/* Weilanx Base Table landing
   主题:跟随系统亮/暗;强调色只用 Logo 蓝
   圆角规则:按钮全圆角,截图框/格子 16px,kbd/代码块 8px */

:root {
  --bg: #f7f8fa;
  --bg-2: #eef1f5;
  --surface: #ffffff;
  --text: #14161b;
  --text-2: #4a505c;
  --text-3: #6b7280;
  --line: rgb(20 22 27 / 0.09);
  --accent: #2563eb;
  --accent-ink: #ffffff;
  --accent-soft: rgb(37 99 235 / 0.08);
  --shadow: 0 1px 2px rgb(30 41 80 / 0.06), 0 24px 60px -24px rgb(30 41 80 / 0.28);
  --code-bg: #10131a;
  --r-frame: 16px;
  --r-small: 8px;
  --font: "Geist Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0d10;
    --bg-2: #121419;
    --surface: #16181e;
    --text: #eceef2;
    --text-2: #a8afbc;
    --text-3: #8a91a0;
    --line: rgb(255 255 255 / 0.08);
    --accent: #4f8dff;
    --accent-ink: #08101f;
    --accent-soft: rgb(79 141 255 / 0.1);
    --shadow: 0 1px 0 rgb(255 255 255 / 0.04) inset, 0 30px 80px -30px rgb(0 0 0 / 0.7);
    --code-bg: #0f1116;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  overflow-x: clip;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; letter-spacing: -0.02em; line-height: 1.15; font-weight: 600; }
p { margin: 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  transition: transform 0.2s var(--ease), background-color 0.2s, border-color 0.2s;
}
.btn i { font-size: 18px; }
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 88%, var(--text)); }
.btn-ghost { border: 1px solid var(--line); color: var(--text); background: var(--surface); }
.btn-ghost:hover { border-color: color-mix(in srgb, var(--text) 25%, transparent); }
.btn-sm { height: 36px; padding: 0 16px; font-size: 14px; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 64px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.01em; }
.brand img { border-radius: 7px; }
.nav-links { display: flex; gap: 28px; font-size: 14px; color: var(--text-2); }
.nav-links a:hover { color: var(--text); }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.lang, .icon-btn {
  height: 36px;
  min-width: 36px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text-2);
  font: 500 13px var(--font);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.icon-btn { padding: 0; font-size: 18px; }
.lang:hover, .icon-btn:hover { color: var(--text); border-color: color-mix(in srgb, var(--text) 25%, transparent); }

/* ---------- Hero ---------- */
.hero {
  max-width: 1280px;
  margin: 0 auto;
  padding: 72px 24px 96px;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 56px;
  align-items: center;
  min-height: min(calc(100dvh - 64px), 860px);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 500 13px var(--mono);
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.hero h1 { font-size: clamp(40px, 5.2vw, 64px); letter-spacing: -0.035em; line-height: 1.1; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-sub { margin-top: 22px; font-size: 18px; color: var(--text-2); max-width: 34ch; }
.hero-ctas { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 12px; }

.hero-visual { position: relative; margin-right: -12vw; }
.frame {
  margin: 0;
  border-radius: var(--r-frame);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.frame-hero img { width: 100%; }
.frame-float {
  position: absolute;
  left: -48px;
  bottom: -56px;
  width: 34%;
  max-width: 260px;
}

/* ---------- 通用 section ---------- */
section { position: relative; }
.section-title { font-size: clamp(30px, 3.6vw, 44px); letter-spacing: -0.03em; max-width: 20ch; }
.section-sub { margin-top: 16px; font-size: 17px; color: var(--text-2); max-width: 56ch; }

/* ---------- Bento ---------- */
.features {
  max-width: 1280px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}
.bento {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-auto-rows: minmax(0, auto);
  gap: 16px;
}
.cell {
  position: relative;
  border-radius: var(--r-frame);
  border: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.cell h3 { font-size: 20px; }
.cell p { margin-top: 8px; color: var(--text-2); font-size: 15px; max-width: 44ch; }
.cell-shot {
  border-radius: 10px;
  border: 1px solid var(--line);
  margin-top: auto;
}
.cell-group { grid-column: span 4; grid-row: span 2; }
.cell-group .cell-shot { margin-right: -28px; margin-bottom: -28px; border-radius: 10px 0 0 0; width: calc(100% + 28px); max-width: none; }
.cell-filter {
  grid-column: span 2;
  background: linear-gradient(160deg, var(--accent-soft), transparent 60%), var(--surface);
}
.cell-filter .cell-shot { width: 100%; margin-top: auto; box-shadow: var(--shadow); }
.cell-types { grid-column: span 2; }
.type-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 12px;
  font-size: 14px;
  color: var(--text-2);
}
.type-list li { display: flex; align-items: center; gap: 8px; }
.type-list i { font-size: 18px; color: var(--accent); }
.cell-keys {
  grid-column: span 3;
  background:
    radial-gradient(120% 90% at 100% 0%, var(--accent-soft), transparent 55%),
    var(--bg-2);
}
.keys { margin: auto 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
.keys div { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.keys dt { color: var(--text-2); font-size: 14px; }
.keys dd { margin: 0; display: flex; gap: 4px; }
kbd {
  min-width: 28px;
  height: 28px;
  padding: 0 7px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-small);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  background: var(--surface);
  font: 500 13px var(--mono);
  color: var(--text);
}
.cell-select { grid-column: span 3; }
.cell-select .cell-shot { height: 170px; object-fit: cover; object-position: left 40%; }

/* ---------- 格式:切换面板 ---------- */
.format {
  max-width: 1080px;
  margin: 0 auto;
  padding: 96px 24px;
  text-align: center;
}
.format .section-title, .format .section-sub { margin-left: auto; margin-right: auto; }
.switch {
  margin: 40px auto 24px;
  display: inline-flex;
  padding: 4px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
}
.switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--text-2);
  font: 500 14px var(--font);
  cursor: pointer;
  transition: background-color 0.25s var(--ease), color 0.25s;
}
.switch-btn i { font-size: 17px; }
.switch-btn.is-active { background: var(--accent); color: var(--accent-ink); }
.panes { text-align: left; display: grid; }
.pane { grid-area: 1 / 1; }
.pane[hidden] { display: none; }
.pane-code { background: var(--code-bg); border-color: rgb(255 255 255 / 0.08); color: #d6dbe4; }
.code-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px 10px 18px;
  border-bottom: 1px solid rgb(255 255 255 / 0.08);
  font: 13px var(--mono);
  color: #8a93a6;
}
.pane-code pre {
  margin: 0;
  padding: 22px 24px 26px;
  overflow-x: auto;
  font: 13.5px/1.75 var(--mono);
}
.pane-code .k { color: #8cb4ff; }
.pane-code .s { color: #a6d98c; }
.pane-code .n { color: #f0b46a; }
.pane-code .b { color: #e48ad6; }
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 10px;
  border-radius: var(--r-small);
  border: 1px solid rgb(255 255 255 / 0.12);
  background: transparent;
  color: inherit;
  font: 500 12px var(--font);
  cursor: pointer;
  transition: background-color 0.2s, transform 0.15s var(--ease);
}
.copy-btn:hover { background: rgb(255 255 255 / 0.06); }
.copy-btn:active { transform: scale(0.95); }
.copy-btn.is-done { color: #a6d98c; }
.format-facts {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 32px;
  color: var(--text-2);
  font-size: 15px;
}
.format-facts li { display: flex; align-items: center; gap: 8px; }
.format-facts i { color: var(--accent); font-size: 19px; }

/* ---------- 安装 ---------- */
.install {
  max-width: 1280px;
  margin: 0 auto;
  padding: 96px 24px;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 64px;
  align-items: start;
}
.install-head { position: sticky; top: 112px; }
.install-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 40px; }
.install-steps li { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 20px; }
.step-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--accent);
  background: var(--accent-soft);
}
.install-steps h3 { font-size: 20px; margin-top: 8px; }
.install-steps p { margin-top: 8px; color: var(--text-2); }
.install-steps p a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.cmd {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 10px 10px 16px;
  border-radius: 12px;
  background: var(--code-bg);
  color: #d6dbe4;
  border: 1px solid var(--line);
}
.cmd code { font: 13.5px var(--mono); overflow-x: auto; white-space: nowrap; flex: 1; }
.cmd .copy-btn { flex: none; width: 32px; padding: 0; justify-content: center; }

/* ---------- 收尾 ---------- */
.closing {
  max-width: 1280px;
  margin: 32px auto 0;
  padding: 96px 24px 112px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-top: 1px solid var(--line);
}
.closing img { border-radius: 18px; margin-bottom: 28px; box-shadow: var(--shadow); }
.closing h2 { font-size: clamp(30px, 3.6vw, 44px); letter-spacing: -0.03em; }
.closing p { margin-top: 12px; color: var(--text-2); font-size: 17px; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); }
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  color: var(--text-3);
}
.footer .brand { color: var(--text); font-size: 14px; }
.footer nav { display: flex; gap: 24px; }
.footer nav a:hover { color: var(--text); }
.footer p { margin-left: auto; }

/* ---------- 动效:首屏入场 + 滚动显现,尊重减少动态 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .hero-copy > *, .hero-visual {
    animation: rise 0.9s var(--ease) both;
  }
  .hero-copy > :nth-child(2) { animation-delay: 0.06s; }
  .hero-copy > :nth-child(3) { animation-delay: 0.12s; }
  .hero-copy > :nth-child(4) { animation-delay: 0.18s; }
  .hero-visual { animation-delay: 0.2s; animation-duration: 1.1s; }
  .frame-float { animation: rise 1s var(--ease) 0.55s both; }

  .js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
  .js .reveal.is-in { opacity: 1; transform: none; }

  .cell, .frame-hero { transition: transform 0.4s var(--ease), border-color 0.3s; }
  .cell:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); }
  .pane.is-active { animation: fade 0.45s var(--ease); }
}
@keyframes rise { from { opacity: 0; transform: translateY(28px); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; min-height: 0; padding-top: 56px; gap: 48px; }
  .hero-visual { margin-right: 0; }
  .frame-float { left: auto; right: -8px; bottom: -40px; width: 30%; }
  .cell-group { grid-column: span 6; grid-row: auto; }
  .cell-filter, .cell-types { grid-column: span 3; }
  .install { grid-template-columns: 1fr; gap: 40px; }
  .install-head { position: static; }
}
@media (max-width: 767px) {
  .nav-links { display: none; }
  .nav-inner { gap: 12px; padding: 0 16px; }
  .brand span { display: none; }
  .hero, .features, .format, .install, .closing { padding-left: 16px; padding-right: 16px; }
  .hero { padding-top: 40px; padding-bottom: 72px; }
  .hero-sub { font-size: 17px; }
  .frame-float { display: none; }
  .bento { grid-template-columns: 1fr; }
  .cell-group, .cell-filter, .cell-types, .cell-keys, .cell-select { grid-column: auto; }
  .keys { grid-template-columns: 1fr; }
  .features, .format, .install { padding-top: 72px; padding-bottom: 72px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 14px; }
  .footer p { margin-left: 0; }
}

/* 中文排版:标点不落单、词不拆开、标题字号略收 */
h1, h2, .hero-sub, .section-sub { text-wrap: balance; }
:lang(zh-CN) h1, :lang(zh-CN) h2 { word-break: keep-all; }
:lang(zh-CN) .hero h1 { font-size: clamp(36px, 4.4vw, 56px); letter-spacing: -0.01em; line-height: 1.18; }
:lang(zh-CN) .section-title { max-width: 18em; letter-spacing: -0.01em; }

/* ======================================================================
   背景层次:首屏光晕 + 渐隐网格、截图辉光、全局颗粒、Agent 点阵色带、收尾光晕
   全部只用 Logo 蓝的深浅,避免多色霓虹
   ====================================================================== */
:root {
  --glow-1: rgb(37 99 235 / 0.16);
  --glow-2: rgb(56 189 248 / 0.12);
  --grid-line: rgb(20 22 27 / 0.055);
  --grain-opacity: 0.035;
}
@media (prefers-color-scheme: dark) {
  :root {
    --glow-1: rgb(59 130 246 / 0.26);
    --glow-2: rgb(56 189 248 / 0.12);
    --grid-line: rgb(255 255 255 / 0.06);
    --grain-opacity: 0.05;
  }
}

/* 全局颗粒:固定层、不随滚动重绘 */
.grain {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* 首屏:两团低饱和光晕 + 网格,网格向四周渐隐 */
.hero { position: relative; isolation: isolate; }
.hero-bg {
  position: absolute;
  z-index: -1;
  inset: -64px -50vw 0;
  pointer-events: none;
  background:
    radial-gradient(42% 55% at 72% 38%, var(--glow-1), transparent 70%),
    radial-gradient(30% 40% at 92% 70%, var(--glow-2), transparent 70%),
    radial-gradient(28% 36% at 18% 22%, color-mix(in srgb, var(--glow-1) 60%, transparent), transparent 70%);
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  background-position: center top;
  -webkit-mask-image: radial-gradient(60% 70% at 50% 35%, #000 30%, transparent 80%);
  mask-image: radial-gradient(60% 70% at 50% 35%, #000 30%, transparent 80%);
}
/* 截图背后的柔光,让截图从背景里浮出来 */
.hero-visual::before {
  content: "";
  position: absolute;
  inset: 8% 4% -6% 6%;
  z-index: -1;
  border-radius: 40px;
  background: radial-gradient(closest-side, var(--glow-1), transparent);
  filter: blur(40px);
}
.frame-hero { box-shadow: var(--shadow), 0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent); }

/* 区块之间的细光线分隔 */
.features::before, .format::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: min(720px, 80%);
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--accent) 45%, transparent), transparent);
}

/* ---------- For Agents ---------- */
.agent {
  position: relative;
  isolation: isolate;
  padding: 104px 24px;
  background:
    radial-gradient(50% 80% at 85% 50%, var(--glow-1), transparent 70%),
    var(--bg-2);
  border-block: 1px solid var(--line);
  overflow: hidden;
}
.agent::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(var(--grid-line) 1.2px, transparent 1.2px);
  background-size: 22px 22px;
  -webkit-mask-image: linear-gradient(90deg, #000, transparent 70%);
  mask-image: linear-gradient(90deg, #000, transparent 70%);
}
.agent-inner {
  max-width: 1232px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 64px;
  align-items: center;
}
.eyebrow-plain { margin-bottom: 20px; font-family: var(--font); font-weight: 600; }
.eyebrow-plain i { font-size: 15px; }
.agent-points { list-style: none; margin: 28px 0 0; padding: 0; display: grid; gap: 12px; color: var(--text-2); font-size: 15px; }
.agent-points li { display: flex; align-items: center; gap: 10px; }
.agent-points i { color: var(--accent); font-size: 19px; flex: none; }
.agent-points a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.text-link {
  margin-top: 28px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: border-color 0.2s, gap 0.25s var(--ease);
}
.text-link:hover { border-color: var(--text); gap: 9px; }

.agent-card {
  border-radius: var(--r-frame);
  background: var(--code-bg);
  border: 1px solid rgb(255 255 255 / 0.09);
  box-shadow: var(--shadow), 0 0 0 1px color-mix(in srgb, var(--accent) 22%, transparent), 0 40px 120px -40px var(--glow-1);
  color: #d6dbe4;
  overflow: hidden;
}
.agent-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 10px 10px 12px;
  border-bottom: 1px solid rgb(255 255 255 / 0.08);
  background: rgb(255 255 255 / 0.02);
}
.agent-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 32px;
  padding: 0 14px;
  border-radius: 999px;
  border: 0;
  background: transparent;
  color: #8a93a6;
  font: 500 13px var(--font);
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
}
.agent-tab i { font-size: 16px; }
.agent-tab:hover { color: #d6dbe4; }
.agent-tab.is-active { background: rgb(255 255 255 / 0.08); color: #fff; }
.agent-copy-btn { margin-left: auto; }
.agent-pane {
  margin: 0;
  padding: 24px 26px 28px;
  min-height: 300px;
  font: 13.5px/1.75 var(--mono);
  white-space: pre-wrap;
  word-break: break-word;
}
.agent-pane[hidden] { display: none; }
.agent-pane .c { color: #6b7488; }
@media (prefers-reduced-motion: no-preference) {
  .agent-pane.is-active { animation: fade 0.4s var(--ease); }
}

/* 收尾光晕 */
.closing { position: relative; isolation: isolate; overflow: hidden; }
.closing-glow {
  position: absolute;
  z-index: -1;
  left: 50%;
  top: 40px;
  width: 640px;
  height: 420px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, var(--glow-1), transparent);
  filter: blur(20px);
  pointer-events: none;
}

@media (max-width: 1024px) {
  .agent-inner { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 767px) {
  .agent { padding: 72px 16px; }
  .agent-pane { padding: 20px 18px 22px; font-size: 12.5px; min-height: 0; }
  .agent-tab { padding: 0 10px; }
}