; }
.cta-band p { opacity: 0.85; font-size: 16.5px; margin-bottom: 28px; max-width: 560px; margin-left: auto; margin-right: auto; }
.cta-band .btn-primary { background: #fff; color: var(--accent-dark); box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2); }
.cta-band .btn-primary:hover { box-shadow: 0 10px 28px rgba(0, 0, 0, 0.3); }
.cta-band .btn-ghost { background: rgba(255, 255, 255, 0.12); color: #fff; border-color: rgba(255, 255, 255, 0.35); }
.cta-band .btn-ghost:hover { border-color: #fff; color: #fff; }
.cta-band .btn-group { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--border); padding: 40px 0; margin-top: 40px; }
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 15px; }
.footer-brand img { width: 22px; height: 22px; }
.footer-links { display: flex; gap: 18px; font-size: 14px; }
.footer-links a { color: var(--text-2); }
.footer-links a:hover { color: var(--accent); }
.footer-note { flex-basis: 100%; font-size: 12.5px; color: var(--text-3); text-align: center; }
.footer-note a { color: var(--text-3); text-decoration: none; }
.footer-note a:hover { color: var(--accent); text-decoration: underline; }
.footer-copy { font-size: 12.5px; color: var(--text-3); }
.footer-contact { display: flex; flex-direction: column; gap: 8px; font-size: 13.5px; }
.footer-contact .fc-title { font-weight: 700; font-size: 13px; color: var(--text); margin-bottom: 2px; }
.footer-contact .fc-item { display: flex; align-items: center; gap: 8px; color: var(--text-2); }
.footer-contact .fc-item svg { width: 15px; height: 15px; color: var(--accent); flex-shrink: 0; }
.footer-contact .fc-item a { color: var(--accent); }
.footer-contact .fc-item b { font-weight: 600; }

/* ---------- 右侧浮动联系 ---------- */
.contact-float {
  position: fixed;
  right: 22px;
  bottom: 26px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}
.contact-float-btn {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  box-shadow: 0 8px 24px rgba(0, 120, 212, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.18s ease;
}
.contact-float-btn:hover { transform: scale(1.06); }
.contact-float-btn svg { width: 24px; height: 24px; }
.contact-float-panel {
  background: var(--card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  padding: 16px;
  min-width: 250px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  animation: float-in 0.18s ease;
}
.contact-float-panel[hidden] { display: none; }
@keyframes float-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
.contact-float-panel .cf-head { font-weight: 700; font-size: 14px; margin-bottom: 2px; }
.contact-float-panel .cf-item { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text-2); }
.contact-float-panel .cf-item svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; }
.contact-float-panel .cf-item .cf-val { color: var(--text); font-weight: 600; word-break: break-all; }
.contact-float-panel .cf-item a { color: var(--accent); }

/* ---------- 响应式 ---------- */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-copy h1 { font-size: 38px; }
  .hero-visual { height: 420px; max-width: 560px; margin: 0 auto; width: 100%; }
  .feat-row { grid-template-columns: 1fr; gap: 28px; }
  .feat-row:nth-child(even) .feat-text { order: 0; }
  .feat-row:nth-child(even) .feat-visual { order: 0; }
  .howto { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
}
@media (max-width: 720px) {
  .nav-burger { display: block; }
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
    gap: 2px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s, transform 0.18s;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px 14px; }
  .nav .btn { display: none; }
  .hero-copy h1 { font-size: 32px; }
  .section-head h1, .section-head h2 { font-size: 28px; }
  .stage-device { width: 190px; }
  .stage-chat { width: 268px; }
  .dl-card { padding: 32px 22px; }
  .contact-float { right: 16px; bottom: 18px; }
  .contact-float-btn { width: 48px; height: 48px; }
}

/* ---------- 资讯列表 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 22px; }
.news-card {
  background: var(--card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 26px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.18s, box-shadow 0.18s;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-card .tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-dark);
  background: var(--accent-soft);
  border: 1px solid rgba(0, 120, 212, 0.22);
  padding: 4px 11px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.news-card h3 { font-size: 19px; line-height: 1.4; margin-bottom: 10px; }
.news-card h3 a { color: var(--text); }
.news-card h3 a:hover { color: var(--accent); }
.news-card p { color: var(--text-2); font-size: 14.5px; flex: 1; }
.news-card .meta { display: flex; align-items: center; gap: 10px; margin-top: 16px; font-size: 13px; color: var(--text-3); }
.news-card .meta .more { margin-left: auto; font-weight: 600; color: var(--accent); }

/* ---------- 资讯分页 ---------- */
.news-grid .news-card[hidden] { display: none; }
.news-pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 40px;
}
.news-pager[hidden] { display: none; }
.news-pager button {
  min-width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: var(--card-solid);
  color: var(--text-2);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  padding: 0 10px;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.news-pager button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.news-pager button:disabled { opacity: 0.4; cursor: default; }
.news-pager .on { background: linear-gradient(180deg, var(--accent), var(--accent-dark)); color: #fff; border-color: transparent; }
.news-pager .np-prev, .news-pager .np-next { font-size: 18px; padding: 0; }

/* ---------- 面包屑 ---------- */
.breadcrumb { max-width: 760px; margin: 0 auto 28px; font-size: 13.5px; color: var(--text-3); }
.breadcrumb a { color: var(--text-3); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 8px; }

/* ---------- 文章页 ---------- */
.article { max-width: 760px; margin: 0 auto; }
.article-head { text-align: left; margin-bottom: 34px; }
.article-head .kicker {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--accent-dark);
  background: var(--accent-soft);
  border: 1px solid rgba(0, 120, 212, 0.22);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.article-head h1 { font-size: 32px; line-height: 1.3; letter-spacing: -0.01em; margin-bottom: 14px; }
.article-meta { color: var(--text-3); font-size: 13.5px; display: flex; gap: 14px; align-items: center; }
.article-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--text-3); }

.article-body { font-size: 16.5px; line-height: 1.85; color: var(--text); }
.article-body > p { margin-bottom: 1.2em; }
.article-body h2 { font-size: 24px; margin: 2em 0 0.7em; line-height: 1.35; }
.article-body h3 { font-size: 19px; margin: 1.6em 0 0.5em; }
.article-body ul, .article-body ol { margin: 0 0 1.2em 1.4em; }
.article-body li { margin-bottom: 0.4em; }
.article-body blockquote {
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  padding: 14px 18px;
  border-radius: 0 10px 10px 0;
  margin: 1.4em 0;
  color: var(--text-2);
}
.article-body code {
  background: rgba(0, 0, 0, 0.06);
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 0.9em;
  font-family: Consolas, "Courier New", monospace;
}
.article-body .tip {
  background: var(--accent-soft);
  border: 1px solid rgba(0, 120, 212, 0.2);
  border-radius: 10px;
  padding: 14px 18px;
  margin: 1.4em 0;
  font-size: 0.92em;
}

.article-related { margin-top: 48px; padding-top: 30px; border-top: 1px solid var(--border); }
.article-related h3 { font-size: 18px; margin-bottom: 16px; }
.article-related .related-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.related-item {
  background: var(--card-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  transition: box-shadow 0.15s, border-color 0.15s;
}
.related-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.related-item .cat { font-size: 11.5px; font-weight: 700; color: var(--accent); margin-bottom: 6px; }
.related-item .t { font-size: 15px; font-weight: 600; color: var(--text); line-height: 1.4; }
.article-back { display: inline-block; margin-top: 28px; font-weight: 600; }

@media (max-width: 720px) {
  .article-head h1 { font-size: 26px; }
  .article-body { font-size: 16px; }
  .article-related .related-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .stage-device, .stage-chat,
  .scene, .chat-body .msg, .chat-body .tool-chip,
  .scene-shade .q-toggle.on { animation: none; }
}

/* ---------- 404 ---------- */
.e404 { min-height: 62vh; display: flex; align-items: center; }
.e404 .container { width: 100%; }
.e404-card { text-align: center; padding: 48px 24px; }
.e404-code { font-size: 76px; font-weight: 700; color: var(--accent); line-height: 1; }
.e404-card h1 { margin: 12px 0 8px; }
.e404-card p { color: var(--text-2); margin-bottom: 24px; }