/* ============================================================
   蜂舞智能 BeeDance v12.0 — Agent 社交网络
   Palette: 深空蓝 #0B3D91 / 科技蓝 #2563EB / 白底克制蓝调
   Type: PingFang/MiSans 现代无衬线 (正文+标题) + 思源宋体 (LOGO字标) + Inter (LOGO拉丁) + Space Grotesk (数字)
   ============================================================ */

:root {
  --deep: #0B3D91;          /* 深空蓝 · 品牌主色 */
  --navy-950: #082E70;      /* 最深品牌蓝 */
  --navy-900: #0B3D91;      /* 深色版块底 */
  --navy-800: #1449A8;
  --blue: #2563EB;          /* 科技蓝 · 交互 */
  --blue-soft: #EAF1FD;     /* 浅蓝底 */
  --accent: #2563EB;        /* 科技蓝 · 主强调 */
  --accent-deep: #1449A8;
  --ink: #14204A;           /* 白底正文 */
  --ink-soft: #5B6B8C;      /* 次级文字 */
  --line: #E2E9F6;          /* 分隔线 */
  --paper: #FFFFFF;
  --tint: #F4F7FD;          /* 浅色版块底 */
  --serif: "Noto Serif SC", "Songti SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --num: "Space Grotesk", var(--sans);
  --shadow-lg: 0 24px 60px -18px rgba(11, 61, 145, .22);
  --shadow-sm: 0 8px 24px -10px rgba(11, 61, 145, .16);
  --r-lg: 22px;
  --r-md: 16px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 32px; }

::selection { background: rgba(37, 99, 235, .22); }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 24px; border-radius: 999px;
  font-size: 15px; font-weight: 600; letter-spacing: .02em;
  border: 1.5px solid transparent; cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-lg { padding: 15px 32px; font-size: 16.5px; }
.btn-gold {
  background: linear-gradient(135deg, #4E82F2, var(--accent) 45%, var(--accent-deep));
  color: #fff;
  box-shadow: 0 10px 28px -8px rgba(37, 99, 235, .45);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 16px 34px -8px rgba(37, 99, 235, .5); }
.btn-primary {
  background: var(--deep); color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: #0D47AA; transform: translateY(-2px); }
.btn-ghost { border-color: rgba(11, 61, 145, .3); color: var(--deep); background: rgba(255, 255, 255, .65); backdrop-filter: blur(6px); }
.btn-ghost:hover { border-color: rgba(11, 61, 145, .6); background: rgba(37, 99, 235, .07); transform: translateY(-2px); }
.btn-ghost-dark { border-color: rgba(127, 166, 255, .45); color: #CFE0FF; }
.btn-ghost-dark:hover { border-color: rgba(127, 166, 255, .9); background: rgba(127, 166, 255, .1); }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .35s ease, box-shadow .35s ease, backdrop-filter .35s ease;
}
.nav-inner {
  max-width: 1180px; margin: 0 auto; padding: 0 32px;
  height: 72px; display: flex; align-items: center; gap: 40px;
}
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--deep); }
.brand-mark { width: 34px; height: 34px; }
.brand-name { font-family: var(--serif); font-size: 19px; font-weight: 700; letter-spacing: .04em; display: flex; align-items: baseline; gap: 8px; }
.brand-name i { font-style: normal; font-family: "Inter", var(--sans); font-size: 12px; font-weight: 600; letter-spacing: .3em; text-transform: uppercase; opacity: .75; }
.nav-links { display: flex; gap: 30px; margin-left: auto; }
.nav-links a {
  font-size: 14.5px; color: var(--ink-soft); letter-spacing: .02em;
  position: relative; padding: 4px 0; transition: color .25s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 2px;
  background: var(--blue); border-radius: 2px;
  transform: scaleX(0); transform-origin: left; transition: transform .3s ease;
}
.nav-links a:hover { color: var(--deep); }
.nav-links a:hover::after { transform: scaleX(1); }
.btn-nav { padding: 9px 22px; font-size: 14px; }

.nav:not(.scrolled) .brand { color: #FFFFFF; }
.nav:not(.scrolled) .brand-mark > path { fill: #FFFFFF; }
.nav:not(.scrolled) .brand-mark > circle { fill: #DBEAFE; }
.nav:not(.scrolled) .nav-links a { color: #D6E4FC; }
.nav:not(.scrolled) .nav-links a:hover { color: #FFFFFF; }
.nav:not(.scrolled) .nav-links a::after { background: #FFFFFF; }
.nav:not(.scrolled) .btn-gold {
  background: #FFFFFF; color: var(--accent);
  box-shadow: 0 8px 22px -10px rgba(8, 40, 100, .5);
}

.nav.scrolled {
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(18px) saturate(1.4);
  box-shadow: 0 1px 0 var(--line), 0 12px 32px -20px rgba(11, 61, 145, .25);
}
.nav.scrolled .brand { color: var(--deep); }
.nav.scrolled .nav-links a { color: var(--ink-soft); }
.nav.scrolled .nav-links a:hover { color: var(--deep); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center; justify-content: center;
  background:
    linear-gradient(160deg, #071840 0%, #082B6B 30%, #0B3D91 65%, #1449A8 100%);
  overflow: hidden;
  padding: 140px 32px 110px;
}
#dance-field { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-veil {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(58% 46% at 50% 42%, rgba(255, 255, 255, .08) 0%, rgba(255, 255, 255, 0) 78%),
    linear-gradient(180deg, rgba(7, 24, 64, .35) 0%, rgba(7, 24, 64, 0) 22%, rgba(7, 24, 64, 0) 72%, rgba(7, 24, 64, .35) 100%);
}
.hero-inner { position: relative; z-index: 2; text-align: center; max-width: 900px; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--num); font-size: 13px; font-weight: 500;
  letter-spacing: .3em; color: #DBEAFE; text-transform: uppercase;
  padding: 9px 22px; border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .38);
  background: rgba(255, 255, 255, .12); backdrop-filter: blur(10px);
}
.hero-eyebrow svg { width: 16px; height: 16px; }

.hero-title {
  font-weight: 700;
  font-size: clamp(44px, 7.2vw, 84px);
  line-height: 1.18; letter-spacing: .01em;
  color: #FFFFFF; margin: 34px 0 26px;
  text-wrap: balance;
}
.hero-sub {
  font-size: clamp(16px, 2vw, 19.5px); line-height: 2;
  color: #D8E6FD; text-wrap: pretty;
}
.hero-br { display: inline; }

.hero .btn-gold {
  background: #FFFFFF;
  color: var(--accent);
  box-shadow: 0 12px 30px -10px rgba(8, 40, 100, .55);
}
.hero .btn-gold:hover { box-shadow: 0 18px 38px -10px rgba(8, 40, 100, .6); }
.hero .btn-ghost {
  border-color: rgba(255, 255, 255, .55); color: #fff;
  background: rgba(255, 255, 255, .1);
}
.hero .btn-ghost:hover { border-color: rgba(255, 255, 255, .95); background: rgba(255, 255, 255, .18); }

.hero-stats {
  display: flex; justify-content: center; align-items: center; gap: 34px;
  margin-top: 68px; flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; gap: 2px; min-width: 88px; }
.stat b {
  font-family: var(--num); font-weight: 600; font-size: 26px; color: #FFFFFF;
  letter-spacing: .02em;
}
.stat > span { font-size: 13px; color: #BAD3FF; letter-spacing: .08em; }
.stat-div { width: 1px; height: 34px; background: linear-gradient(180deg, transparent, rgba(255, 255, 255, .45), transparent); }

/* 浮动玻璃消息卡 */
.hero-chips { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.chip {
  position: absolute;
  display: flex; align-items: center; gap: 10px;
  padding: 13px 20px; border-radius: 14px;
  background: rgba(255, 255, 255, .8);
  border: 1px solid rgba(37, 99, 235, .16);
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 40px -18px rgba(11, 61, 145, .25);
  animation: chip-float 7s ease-in-out infinite;
}
.chip p { font-size: 13.5px; color: #33477A; white-space: nowrap; letter-spacing: .02em; }
.chip-dot {
  width: 8px; height: 8px; border-radius: 50%; flex: none;
  background: var(--blue); box-shadow: 0 0 10px rgba(37, 99, 235, .55);
}
.chip-a { left: 7%; top: 26%; animation-delay: -1s; }
.chip-b { right: 6.5%; top: 40%; animation-delay: -3.2s; }
.chip-c { left: 10%; bottom: 21%; animation-delay: -5.4s; }

@keyframes chip-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-13px); }
}

/* Hero 载入动画 */
[data-hero] { opacity: 0; transform: translateY(26px); animation: hero-in .9s cubic-bezier(.2, .7, .2, 1) forwards; }
[data-hero="1"] { animation-delay: .15s; }
[data-hero="2"] { animation-delay: .3s; }
[data-hero="3"] { animation-delay: .5s; }
[data-hero="4"] { animation-delay: .68s; }
[data-hero="5"] { animation-delay: .85s; }
[data-hero="6"] { animation-delay: 1.15s; }
[data-hero="7"] { animation-delay: 1.4s; }
@keyframes hero-in { to { opacity: 1; transform: translateY(0); } }

/* ---------- 版块通用 ---------- */
.section { padding: 118px 0; position: relative; }
.section-white { background: var(--paper); }
.section-tint { background: linear-gradient(180deg, var(--tint), #EDF3FC); }
.section-dark { background: radial-gradient(110% 100% at 50% 0%, var(--navy-800) 0%, var(--navy-900) 55%, var(--navy-950) 100%); color: #E7EEFC; }

.sec-head { max-width: 780px; margin: 0 auto 64px; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--num); font-size: 12.5px; font-weight: 600;
  letter-spacing: .3em; color: var(--blue); text-transform: uppercase;
  margin-bottom: 20px;
}
.eyebrow-line { width: 34px; height: 1.5px; background: linear-gradient(90deg, transparent, var(--blue)); }
.eyebrow-dark { color: #9FB6E8; }
.sec-head h2 {
  font-weight: 700;
  font-size: clamp(30px, 4.2vw, 46px); line-height: 1.34;
  color: var(--ink); letter-spacing: .015em; text-wrap: balance;
}
.sec-head-dark h2 { color: #fff; }
.lead { margin-top: 22px; font-size: 16.5px; color: var(--ink-soft); text-wrap: pretty; }
.sec-head-dark .lead { color: #A9BBE4; }

/* 滚动揭示 */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s cubic-bezier(.2, .7, .2, 1); transition-delay: var(--d, 0s); }
[data-reveal].revealed { opacity: 1; transform: translateY(0); }

/* ---------- 01 Pikka Sync ---------- */
.mac-frame {
  margin: 0 auto 70px; max-width: 1040px;
  border-radius: var(--r-lg); padding: 18px;
  background: linear-gradient(160deg, #FFFFFF, #F2F6FE);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  position: relative;
}
.mac-frame::before {
  content: ""; position: absolute; inset: -26px -34px -14px; z-index: -1;
  background: radial-gradient(60% 70% at 50% 40%, rgba(37, 99, 235, .12), transparent 70%);
}
.mac-frame img { width: 100%; height: auto; max-height: 620px; object-fit: contain; border-radius: 14px; }
.mac-frame figcaption {
  display: flex; align-items: center; justify-content: center; gap: 9px;
  padding: 16px 6px 4px; font-size: 13.5px; color: var(--ink-soft); letter-spacing: .06em;
}
.cap-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 8px rgba(37, 99, 235, .55); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card {
  position: relative; padding: 30px 26px 28px;
  border-radius: var(--r-md); background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 4px 18px -10px rgba(11, 61, 145, .1);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  overflow: hidden;
}
.feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-sm); border-color: #C9D9F5; }
.feature-num {
  position: absolute; top: 18px; right: 20px;
  font-family: var(--num); font-size: 30px; font-weight: 500;
  color: #E8EEFA; letter-spacing: .04em;
}
.feature-icon { width: 34px; height: 34px; color: var(--deep); margin-bottom: 18px; }
.feature-icon path, .feature-icon circle, .feature-icon rect { fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 9px; letter-spacing: .02em; }
.feature-card p { font-size: 14px; color: var(--ink-soft); line-height: 1.85; text-wrap: pretty; }

.model-strip { margin-top: 44px; text-align: center; }
.model-logo { width: 28px; height: 28px; object-fit: contain; display: block; }
.model-label { font-size: 13.5px; color: var(--ink-soft); letter-spacing: .14em; margin-bottom: 24px; }
.model-groups { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 30px; text-align: left; }
.model-group h4 {
  font-size: 13px; font-weight: 700; letter-spacing: .2em;
  color: var(--blue); margin-bottom: 14px;
}
.model-list { display: flex; justify-content: flex-start; gap: 12px; flex-wrap: wrap; }
.model-list li {
  display: flex; flex-direction: column; gap: 1px; align-items: center;
  padding: 13px 28px; border-radius: 999px;
  background: #fff; border: 1px solid var(--line);
  box-shadow: 0 3px 12px -8px rgba(11, 61, 145, .12);
  transition: border-color .25s, transform .25s;
}
.model-list li:hover { border-color: var(--blue); transform: translateY(-2px); }
.model-list b { font-family: var(--num); font-size: 15.5px; font-weight: 600; color: var(--deep); letter-spacing: .02em; }
.model-list span { font-size: 12px; color: var(--ink-soft); }

.download-band {
  margin-top: 72px; padding: 46px 54px;
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, var(--deep) 0%, #0A3280 60%, #082458 100%);
  color: #fff;
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
  box-shadow: var(--shadow-lg);
  position: relative; overflow: hidden;
}
.download-band::after {
  content: ""; position: absolute; right: -80px; top: -90px; width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(255, 255, 255, .16), transparent 65%);
  pointer-events: none;
}
.download-copy h3 { font-size: 26px; font-weight: 700; letter-spacing: .02em; margin-bottom: 10px; }
.download-copy p { color: #B9C8EA; font-size: 15px; max-width: 480px; text-wrap: pretty; }
.download-note { margin-top: 12px; font-size: 12.5px; color: #8FA3D4; letter-spacing: .05em; }
.download-btns { display: flex; gap: 14px; flex-wrap: wrap; position: relative; z-index: 1; }

.im-strip { margin-top: 30px; text-align: center; }
.im-title { font-size: 15px; color: var(--ink-soft); margin-bottom: 20px; }
.im-list { display: flex; justify-content: center; align-items: center; gap: 12px; flex-wrap: wrap; }
.im-list li {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: 999px; font-size: 14px; font-weight: 600;
  background: #fff; border: 1px solid var(--line); color: var(--ink);
  transition: border-color .25s, transform .25s;
}
.im-list li:hover { border-color: var(--blue); transform: translateY(-2px); }
.im-list svg { width: 18px; height: 18px; color: var(--deep); }
.im-logo { width: 32px; height: 32px; object-fit: contain; display: block; }
.im-list svg path, .im-list svg circle { fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.im-plus { color: var(--ink-soft); font-weight: 400; background: none; border: none; padding: 10px 4px; }
.im-pikka { background: linear-gradient(135deg, #12306F, var(--deep)); color: #fff; border-color: transparent; }

.mcp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 66px; }
.mcp-card {
  padding: 32px 28px; border-radius: var(--r-md);
  background: #fff; border: 1px solid var(--line);
  transition: transform .3s ease, box-shadow .3s ease;
}
.mcp-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-sm); }
.mcp-icon { width: 32px; height: 32px; color: var(--deep); margin-bottom: 18px; }
.mcp-icon path, .mcp-icon circle, .mcp-icon rect { fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.mcp-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 9px; }
.mcp-card p { font-size: 14px; color: var(--ink-soft); }

.wall-title { text-align: center; font-size: 14px; letter-spacing: .16em; color: var(--ink-soft); margin-bottom: 30px; }
.service-wall {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px;
}
.service-wall li {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 13px;
  padding: 26px 12px; border-radius: var(--r-md);
  background: #fff; border: 1px solid var(--line);
  font-size: 14px; font-weight: 600; color: var(--ink);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.service-wall li:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); border-color: #C9D9F5; }
.service-wall svg { width: 30px; height: 30px; color: var(--deep); }
.service-wall li path:not([fill="none"]), .service-wall li circle:not([fill="none"]) { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.service-wall li path[fill="none"], .service-wall li circle[fill="none"] { stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.service-wall li rect { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linejoin: round; }
.service-wall .more {
  border-style: dashed; color: var(--ink-soft); background: transparent;
  font-weight: 500; letter-spacing: .05em;
}

.mcp-cta { text-align: center; margin-top: 44px; font-size: 15px; color: var(--ink-soft); }
.mcp-cta a { color: var(--blue); font-weight: 600; border-bottom: 1.5px solid transparent; transition: border-color .25s; }
.mcp-cta a:hover { border-color: var(--blue); }

/* ---------- 03 A2A ---------- */
.a2a-diagram { max-width: 860px; margin: 0 auto 60px; }
.a2a-diagram svg { width: 100%; height: auto; }
.a2a-diagram text { font-size: 13px; fill: #D7E4FB; letter-spacing: .1em; font-family: var(--sans); }
.agent-node circle { filter: drop-shadow(0 0 7px rgba(127, 166, 255, .8)); }
.dance-dash { animation: dance 4.2s linear infinite; }
@keyframes dance { to { stroke-dashoffset: -194; } }
.diagram-cap { text-align: center; font-size: 13.5px; color: #BCCDF0; letter-spacing: .1em; margin-top: 10px; }

.a2a-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.a2a-card {
  padding: 34px 32px; border-radius: var(--r-md);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(186, 211, 255, .22);
  backdrop-filter: blur(12px);
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
}
.a2a-card:hover { transform: translateY(-5px); border-color: rgba(186, 211, 255, .55); background: rgba(255, 255, 255, .14); }
.a2a-tag {
  display: inline-block; font-family: var(--num); font-size: 12px; font-weight: 600;
  letter-spacing: .2em; color: #BAD3FF; text-transform: uppercase;
  padding: 5px 14px; border-radius: 999px;
  border: 1px solid rgba(186, 211, 255, .38); background: rgba(255, 255, 255, .08);
  margin-bottom: 18px;
}
.a2a-card h3 { font-size: 21px; font-weight: 700; color: #fff; margin-bottom: 10px; letter-spacing: .03em; }
.a2a-card p { font-size: 14.5px; color: #A9BBE4; text-wrap: pretty; }

.a2a-benefits {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
  margin-top: 26px; padding-top: 40px;
  border-top: 1px solid rgba(127, 166, 255, .16);
}
.a2a-benefits li { display: flex; flex-direction: column; gap: 6px; }
.a2a-benefits b { font-size: 16.5px; color: #fff; letter-spacing: .04em; }
.a2a-benefits span { font-size: 13.5px; color: #BCCDF0; }

/* ---------- 04 场景应用 ---------- */
.scene-tabs { display: flex; justify-content: center; gap: 10px; margin-bottom: 48px; }
.tab {
  padding: 11px 36px; border-radius: 999px; cursor: pointer;
  font-size: 15.5px; font-weight: 600; font-family: var(--sans);
  color: var(--ink-soft); background: #fff; border: 1.5px solid var(--line);
  transition: all .3s ease;
}
.tab:hover { border-color: #C9D9F5; color: var(--deep); }
.tab.is-active { background: var(--deep); border-color: var(--deep); color: #fff; box-shadow: var(--shadow-sm); }

.scene-panel {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.scene-panel[hidden] { display: none; }
.scene-card {
  padding: 30px 28px; border-radius: var(--r-md);
  background: #fff; border: 1px solid var(--line);
  box-shadow: 0 4px 16px -10px rgba(11, 61, 145, .1);
  transition: transform .3s ease, box-shadow .3s ease;
}
.scene-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-sm); }
.scene-card svg { width: 32px; height: 32px; color: var(--blue); margin-bottom: 18px; }
.scene-card svg path, .scene-card svg circle, .scene-card svg rect { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.scene-card h3 { font-size: 17.5px; font-weight: 700; margin-bottom: 8px; }
.scene-card p { font-size: 14px; color: var(--ink-soft); text-wrap: pretty; }

/* ---------- 05 关于我们 ---------- */
.about-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 64px; align-items: center; }
.about-copy p { font-size: 16px; color: var(--ink-soft); margin-bottom: 22px; text-wrap: pretty; }
.about-copy p:first-child { font-size: 18px; color: var(--ink); }
.about-copy em { font-style: normal; color: var(--deep); font-weight: 700; }
.about-copy b { color: var(--deep); }
.link-arrow { display: inline-block; margin-top: 8px; color: var(--blue); font-weight: 600; border-bottom: 1.5px solid transparent; transition: border-color .25s; }
.link-arrow:hover { border-color: var(--blue); }

.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.about-stat {
  padding: 30px 26px; border-radius: var(--r-md);
  background: #fff; border: 1px solid var(--line);
  box-shadow: 0 4px 16px -10px rgba(11, 61, 145, .1);
  text-align: left;
}
.about-stat b { font-family: var(--num); font-size: 44px; font-weight: 500; color: var(--deep); line-height: 1.1; display: block; }
.about-stat b i { font-style: normal; color: var(--accent); font-size: 30px; }
.about-stat span { font-size: 13.5px; color: var(--ink-soft); letter-spacing: .06em; }

/* ---------- 06 联系我们 ---------- */
.contact { padding-bottom: 100px; }
.contact-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 22px; }
.contact-card {
  padding: 38px 34px; border-radius: var(--r-lg);
  background: rgba(16, 36, 89, .55);
  border: 1px solid rgba(127, 166, 255, .18);
  backdrop-filter: blur(12px);
  display: flex; flex-direction: column; align-items: flex-start;
  transition: transform .3s ease, border-color .3s ease;
}
.contact-card:hover { transform: translateY(-5px); border-color: rgba(127, 166, 255, .4); }
.contact-card-hero {
  background: linear-gradient(150deg, rgba(255, 255, 255, .16), rgba(11, 61, 145, .4) 55%);
  border-color: rgba(255, 255, 255, .38);
}
.contact-card-hero:hover { border-color: rgba(255, 255, 255, .7); }
.contact-tag {
  font-family: var(--num); font-size: 11.5px; font-weight: 600;
  letter-spacing: .22em; color: #BAD3FF; text-transform: uppercase;
  margin-bottom: 16px;
}
.contact-card h3 { font-size: 23px; font-weight: 700; color: #fff; margin-bottom: 12px; letter-spacing: .02em; }
.contact-card p { font-size: 14.5px; color: #A9BBE4; margin-bottom: 26px; text-wrap: pretty; }
.contact-card .btn { margin-top: auto; }

.contact-mail { text-align: center; margin-top: 52px; font-size: 14.5px; color: #B9C8EA; letter-spacing: .05em; }
.contact-mail a { color: #fff; font-weight: 600; border-bottom: 1.5px solid rgba(186, 211, 255, .55); transition: border-color .25s; }
.contact-mail a:hover { border-color: #DCE9FF; }

/* ---------- Footer ---------- */
.footer { background: var(--navy-950); color: #8FA3D4; padding: 66px 0 48px; border-top: 1px solid rgba(127, 166, 255, .12); }
.footer-inner { display: flex; align-items: flex-start; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.footer-slogan { margin-top: 14px; font-size: 13.5px; letter-spacing: .2em; color: #6C80B4; }
.footer-nav { display: flex; gap: 26px; flex-wrap: wrap; padding-top: 8px; }
.footer-nav a { font-size: 14px; color: #A9BBE4; transition: color .25s; }
.footer-nav a:hover { color: #fff; }
.footer-meta { text-align: right; font-size: 13px; line-height: 2.1; color: #6C80B4; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .model-groups { grid-template-columns: 1fr; gap: 24px; }
  .service-wall { grid-template-columns: repeat(4, 1fr); }
  .a2a-grid { grid-template-columns: 1fr; }
  .a2a-benefits { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .contact-grid { grid-template-columns: 1fr; }
  .download-band { flex-direction: column; align-items: flex-start; }
  .scene-panel { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .section { padding: 84px 0; }
  .hero { padding: 120px 22px 90px; }
  .hero-br { display: none; }
  .hero-stats { gap: 22px; }
  .stat-div { display: none; }
  .chip { display: none; }
  .mcp-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 44px; }
  .scene-panel { grid-template-columns: 1fr; }
  .mac-frame { padding: 12px; }
  .footer-meta { text-align: left; }
  .footer-inner { flex-direction: column; gap: 32px; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 22px; }
  .feature-grid { grid-template-columns: 1fr; }
  .service-wall { grid-template-columns: repeat(2, 1fr); }
  .download-band { padding: 34px 28px; }
  .hero-cta .btn { width: 100%; }
  .about-stats { grid-template-columns: 1fr 1fr; }
}

/* ---------- 动效克制 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-hero], [data-reveal] { opacity: 1; transform: none; }
}

/* ============================================================
   v12.7 全站响应式 — 平板 768–1023 / 手机 <768
   桌面端 ≥1024 完全沿用 v12.6，本层仅在 <1024 生效
   ============================================================ */

/* ----- 汉堡按钮（桌面默认隐藏，不参与布局） ----- */
.nav-burger {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  border: none; background: none; cursor: pointer;
  border-radius: 12px; color: var(--deep);
  transition: background .25s ease;
  flex: none;
}
.nav-burger svg { width: 24px; height: 24px; display: block; }
.nav:not(.scrolled) .nav-burger { color: #FFFFFF; }
.nav-burger:hover { background: rgba(37, 99, 235, .08); }
.nav:not(.scrolled) .nav-burger:hover { background: rgba(255, 255, 255, .14); }

/* ----- 移动端抽屉菜单（玻璃拟态 · 深空蓝） ----- */
.nav-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 120;
  width: min(85vw, 340px);
  display: flex; flex-direction: column;
  padding: 16px 22px 26px;
  background: rgba(8, 46, 112, .92);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  border-left: 1px solid rgba(127, 166, 255, .22);
  box-shadow: var(--shadow-lg);
  transform: translateX(105%);
  visibility: hidden;
  transition: transform .38s cubic-bezier(.2, .7, .2, 1), visibility 0s linear .38s;
}
.nav-drawer.is-open {
  transform: none;
  visibility: visible;
  transition: transform .38s cubic-bezier(.2, .7, .2, 1);
}
.nav-drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 14px; border-bottom: 1px solid rgba(127, 166, 255, .16);
}
.nav-drawer-title {
  font-family: var(--num); font-size: 11.5px; font-weight: 600;
  letter-spacing: .3em; color: #BAD3FF;
}
.nav-drawer-close {
  width: 44px; height: 44px; flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 12px; cursor: pointer;
  border: 1px solid rgba(127, 166, 255, .3);
  background: rgba(255, 255, 255, .08);
  color: #D6E4FC;
  transition: background .25s ease, border-color .25s ease;
}
.nav-drawer-close svg { width: 18px; height: 18px; display: block; }
.nav-drawer-close:hover { background: rgba(255, 255, 255, .16); border-color: rgba(127, 166, 255, .6); }
.nav-drawer-links { display: flex; flex-direction: column; overflow-y: auto; }
.nav-drawer-links a {
  padding: 15px 4px;
  font-size: 17px; font-weight: 600; color: #D6E4FC; letter-spacing: .02em;
  border-bottom: 1px solid rgba(127, 166, 255, .14);
  transition: color .25s ease;
}
.nav-drawer-links a:hover { color: #FFFFFF; }
.nav-drawer-cta {
  margin-top: auto;
  background: #FFFFFF; color: var(--accent);
  box-shadow: 0 10px 28px -8px rgba(8, 40, 100, .5);
  padding: 13px 24px; font-size: 15.5px;
}
.nav-drawer-cta:hover { background: #FFFFFF; }
.nav-overlay {
  position: fixed; inset: 0; z-index: 110;
  background: rgba(7, 24, 64, .45);
  opacity: 0; visibility: hidden;
  transition: opacity .3s ease, visibility 0s linear .3s;
}
.nav-overlay.is-open {
  opacity: 1; visibility: visible;
  transition: opacity .3s ease;
}

/* ----- 平板 768–1023：适度重排 ----- */
@media (max-width: 1023px) {
  html, body { overflow-x: clip; }  /* 修复窄屏下装饰光晕和隐藏抽屉造成的横向溢出 */
  html { scroll-padding-top: 76px; }
  .nav-inner { gap: 18px; padding: 0 22px; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 13.5px; letter-spacing: 0; }
  .btn-nav { padding: 8px 14px; font-size: 13px; }
  .wrap { padding: 0 24px; }
  .sec-head { margin-bottom: 48px; }
  .section { padding: 92px 0; }
}
/* 覆盖旧 860 断点：平板区间导航保持可见 */
@media (min-width: 768px) and (max-width: 1023px) {
  .nav-links { display: flex; }
}

/* ----- 手机 <768：汉堡菜单 + 单列 + 缩放 ----- */
@media (max-width: 767.98px) {
  html { scroll-padding-top: 68px; }
  .nav-inner { height: 60px; gap: 10px; padding: 0 16px; }
  .brand-mark { width: 30px; height: 30px; }
  .brand-name { font-size: 17px; }
  .nav-links { display: none; }
  .btn-nav { padding: 8px 14px; font-size: 13px; }
  .nav-burger { display: inline-flex; margin-left: auto; }

  .wrap { padding: 0 20px; }
  .section { padding: 72px 0; }
  .sec-head { margin-bottom: 40px; }
  .eyebrow { font-size: 11.5px; letter-spacing: .22em; margin-bottom: 14px; }
  .sec-head h2 { font-size: clamp(25px, 7vw, 30px); }
  .lead { margin-top: 16px; font-size: 15px; }

  .hero { padding: 104px 20px 80px; }
  .hero-eyebrow { font-size: 11.5px; letter-spacing: .22em; padding: 8px 16px; }
  .hero-title { font-size: clamp(34px, 10.5vw, 44px); margin: 26px 0 18px; }
  .hero-sub { font-size: 15px; }
  .hero-cta { display: flex; flex-direction: column; align-items: stretch; gap: 12px; }
  .hero-cta .btn { width: 100%; }
  .hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 12px; margin-top: 44px; }
  .stat b { font-size: 20px; }
  .stat > span { font-size: 12px; }

  .mac-frame { margin-bottom: 48px; padding: 10px; }
  .feature-grid { grid-template-columns: 1fr; gap: 16px; }
  .feature-card { padding: 24px 20px 22px; }
  .model-strip { margin-top: 36px; }
  .model-label { font-size: 12.5px; letter-spacing: .04em; line-height: 1.8; }

  .download-band { flex-direction: column; align-items: stretch; gap: 22px; padding: 30px 22px; margin-top: 48px; }
  .download-copy h3 { font-size: 21px; }
  .download-btns { width: 100%; }
  .download-btns .btn { flex: 1; }

  .mcp-grid { grid-template-columns: 1fr; gap: 16px; margin-bottom: 44px; }
  .mcp-card { padding: 26px 22px; }
  .service-wall { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .service-wall li { padding: 20px 10px; }

  .a2a-diagram { margin-bottom: 40px; }
  .a2a-card { padding: 26px 22px; }
  .a2a-benefits { grid-template-columns: 1fr; gap: 20px; padding-top: 28px; }

  .scene-tabs { flex-direction: column; align-items: stretch; gap: 10px; margin-bottom: 36px; }
  .tab { width: 100%; padding: 12px; }
  .scene-panel { grid-template-columns: 1fr; gap: 16px; }

  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-stat b { font-size: 36px; }
  .about-stat b i { font-size: 24px; }

  .contact { padding-bottom: 72px; }
  .contact-grid { grid-template-columns: 1fr; gap: 16px; }
  .contact-card { padding: 28px 22px; }
  .contact-card h3 { font-size: 20px; }

  .footer { padding: 48px 0 40px; }
  .footer-meta { text-align: left; }
}