/* ===================================================================
   WeiClaw 3.0 · 官方站 (Light Cool · 对齐桌面端)
   -------------------------------------------------------------------
   气质: 高级 · 简洁 · 优雅 · 大气 · 现代 SaaS
   配色: 白 #FFFFFF + 浅灰 #F6F8FB + 品牌蓝 #2E5BFF + 极光紫 #6B5BFF
   字体: Inter (sans) · Noto Sans SC
   对齐桌面端 light-warm 主题 + brand-gradient
   =================================================================== */

:root {
  /* ---- 色板：Light Cool（与桌面端 light-warm 完全一致） ---- */
  --c-paper:      #FFFFFF;
  --c-paper-2:    #F6F8FB;
  --c-paper-3:    #EEF1F6;
  --c-paper-warm: #FAFBFD;

  --c-ink:        #0F1729;
  --c-ink-2:      #4B5568;
  --c-ink-3:      #8A94A6;
  --c-ink-4:      #C4CBD6;

  --c-line:       rgba(15, 23, 41, 0.08);
  --c-line-soft:  rgba(15, 23, 41, 0.04);
  --c-line-strong:rgba(15, 23, 41, 0.14);

  /* ---- 强调色（极光蓝） ---- */
  --c-accent-50:  #EEF3FF;
  --c-accent-100: #D6E1FF;
  --c-accent-200: #ADC1FF;
  --c-accent-300: #7A95FF;
  --c-accent-400: #4F7BFF;
  --c-accent-500: #2E5BFF;
  --c-accent-600: #1F44E0;
  --c-accent-700: #1734B3;
  --c-accent:     var(--c-accent-500);
  --c-accent-hover: var(--c-accent-400);
  --c-accent-soft: rgba(46, 91, 255, 0.10);
  --c-accent-soft-strong: rgba(46, 91, 255, 0.18);

  /* ---- 科技点缀色 ---- */
  --c-cyan: #00C7B7;
  --c-cyan-soft: rgba(0, 199, 183, 0.12);
  --c-violet: #6B5BFF;
  --c-violet-soft: rgba(107, 91, 255, 0.12);
  --c-mint: #5BE7C4;

  /* ---- 状态色 ---- */
  --c-ok: #10B981;
  --c-warn: #F59E0B;
  --c-err: #EF4444;
  --c-info: var(--c-accent);

  /* ---- 字体 ---- */
  --f-sans: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", "SF Mono", Consolas, monospace;

  /* ---- 圆角（与桌面端一致） ---- */
  --r-1: 8px;
  --r-2: 14px;
  --r-3: 22px;
  --r-4: 32px;

  /* ---- 阴影 ---- */
  --sh-1: 0 1px 2px rgba(15,23,41,.05), 0 1px 1px rgba(15,23,41,.03);
  --sh-2: 0 4px 16px rgba(15,23,41,.06), 0 1px 2px rgba(15,23,41,.04);
  --sh-3: 0 12px 32px rgba(15,23,41,.08), 0 2px 6px rgba(15,23,41,.04);
  --sh-4: 0 32px 64px rgba(15,23,41,.12), 0 6px 16px rgba(15,23,41,.06);
  --sh-accent:    0 12px 32px rgba(46, 91, 255, 0.22);
  --sh-accent-lg: 0 24px 60px rgba(46, 91, 255, 0.28);

  /* ---- 节奏 ---- */
  --gutter: 56px;
  --container: 1280px;

  /* ---- 动画 ---- */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
  :root { --gutter: 22px; }
}

/* ===================================================================
   RESET
   =================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-ink);
  background: var(--c-paper);
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  font-feature-settings: "kern", "liga", "calt";
}

img, svg { display: block; max-width: 100%; height: auto; }

a {
  color: inherit;
  text-decoration: none;
  transition: color .3s var(--ease), opacity .3s var(--ease);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: 0;
  background: none;
  color: inherit;
}

ol, ul { list-style: none; }

em, i { font-style: normal; }

::selection {
  background: var(--c-accent);
  color: #fff;
}

/* ===================================================================
   全屏背景（极淡蓝灰渐变 + 装饰光斑）
   =================================================================== */
.grain {
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(46, 91, 255, 0.06), transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(0, 199, 183, 0.04), transparent 60%),
    var(--c-paper);
  pointer-events: none;
}

.cursor-glow {
  position: fixed;
  width: 480px; height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 91, 255, 0.10), transparent 60%);
  pointer-events: none; z-index: -1;
  transform: translate(-50%, -50%);
  filter: blur(40px);
  opacity: 0;
  transition: opacity .3s var(--ease);
}

body.js-on .cursor-glow { opacity: 1; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ===================================================================
   NAV
   =================================================================== */
.nav {
  position: sticky;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(160%) blur(20px);
  -webkit-backdrop-filter: saturate(160%) blur(20px);
  border-bottom: 1px solid var(--c-line);
}

.nav-in {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.brand-mark {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  border-radius: 0;
}
.brand-mark img {
  width: 100%; height: 100%;
  display: block;
  object-fit: contain;
  background: transparent;
}

.brand-text { color: var(--c-ink); font-weight: 600; }
.brand-text em { font-style: normal; color: var(--c-accent); font-weight: 600; }

.brand-ver {
  font-size: 11px;
  font-weight: 600;
  color: var(--c-accent);
  background: var(--c-accent-soft);
  padding: 2px 7px;
  border-radius: 5px;
  margin-left: 2px;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
  font-size: 14px;
  font-weight: 500;
}

.nav-links a {
  color: var(--c-ink-2);
  position: relative;
  padding: 4px 0;
  transition: color .25s var(--ease);
}

.nav-links a:hover { color: var(--c-accent); }

.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -2px;
  width: 0; height: 2px;
  background: var(--c-accent);
  transition: width .3s var(--ease), left .3s var(--ease);
}

.nav-links a:hover::after { width: 100%; left: 0; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 10px;
  background: linear-gradient(135deg, #4F7BFF 0%, #2E5BFF 55%, #6B5BFF 100%);
  color: #fff !important;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(46, 91, 255, 0.30);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(46, 91, 255, 0.36);
}

.nav-cta-arrow {
  display: inline-block;
  animation: nav-bounce 1.6s ease-in-out infinite;
}

@keyframes nav-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(2px); }
}

@media (max-width: 980px) {
  .nav-links { display: none; }
}

/* ===================================================================
   HERO
   =================================================================== */
.hero {
  position: relative;
  padding: 80px 0 100px;
  overflow: hidden;
}

.hero-bg {
  position: absolute; inset: 0;
  z-index: -1;
  pointer-events: none;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
}

.blob-1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(46, 91, 255, 0.30), transparent 60%);
  top: -120px; left: -120px;
}

.blob-2 {
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(107, 91, 255, 0.22), transparent 60%);
  top: 100px; right: -80px;
}

.blob-3 {
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(0, 199, 183, 0.18), transparent 60%);
  bottom: -100px; left: 40%;
}

.hero-rule {
  position: absolute;
  bottom: 60px; left: 50%;
  transform: translateX(-50%);
  width: 1px; height: 80px;
  background: linear-gradient(180deg, transparent, var(--c-line-strong), transparent);
}

.hero-in {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--c-paper-2);
  border: 1px solid var(--c-line);
  font-size: 12px;
  font-weight: 500;
  color: var(--c-ink-2);
  margin-bottom: 22px;
}

.eyebrow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 4px var(--c-accent-soft);
}

.eyebrow-sep { color: var(--c-ink-3); }
.eyebrow-meta { color: var(--c-ink-3); }

.display {
  font-size: clamp(38px, 5vw, 60px);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--c-ink);
  margin-bottom: 22px;
}

.d-line { display: block; }

.display em {
  font-style: normal;
  background: linear-gradient(135deg, #4F7BFF 0%, #2E5BFF 55%, #6B5BFF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  font-size: 17px;
  line-height: 1.7;
  color: var(--c-ink-2);
  margin-bottom: 36px;
  max-width: 560px;
}

.lede strong {
  color: var(--c-ink);
  font-weight: 600;
}

.hero-cta {
  display: flex;
  gap: 14px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #4F7BFF 0%, #2E5BFF 55%, #6B5BFF 100%);
  color: #fff;
  box-shadow: 0 8px 24px rgba(46, 91, 255, 0.30);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(46, 91, 255, 0.40);
}

.btn-ghost {
  background: var(--c-paper-2);
  color: var(--c-ink);
  border: 1px solid var(--c-line);
}

.btn-ghost:hover {
  background: var(--c-paper-3);
  border-color: var(--c-line-strong);
  transform: translateY(-2px);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
}

.btn-arrow {
  display: inline-block;
  transition: transform .25s var(--ease);
}

.btn:hover .btn-arrow { transform: translateX(4px); }

.btn-lg {
  padding: 18px 32px;
  font-size: 16px;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  padding-top: 28px;
  border-top: 1px solid var(--c-line);
}

.hm-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hm-item b {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-ink);
}

.hm-item span {
  font-size: 12px;
  color: var(--c-ink-3);
}

/* HERO 右侧 · 浮动卡片 */
.hero-art {
  position: relative;
  height: 540px;
}

.orbit {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 100%; height: 100%;
  pointer-events: none;
}

.orbit-ring {
  position: absolute;
  top: 50%; left: 50%;
  border-radius: 50%;
  border: 1px dashed var(--c-line-strong);
  transform: translate(-50%, -50%);
}

.orbit-ring.r1 { width: 360px; height: 360px; opacity: 0.4; }
.orbit-ring.r2 { width: 480px; height: 480px; opacity: 0.25; }
.orbit-ring.r3 { width: 600px; height: 600px; opacity: 0.12; }

.card-stack {
  position: relative;
  width: 100%; height: 100%;
}

.floating-card {
  position: absolute;
  width: 88%;
  border-radius: 16px;
  overflow: hidden;
  background: var(--c-paper);
  box-shadow: var(--sh-4);
  border: 1px solid var(--c-line);
  transition: transform .35s var(--ease);
}

.fc-back  { top:  0;  left: 6%;  transform: rotate(-4deg) scale(0.92); z-index: 1; }
.fc-mid   { top: 90px; left: 4%; transform: rotate(2deg)  scale(0.96); z-index: 2; }
.fc-front { top: 180px; left: 8%; transform: rotate(-1deg);              z-index: 3; }

.floating-card:hover { transform: rotate(0) scale(1.02); z-index: 4; }

.fc-frame { padding: 10px; }
.fc-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px 10px;
  font-size: 12px;
  color: var(--c-ink-2);
}

.fc-bar .d {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--c-paper-3);
}

.fc-bar .d1 { background: #FF6157; }
.fc-bar .d2 { background: #FFBD2E; }
.fc-bar .d3 { background: #28CA42; }

.fc-bar em { margin-left: auto; font-style: normal; font-weight: 500; }

.fc-frame img {
  width: 100%;
  border-radius: 8px;
  display: block;
}

.bubble {
  position: absolute;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-2);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--c-ink);
  z-index: 5;
  white-space: nowrap;
}

.bubble-1 { top: 30px; right: 0; background: var(--c-accent); color: #fff; border-color: var(--c-accent); }
.bubble-2 { bottom: 140px; left: -10px; }
.bubble-3 { bottom: 50px; right: 0; background: var(--c-accent-50); color: var(--c-accent); border-color: var(--c-accent-100); }

.scroll-hint {
  position: absolute;
  bottom: 18px; left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-ink-3);
}

.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(180deg, var(--c-ink-3), transparent);
  animation: scroll-pulse 1.8s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { transform: scaleY(0.4); transform-origin: top; }
  50% { transform: scaleY(1); }
}

@media (max-width: 980px) {
  .hero-in { grid-template-columns: 1fr; }
  .hero-art { height: 420px; margin-top: 30px; }
  .hero-meta { grid-template-columns: repeat(2, 1fr); }
}

/* ===================================================================
   SECTION · 通用
   =================================================================== */
.section {
  padding: 100px 0;
  position: relative;
}

.sec-head {
  text-align: center;
  margin-bottom: 60px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.sec-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.sec-label em { font-style: normal; color: var(--c-ink-3); margin-right: 6px; }

.sec-title {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--c-ink);
  margin-bottom: 16px;
}

.sec-title em {
  font-style: normal;
  background: linear-gradient(135deg, #4F7BFF 0%, #2E5BFF 55%, #6B5BFF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sec-sub {
  font-size: 16px;
  line-height: 1.65;
  color: var(--c-ink-2);
}

.sec-sub strong { color: var(--c-ink); font-weight: 600; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease-out), transform .9s var(--ease-out); }
/* app.js 往 documentElement 加 .js-on；同时支持 .de 挂载点，兼容不同版本 */
html.js-on .reveal,
.de.js-on .reveal { opacity: 1; transform: translateY(0); }
html.js-on .reveal-timeout,
.de.js-on .reveal-timeout { transition-delay: .1s; }
/* 兜底：JS 异常 / IntersectionObserver 不支持时，3s 后强制可见，避免页面空白 */
@media (prefers-reduced-motion: no-preference) {
  .reveal { animation: weiclaw-reveal-show 0.001s 3s forwards; }
  @keyframes weiclaw-reveal-show {
    to { opacity: 1 !important; transform: none !important; }
  }
}

/* ===================================================================
   FEATURE GRID (核心)
   =================================================================== */
.feature { background: var(--c-paper-2); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ft-card {
  position: relative;
  padding: 36px 32px;
  border-radius: var(--r-3);
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
  overflow: hidden;
}

.ft-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-accent-400), var(--c-violet));
  opacity: 0;
  transition: opacity .35s var(--ease);
}

.ft-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-3);
  border-color: var(--c-line-strong);
}

.ft-card:hover::before { opacity: 1; }

.ft-num {
  font-family: var(--f-sans);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-accent);
  margin-bottom: 16px;
  letter-spacing: 0.1em;
}

.ft-num em {
  font-style: normal;
  background: var(--c-accent-50);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
}

.ft-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--c-accent-50);
  color: var(--c-accent);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
}

.ft-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--c-ink);
  letter-spacing: -0.01em;
}

.ft-card h3 em {
  font-style: normal;
  color: var(--c-accent);
}

.ft-card p {
  color: var(--c-ink-2);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.ft-pts {
  border-top: 1px dashed var(--c-line);
  padding-top: 14px;
}

.ft-pts li {
  position: relative;
  padding-left: 18px;
  color: var(--c-ink-2);
  font-size: 13px;
  margin-bottom: 6px;
}

.ft-pts li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
}

@media (max-width: 900px) {
  .feature-grid { grid-template-columns: 1fr; }
}

/* ===================================================================
   截图通用样式（与 hero 卡片一致）
   =================================================================== */
.shot-shell {
  border-radius: 18px;
  overflow: hidden;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-4);
  position: relative;
}

.shot-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--c-line);
  background: var(--c-paper-2);
  font-size: 13px;
  color: var(--c-ink-2);
}

.shot-bar .d {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--c-paper-3);
}

.shot-bar .d1 { background: #FF6157; }
.shot-bar .d2 { background: #FFBD2E; }
.shot-bar .d3 { background: #28CA42; }

.shot-bar em { font-style: normal; font-weight: 500; }
.shot-bar-meta {
  margin-left: auto;
  font-size: 12px;
  color: var(--c-accent);
  background: var(--c-accent-50);
  padding: 3px 8px;
  border-radius: 6px;
}

.shot-shell img {
  width: 100%;
  display: block;
}

.anno {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-2);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--c-ink);
  font-weight: 500;
  z-index: 4;
}

.anno-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 4px var(--c-accent-soft);
}

.anno-1 { top: 18%; left: 6%; }
.anno-2 { top: 38%; right: 4%; }
.anno-3 { bottom: 18%; left: 12%; }

/* ===================================================================
   AI 自动回复
   =================================================================== */
.auto-reply { background: var(--c-paper); }

.ar-shot {
  max-width: 1100px;
  margin: 0 auto 60px;
}

.ar-bullets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 1100px;
  margin: 0 auto;
}

.ar-item {
  padding: 26px 22px;
  border-radius: 16px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.ar-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-2);
}

.ar-no {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-accent);
  background: var(--c-accent-50);
  padding: 3px 8px;
  border-radius: 6px;
  margin-bottom: 14px;
  letter-spacing: 0.08em;
}

.ar-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--c-ink);
}

.ar-item p {
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-ink-2);
}

@media (max-width: 900px) {
  .ar-bullets { grid-template-columns: repeat(2, 1fr); }
}

/* ===================================================================
   AGENTS · AI 员工
   =================================================================== */
.agents { background: var(--c-paper-2); }

.agents-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 80px;
}

.ag-card {
  position: relative;
  padding: 28px 24px 24px;
  border-radius: 20px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}

.ag-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 100px;
  background: var(--av);
  opacity: 0.10;
  z-index: 0;
}

.ag-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-3);
}

.ag-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}

.ag-av {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--av);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(15, 23, 41, 0.10);
}

.ag-no {
  font-size: 11px;
  color: var(--c-ink-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}

.ag-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-ink);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
  position: relative;
  z-index: 1;
}

.ag-job {
  font-size: 13px;
  color: var(--c-accent);
  font-weight: 600;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.ag-skill {
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-ink-2);
  position: relative;
  z-index: 1;
}

@media (max-width: 900px) {
  .agents-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 协作示意图 */
.collab {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
  align-items: center;
}

.collab-text h3 {
  font-size: 32px;
  line-height: 1.2;
  font-weight: 700;
  margin: 8px 0 16px;
  letter-spacing: -0.01em;
}

.collab-text p {
  color: var(--c-ink-2);
  font-size: 15px;
}

.collab-art {
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-3);
}

.collab-art img { width: 100%; display: block; }

@media (max-width: 900px) {
  .collab { grid-template-columns: 1fr; }
}

/* ===================================================================
   ENGINEER · AI 工程师
   =================================================================== */
.engineer { background: var(--c-paper); }

.eng-shot {
  max-width: 1100px;
  margin: 0 auto 60px;
}

.eng-bullets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  max-width: 1100px;
  margin: 0 auto 50px;
}

.eb-item {
  padding: 26px 22px;
  border-radius: 16px;
  background: var(--c-paper-2);
  border: 1px solid var(--c-line);
  transition: transform .3s var(--ease), background .3s var(--ease);
}

.eb-item:hover {
  transform: translateY(-3px);
  background: var(--c-paper);
  box-shadow: var(--sh-2);
}

.eb-no {
  font-size: 12px;
  font-weight: 700;
  color: var(--c-accent);
  background: var(--c-accent-50);
  padding: 3px 8px;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 14px;
}

.eb-item h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--c-ink);
}

.eb-item p {
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-ink-2);
}

.callout {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 22px 26px;
  border-radius: 16px;
  background: var(--c-accent-50);
  border: 1px solid var(--c-accent-100);
}

.callout-icon {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--c-accent);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
}

.callout-text h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--c-ink);
}

.callout-text p {
  font-size: 13px;
  color: var(--c-ink-2);
  line-height: 1.65;
}

@media (max-width: 900px) {
  .eng-bullets { grid-template-columns: repeat(2, 1fr); }
}

/* ===================================================================
   SMART-OPS · 智能运营
   =================================================================== */
.smart-ops { background: var(--c-paper-2); }

.so-shot {
  max-width: 1100px;
  margin: 0 auto 60px;
}

.so-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 60px;
}

.so-card {
  padding: 28px 24px;
  border-radius: 18px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.so-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-2);
}

.so-trigger {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.so-trigger-icon {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--c-accent-50);
  color: var(--c-accent);
  display: inline-flex; align-items: center; justify-content: center;
}

.so-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--c-ink);
}

.so-card p {
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-ink-2);
}

.so-quote {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  padding: 30px 0;
}

.fq-mark {
  display: inline-block;
  font-size: 60px;
  line-height: 0.6;
  color: var(--c-accent);
  margin-bottom: 12px;
  font-family: Georgia, serif;
}

.so-quote p {
  font-size: 22px;
  line-height: 1.5;
  font-weight: 500;
  color: var(--c-ink);
  letter-spacing: -0.01em;
}

.so-quote em {
  font-style: normal;
  color: var(--c-accent);
  font-weight: 700;
}

@media (max-width: 900px) {
  .so-grid { grid-template-columns: 1fr; }
}

/* ===================================================================
   OPS · 运营配置
   =================================================================== */
.ops { background: var(--c-paper); }

.ops-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.op-card {
  padding: 36px 30px;
  border-radius: var(--r-3);
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}

.op-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-3);
}

.op-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--c-accent);
  background: var(--c-accent-50);
  padding: 3px 10px;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 16px;
  letter-spacing: 0.08em;
}

.op-num em { font-style: normal; }

.op-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--c-ink);
  letter-spacing: -0.01em;
}

.op-card h3 em {
  font-style: normal;
  color: var(--c-accent);
}

.op-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink-2);
  margin-bottom: 16px;
}

.op-pts {
  border-top: 1px dashed var(--c-line);
  padding-top: 14px;
}

.op-pts li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  color: var(--c-ink-2);
  margin-bottom: 6px;
}

.op-pts li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
}

@media (max-width: 900px) {
  .ops-grid { grid-template-columns: 1fr; }
}

/* ===================================================================
   MCP · 工具域
   =================================================================== */
.mcp {
  background: var(--c-paper-2);
}

.mcp-shot {
  max-width: 1100px;
  margin: 0 auto 60px;
}

.mcp-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: -30px 0 50px;
}

.mcp-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  font-size: 12px;
  font-weight: 500;
  color: var(--c-ink);
  font-family: var(--f-mono);
}

.mcp-badge::before {
  content: "weiclaw__";
  color: var(--c-accent);
  font-weight: 600;
}

.mcp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.mcp-card {
  padding: 36px 30px;
  border-radius: var(--r-3);
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}

.mcp-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-3);
}

.mcp-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--c-accent);
  background: var(--c-accent-50);
  padding: 3px 10px;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 16px;
}

.mcp-num em { font-style: normal; }

.mcp-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--c-ink);
  letter-spacing: -0.01em;
}

.mcp-card h3 em { font-style: normal; color: var(--c-accent); }

.mcp-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink-2);
  margin-bottom: 16px;
}

.mcp-pts {
  border-top: 1px dashed var(--c-line);
  padding-top: 14px;
}

.mcp-pts li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  color: var(--c-ink-2);
  margin-bottom: 6px;
}

.mcp-pts li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
}

@media (max-width: 900px) {
  .mcp-grid { grid-template-columns: 1fr; }
}

/* ===================================================================
   GALLERY · 界面画廊
   =================================================================== */
.gallery { background: var(--c-paper); padding-bottom: 80px; }

.gallery-rail {
  position: relative;
  overflow: hidden;
  padding: 20px 0 40px;
  margin: 0 calc(-1 * var(--gutter));
}

.gr-track {
  display: flex;
  gap: 20px;
  padding: 0 var(--gutter);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--c-line-strong) transparent;
}

.gr-track::-webkit-scrollbar { height: 6px; }
.gr-track::-webkit-scrollbar-thumb { background: var(--c-line-strong); border-radius: 3px; }
.gr-track::-webkit-scrollbar-track { background: transparent; }

.gr-card {
  flex: 0 0 360px;
  scroll-snap-align: start;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}

.gr-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-3);
}

.grc-frame { padding: 8px; }
.grc-frame img { width: 100%; border-radius: 10px; display: block; }

.gr-card figcaption {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--c-line);
}

.gr-card figcaption b {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-ink);
  margin-bottom: 2px;
}

.gr-card figcaption span {
  font-size: 12px;
  color: var(--c-ink-3);
}

.gr-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 400px;
  margin: 24px auto 0;
}

.gr-btn {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  color: var(--c-ink-2);
  font-size: 18px;
  font-weight: 600;
  display: inline-flex; align-items: center; justify-content: center;
  transition: all .25s var(--ease);
}

.gr-btn:hover {
  background: var(--c-accent);
  color: #fff;
  border-color: var(--c-accent);
}

.gr-progress {
  flex: 1;
  height: 4px;
  background: var(--c-paper-3);
  border-radius: 2px;
  overflow: hidden;
}

.gr-progress-bar {
  display: block;
  height: 100%;
  width: 25%;
  background: linear-gradient(90deg, var(--c-accent-400), var(--c-violet));
  border-radius: 2px;
}

/* ===================================================================
   SCENES · 适用场景
   =================================================================== */
.scenes { background: var(--c-paper-2); }

.scenes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.sc-item {
  padding: 24px 22px;
  border-radius: 16px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.sc-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-2);
}

.sc-item b {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-accent);
  background: var(--c-accent-50);
  padding: 3px 9px;
  border-radius: 6px;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.sc-item h5 {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-ink);
  margin-bottom: 4px;
}

.sc-item p {
  font-size: 13px;
  color: var(--c-ink-2);
  line-height: 1.6;
}

@media (max-width: 900px) {
  .scenes-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===================================================================
   DOWNLOAD · 下载收束
   =================================================================== */
.download {
  background: var(--c-paper);
  padding: 80px 0 100px;
}

.dl-wrap {
  position: relative;
  padding: 60px;
  border-radius: var(--r-4);
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(46, 91, 255, 0.10), transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(107, 91, 255, 0.10), transparent 60%),
    linear-gradient(135deg, #F6F8FB 0%, #FAFBFD 100%);
  border: 1px solid var(--c-line);
  display: block;
  overflow: hidden;
}

.dl-wrap::before {
  content: "";
  position: absolute;
  top: -2px; left: -2px; right: -2px;
  height: 4px;
  background: linear-gradient(90deg, var(--c-accent-400), var(--c-violet), var(--c-cyan));
}

.dl-left h2 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  font-weight: 700;
  margin: 8px 0 14px;
  letter-spacing: -0.02em;
}

.dl-left h2 em {
  font-style: normal;
  background: linear-gradient(135deg, #4F7BFF 0%, #2E5BFF 55%, #6B5BFF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.dl-lede {
  font-size: 16px;
  color: var(--c-ink-2);
  margin-bottom: 28px;
  line-height: 1.65;
}

.dl-cta {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dl-tip {
  font-size: 13px;
  color: var(--c-ink-3);
}

@media (max-width: 900px) {
  .dl-wrap { padding: 36px 24px; }
}

/* ===================================================================
   FAQ
   =================================================================== */
.faq { padding: 80px 0 60px; background: var(--c-paper-2); }

.faq-list {
  margin-top: 30px;
  border-top: 1px solid var(--c-line);
}

.faq-item {
  border-bottom: 1px solid var(--c-line);
}

.faq-item summary {
  padding: 22px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-ink);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: color .25s var(--ease);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px; height: 24px;
  border-radius: 8px;
  background: var(--c-accent-50);
  color: var(--c-accent);
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
  transition: background .25s var(--ease), color .25s var(--ease);
}

.faq-item[open] summary::before {
  content: "−";
  background: var(--c-accent);
  color: #fff;
}

.faq-item summary:hover { color: var(--c-accent); }

.faq-item p {
  padding: 0 0 22px 40px;
  color: var(--c-ink-2);
  font-size: 14px;
  line-height: 1.75;
  max-width: 820px;
}

.faq-item p strong { color: var(--c-ink); font-weight: 600; }

.faq-item p a { color: var(--c-accent); text-decoration: underline; }

/* ===================================================================
   FOOTER
   =================================================================== */
.foot {
  background: var(--c-paper);
  border-top: 1px solid var(--c-line);
  padding: 60px 0 30px;
}

.foot-in {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 56px;
  margin-bottom: 40px;
}

.foot-brand p {
  margin-top: 12px;
  color: var(--c-ink-2);
  font-size: 14px;
  max-width: 320px;
}

.foot-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.fl-col h6 {
  font-size: 12px;
  font-weight: 700;
  color: var(--c-ink);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.fl-col a {
  display: block;
  font-size: 14px;
  color: var(--c-ink-2);
  margin-bottom: 8px;
  transition: color .25s var(--ease);
}

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

.fl-company { font-size: 14px; color: var(--c-ink); margin-bottom: 10px; }

.fl-wechat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-ink-2);
  margin-bottom: 12px;
}

.fl-wechat-label {
  padding: 2px 8px;
  background: var(--c-accent-50);
  color: var(--c-accent);
  border-radius: 4px;
  font-weight: 600;
  font-size: 11px;
}

.fl-qr {
  text-align: center;
  width: 104px;
  padding: 6px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  border-radius: 10px;
}

.fl-qr img { width: 100%; border-radius: 6px; }
.fl-qr figcaption { font-size: 11px; color: var(--c-ink-3); margin-top: 4px; }

.foot-bot {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding-top: 30px;
  border-top: 1px solid var(--c-line);
  font-size: 12px;
  color: var(--c-ink-3);
  flex-wrap: wrap;
  text-align: center;
}

.foot-rule {
  width: 1px; height: 12px;
  background: var(--c-line-strong);
}

.foot-beian { color: var(--c-ink-3); }
.foot-beian:hover { color: var(--c-accent); }
.foot-tag { color: var(--c-accent); }

@media (max-width: 900px) {
  .foot-in { grid-template-columns: 1fr; gap: 36px; }
  .foot-links { grid-template-columns: repeat(2, 1fr); }
}