/* NEUXSAI 官网样式 —— 纯 CSS，无框架 */
:root {
  --brand: #b9292d;
  --brand-dark: #952226;
  --accent: #b9292d;          /* 参考站的红色按钮 */
  --accent-dark: #952226;
  --ink: #28231e;
  --ink-2: #51473b;
  --muted: #776959;
  --faint: #9b8b76;
  --line: #ded4c4;
  --bg: #f5f0e7;
  --bg-soft: #ebe3d5;
  --shadow: 0 2px 6px rgba(40, 34, 27, .06), 0 14px 34px rgba(40, 34, 27, .08);
  --header-h: 88px;
  --max: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
  margin: 0; color: var(--ink); background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  font-size: 16px; line-height: 1.7; -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; letter-spacing: .01em; }
p { margin: 0; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 32px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 4px; font-weight: 600; font-size: 15px; letter-spacing: .04em;
  border: 1px solid transparent; cursor: pointer; transition: background .15s, transform .15s, box-shadow .15s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 6px 18px rgba(232, 85, 91, .3); }
.btn-accent:hover { background: var(--accent-dark); }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 6px 18px rgba(185, 41, 45, .25); }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-outline { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-outline:hover { border-color: var(--brand); color: var(--brand); }
.btn-lg { padding: 15px 34px; font-size: 16px; }

/* ---------- 顶栏 ---------- */
.top {
  position: sticky; top: 0; z-index: 50; height: var(--header-h);
  background: rgba(255,255,255,.96); backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--line);
}
.top .wrap { height: 100%; display: flex; align-items: center; gap: 40px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo img { width: 42px; height: 42px; border-radius: 10px; }
.logo span { font-weight: 800; font-size: 20px; letter-spacing: .06em; color: var(--ink); }
.nav { display: flex; gap: 6px; }
.nav a { padding: 10px 14px; font-size: 17px; color: var(--ink); border-radius: 6px; position: relative; }
.nav a:hover { color: var(--brand); }
.nav a.is-active::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 2px; background: var(--brand); border-radius: 2px; }
.top-spacer { flex: 1; }
.hotline { display: flex; align-items: center; gap: 12px; text-align: right; }
.hotline small { display: block; color: var(--accent); font-size: 13px; line-height: 1.2; }
.hotline strong { display: block; font-size: 20px; letter-spacing: .04em; line-height: 1.2; }
.hotline svg { width: 34px; height: 34px; color: var(--accent); }
.top .btn { padding: 9px 18px; }
.burger { display: none; width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 8px; background: #fff; align-items: center; justify-content: center; cursor: pointer; }
.burger svg { width: 20px; height: 20px; }
.mobile-nav { display: none; }

/* ---------- Hero 轮播 ---------- */
.hero {
  position: relative; height: 620px; overflow: hidden; color: #fff;
  background: #24201c;
}
.slide {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 0 80px;
  opacity: 0; transition: opacity .7s ease; pointer-events: none;
}
.slide.is-active { opacity: 1; pointer-events: auto; }
.slide-bg { position: absolute; inset: 0; z-index: 0; }
.slide-bg svg { width: 100%; height: 100%; display: block; }
.slide-inner { position: relative; z-index: 1; max-width: 900px; }
.slide h1 { font-size: 56px; font-weight: 800; letter-spacing: .02em; text-shadow: 0 2px 20px rgba(0,0,0,.35); }
.slide p { margin: 22px auto 34px; font-size: 22px; letter-spacing: .04em; opacity: .95; max-width: 720px; }
.slide p u { text-decoration-thickness: 1px; text-underline-offset: 4px; }
.hero-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 56px; height: 56px; border: 0; background: transparent; color: #fff; cursor: pointer; opacity: .9;
}
.hero-arrow:hover { opacity: 1; }
.hero-arrow svg { width: 40px; height: 40px; }
.hero-arrow.prev { left: 20px; } .hero-arrow.next { right: 20px; }
.hero-dots { position: absolute; left: 0; right: 0; bottom: 18px; display: flex; justify-content: center; gap: 8px; z-index: 3; }
.hero-dots button { width: 34px; height: 4px; border: 0; border-radius: 2px; background: rgba(255,255,255,.35); cursor: pointer; padding: 0; }
.hero-dots button.is-active { background: #fff; }

/* ---------- 通用 section ---------- */
.section { padding: 88px 0; }
.section.soft { background: var(--bg-soft); }
.sec-head { text-align: center; margin-bottom: 52px; }
.sec-head h2 { font-size: 36px; font-weight: 800; letter-spacing: .04em; }
.sec-head p { margin-top: 12px; font-size: 19px; color: var(--muted); letter-spacing: .06em; }

/* 里程碑 */
.milestones { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.ms { text-align: center; padding: 34px 20px; border: 1px solid var(--line); border-radius: 12px; background: #fff; transition: box-shadow .2s, transform .2s; }
.ms:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.ms strong { display: block; font-size: 48px; font-weight: 800; color: var(--brand); line-height: 1.1; letter-spacing: -.01em; }
.ms strong small { font-size: 20px; font-weight: 700; margin-left: 2px; }
.ms span { display: block; margin-top: 10px; font-size: 16px; color: var(--ink-2); font-weight: 600; }
.ms em { display: block; margin-top: 4px; font-style: normal; font-size: 13px; color: var(--faint); }

/* 解决方案 */
.solutions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.sol { padding: 36px 30px; border-radius: 14px; background: #fff; border: 1px solid var(--line); transition: box-shadow .2s, transform .2s; }
.sol:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.sol .ico { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; background: #f7f4f0; color: var(--brand); margin-bottom: 20px; }
.sol .ico svg { width: 28px; height: 28px; }
.sol h3 { font-size: 21px; font-weight: 700; margin-bottom: 10px; }
.sol p { color: var(--muted); font-size: 15px; }
.sol ul { margin: 16px 0 0; padding: 0; list-style: none; }
.sol li { font-size: 14px; color: var(--ink-2); padding: 5px 0 5px 22px; position: relative; }
.sol li::before { content: ""; position: absolute; left: 0; top: 13px; width: 12px; height: 12px; border-radius: 50%; background: #f7f4f0; box-shadow: inset 0 0 0 3px var(--brand); }
.sol a.more { display: inline-block; margin-top: 18px; color: var(--brand); font-weight: 600; font-size: 14px; }

/* 产品模块（交替图文） */
.feature { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; padding: 48px 0; }
.feature:nth-child(even) .feature-visual { order: 2; }
.feature h3 { font-size: 28px; font-weight: 800; margin-bottom: 6px; }
.feature .kicker { color: var(--accent); font-weight: 700; letter-spacing: .12em; font-size: 13px; text-transform: uppercase; margin-bottom: 12px; }
.feature p { color: var(--ink-2); font-size: 16px; margin-bottom: 18px; }
.feature .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.feature .tags span { font-size: 13px; padding: 4px 12px; border-radius: 999px; background: var(--bg-soft); color: var(--ink-2); border: 1px solid var(--line); }
.feature-visual { border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--line); background: #fff; }
.shot { font-size: 12.5px; color: var(--ink-2); }
.shot .bar { display: flex; gap: 6px; padding: 10px 12px; border-bottom: 1px solid var(--line); background: #f9f6f3; align-items: center; }
.shot .bar i { width: 10px; height: 10px; border-radius: 50%; display: block; }
.shot .bar i:nth-child(1) { background: #ff5f57; } .shot .bar i:nth-child(2) { background: #febc2e; } .shot .bar i:nth-child(3) { background: #28c840; }
.shot .bar span { margin-left: auto; color: var(--faint); font-size: 11px; }
.shot .body { display: grid; grid-template-columns: 150px 1fr; min-height: 300px; }
.shot .side { border-right: 1px solid var(--line); padding: 10px; background: #fdfdfc; }
.shot .side div { padding: 7px 9px; border-radius: 7px; color: var(--muted); }
.shot .side div.on { background: #f7f4f0; color: var(--brand); font-weight: 600; }
.shot .main { padding: 16px 18px; }
.shot h4 { font-size: 15px; margin-bottom: 4px; color: var(--ink); }
.shot .sub { color: var(--muted); margin-bottom: 12px; }
.shot .row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.shot .chip { padding: 3px 9px; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.shot .chip.on { background: var(--brand); color: #fff; border-color: var(--brand); }
.shot .chip.ok { background: #e4f6ee; color: #1a9c68; border-color: #bfe8d4; }
.shot .tbl { border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.shot .tbl div { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 8px; padding: 6px 10px; border-bottom: 1px solid var(--line); }
.shot .tbl div:first-child { background: #f9f6f3; font-weight: 600; }
.shot .tbl div:last-child { border-bottom: 0; }
.shot .bars { display: flex; align-items: flex-end; gap: 6px; height: 90px; padding: 8px 0; }
.shot .bars i { flex: 1; background: linear-gradient(180deg, #da9994, var(--brand)); border-radius: 4px 4px 0 0; display: block; }
.shot .stat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 10px; }
.shot .stat div { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; }
.shot .stat strong { display: block; font-size: 16px; color: var(--brand); }
.shot .grade { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 11px; font-weight: 700; }
.shot .grade.b { background: #f3eee8; color: #903833; } .shot .grade.c { background: #fff1cf; color: #9a6400; } .shot .grade.r { background: #fdeaee; color: #d1435b; }
.shot .msg { padding: 8px 10px; border-radius: 10px; margin-bottom: 8px; max-width: 85%; }
.shot .msg.me { background: #f7f4f0; margin-left: auto; }
.shot .msg.them { background: #f9f6f3; }

/* 流程 */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { position: relative; padding: 28px 24px 24px; border-radius: 14px; background: #fff; border: 1px solid var(--line); }
.step b { position: absolute; top: -14px; left: 22px; width: 30px; height: 30px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 14px; display: flex; align-items: center; justify-content: center; }
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 14px; }

/* 下载 */
.dl-band { background: linear-gradient(135deg, #36312b 0%, #b54740 60%, #d1827d 100%); color: #fff; }
.dl-band .sec-head h2, .dl-band .sec-head p { color: #fff; }
.dl-band .sec-head p { opacity: .85; }
.dl-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 900px; margin: 0 auto; }
.dl { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.22); border-radius: 16px; padding: 30px 30px 26px; backdrop-filter: blur(6px); }
.dl .os { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.dl .os svg { width: 40px; height: 40px; }
.dl .os h3 { font-size: 22px; font-weight: 700; }
.dl .os small { display: block; opacity: .8; font-size: 13px; }
.dl .meta { display: flex; gap: 16px; font-size: 13px; opacity: .85; margin-bottom: 18px; flex-wrap: wrap; }
.dl .meta span b { font-weight: 700; opacity: 1; }
.dl .btn { width: 100%; }
.dl .file { margin-top: 10px; font-size: 12px; opacity: .7; word-break: break-all; font-family: ui-monospace, Menlo, monospace; }
.dl-note { text-align: center; margin-top: 26px; font-size: 14px; opacity: .85; }
.dl-note a { text-decoration: underline; text-underline-offset: 3px; }

/* 文档入口 */
.docs-cta { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
.docs-cta h2 { font-size: 34px; font-weight: 800; margin-bottom: 14px; }
.docs-cta p { color: var(--ink-2); margin-bottom: 24px; font-size: 17px; }
.doc-links { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.doc-links a { padding: 16px 18px; border: 1px solid var(--line); border-radius: 12px; background: #fff; transition: border-color .15s, box-shadow .15s; }
.doc-links a:hover { border-color: var(--brand); box-shadow: var(--shadow); }
.doc-links strong { display: block; font-size: 15px; }
.doc-links span { display: block; font-size: 13px; color: var(--muted); margin-top: 2px; }

/* 关于 */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.about h2 { font-size: 34px; font-weight: 800; margin-bottom: 14px; }
.about p { color: var(--ink-2); margin-bottom: 14px; }
.about .facts { display: grid; grid-template-columns: max-content 1fr; gap: 8px 18px; font-size: 15px; margin-top: 8px; }
.about .facts dt { color: var(--muted); }
.about .facts dd { margin: 0; }

/* 页脚 */
.footer { background: #1e1b17; color: #d3b8b6; padding: 56px 0 28px; font-size: 14px; }
.footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer a { display: block; padding: 4px 0; color: #d3b8b6; }
.footer a:hover { color: #fff; }
.footer .logo span { color: #fff; }
.footer .copy { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; color: #9f7f7d; font-size: 13px; }

/* 悬浮联系 */
.fab {
  position: fixed; right: 28px; bottom: 28px; z-index: 40;
  width: 86px; height: 86px; border-radius: 10px; background: #fff; border: 1px solid var(--accent);
  color: var(--accent); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  font-size: 14px; box-shadow: var(--shadow);
}
.fab svg { width: 26px; height: 26px; }
.fab:hover { background: var(--accent); color: #fff; }

/* 下载页专用 */
.page-hero { background: #b9292d; color: #fff; padding: 72px 0 64px; text-align: center; }
.page-hero h1 { font-size: 42px; font-weight: 800; }
.page-hero p { margin-top: 12px; font-size: 18px; opacity: .9; }
.dl-page .dl { background: #fff; border-color: var(--line); color: var(--ink); backdrop-filter: none; box-shadow: var(--shadow); }
.dl-page .dl .os small, .dl-page .dl .meta, .dl-page .dl .file { opacity: 1; color: var(--muted); }
.dl-page .dl-cards { margin-top: -40px; position: relative; z-index: 2; }
.req { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.req div { padding: 22px 24px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.req h3 { font-size: 16px; margin-bottom: 8px; }
.req p, .req li { font-size: 14px; color: var(--ink-2); }
.req ul { margin: 0; padding-left: 18px; }
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 12px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--bg-soft); font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .9em; background: var(--bg-soft); padding: .1em .4em; border-radius: 5px; }
.faq details { border: 1px solid var(--line); border-radius: 10px; background: #fff; margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 14px 18px; font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "＋ "; color: var(--brand); }
.faq details[open] summary::before { content: "－ "; }
.faq .a { padding: 0 18px 16px 38px; color: var(--ink-2); font-size: 14.5px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .milestones, .flow { grid-template-columns: repeat(2, 1fr); }
  .solutions { grid-template-columns: 1fr; }
  .feature { grid-template-columns: 1fr; gap: 28px; }
  .feature:nth-child(even) .feature-visual { order: 0; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
  .docs-cta, .about { grid-template-columns: 1fr; }
  .slide h1 { font-size: 42px; }
  .hotline { display: none; }
}
@media (max-width: 760px) {
  :root { --header-h: 68px; }
  .wrap { padding: 0 18px; }
  .nav, .top .btn-accent { display: none; }
  .burger { display: flex; }
  .mobile-nav { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--line); padding: 8px 18px 14px; z-index: 49; box-shadow: var(--shadow); }
  body.nav-open .mobile-nav { display: block; }
  .mobile-nav a { display: block; padding: 12px 4px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .mobile-nav a:last-child { border-bottom: 0; }
  .hero { height: 480px; }
  .slide { padding: 0 24px; }
  .slide h1 { font-size: 30px; }
  .slide p { font-size: 16px; }
  .hero-arrow { display: none; }
  .section { padding: 56px 0; }
  .sec-head h2 { font-size: 28px; }
  .milestones, .flow, .dl-cards, .doc-links, .req { grid-template-columns: 1fr; }
  .ms strong { font-size: 38px; }
  .footer .cols { grid-template-columns: 1fr; gap: 24px; }
  .fab { width: 64px; height: 64px; font-size: 12px; right: 14px; bottom: 14px; }
  .shot .body { grid-template-columns: 1fr; } .shot .side { display: none; }
  .page-hero h1 { font-size: 30px; }
}

.dl .notes { margin-top: 12px; font-size: 13px; line-height: 1.6; opacity: .85; padding-top: 10px; border-top: 1px dashed rgba(255,255,255,.25); }
.dl-page .dl .notes { border-top-color: var(--line); color: var(--ink-2); opacity: 1; }

/* =====================================================================
   动画与交互
   ===================================================================== */
/* 滚动渐入：元素带 .reveal，进入视口后加 .in；--i 控制错峰 */
.reveal { opacity: 0; transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); transition-delay: calc(var(--i, 0) * 90ms); will-change: opacity, transform; }
.reveal[data-anim="up"] { transform: translateY(28px); }
.reveal[data-anim="left"] { transform: translateX(-36px); }
.reveal[data-anim="right"] { transform: translateX(36px); }
.reveal[data-anim="zoom"] { transform: scale(.92); }
.reveal.in { opacity: 1; transform: none; }

/* Hero 文案入场：每次切到该张时重播 */
.slide-inner > * { opacity: 0; transform: translateY(18px); }
.slide.is-active .slide-inner > * { animation: heroIn .8s cubic-bezier(.2,.7,.2,1) forwards; }
.slide.is-active .slide-inner > :nth-child(1) { animation-delay: .1s; }
.slide.is-active .slide-inner > :nth-child(2) { animation-delay: .28s; }
.slide.is-active .slide-inner > :nth-child(3) { animation-delay: .46s; }
@keyframes heroIn { to { opacity: 1; transform: none; } }
/* 背景微动：缓慢平移 + 光点呼吸 */
.slide-bg svg { animation: drift 24s ease-in-out infinite alternate; transform-origin: center; }
@keyframes drift { from { transform: scale(1.02) translateX(-8px); } to { transform: scale(1.06) translateX(8px); } }
.slide-bg [filter] { animation: pulse 3.2s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.slide-bg [filter]:nth-of-type(2) { animation-delay: .8s; } .slide-bg [filter]:nth-of-type(3) { animation-delay: 1.6s; } .slide-bg [filter]:nth-of-type(4) { animation-delay: 2.4s; }
@keyframes pulse { 0%,100% { opacity: .5; transform: scale(1); } 50% { opacity: 1; transform: scale(1.6); } }
.btn-accent { position: relative; overflow: hidden; }
.btn-accent::after { content: ""; position: absolute; top: 0; left: -80%; width: 50%; height: 100%; background: linear-gradient(100deg, transparent, rgba(255,255,255,.35), transparent); transform: skewX(-20deg); transition: left .6s; }
.btn-accent:hover::after { left: 130%; }

/* ---------- 里程碑：深色数字条带 ---------- */
.band { background: #1e1b17; color: #fff; padding: 72px 0; position: relative; overflow: hidden; }
.band::before { content: ""; position: absolute; inset: -40% -10% auto; height: 80%; background: radial-gradient(ellipse at 30% 50%, rgba(185,41,45,.35), transparent 60%), radial-gradient(ellipse at 75% 40%, rgba(232,85,91,.22), transparent 55%); pointer-events: none; }
.band-head { display: flex; align-items: baseline; gap: 20px; margin-bottom: 40px; position: relative; }
.band-head h2 { font-size: 32px; font-weight: 800; }
.band-head p { color: #d0a29f; font-size: 16px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); position: relative; }
.stat { padding: 8px 32px 8px 0; border-right: 1px solid rgba(255,255,255,.12); margin-right: 32px; }
.stat:last-child { border-right: 0; margin-right: 0; }
.stat strong { display: block; font-size: 56px; font-weight: 800; line-height: 1; letter-spacing: -.02em; background: linear-gradient(90deg, #e2afac, #fff); -webkit-background-clip: text; background-clip: text; color: transparent; font-variant-numeric: tabular-nums; }
.stat strong small { font-size: 24px; }
.stat > span { display: block; margin-top: 12px; font-weight: 600; font-size: 16px; }
.stat em { display: block; margin-top: 4px; font-style: normal; font-size: 13px; color: #bb928f; line-height: 1.5; }

/* ---------- 解决方案：Bento ---------- */
.bento { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: minmax(150px, auto); gap: 22px; }
.bento-card { position: relative; overflow: hidden; border-radius: 18px; background: #fff; border: 1px solid var(--line); padding: 32px; transition: transform .25s, box-shadow .25s, border-color .25s; }
.bento-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.bento-card.big { grid-column: span 2; grid-row: span 2; display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: center; background: linear-gradient(135deg, #423c34 0%, #b54740 55%, #cd7670 100%); color: #fff; border: 0; }
.bento-card.tall { grid-row: span 2; display: flex; flex-direction: column; }
.bento-card.wide { grid-column: span 2; display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px; align-items: center; }
.bento-card h3 { font-size: 22px; font-weight: 800; margin: 12px 0 10px; }
.bento-card.big h3 { font-size: 30px; }
.bento-card p { font-size: 15px; color: var(--ink-2); }
.bento-card.big p { color: rgba(255,255,255,.85); }
.bento-card .more { display: inline-block; margin-top: 18px; font-weight: 600; font-size: 14px; color: var(--brand); }
.bento-card.big .more { color: #fff; border-bottom: 1px solid rgba(255,255,255,.5); }
.bento-card .pill { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .1em; padding: 4px 10px; border-radius: 999px; background: #f7f4f0; color: var(--brand); }
.bento-card.big .pill { background: rgba(255,255,255,.16); color: #fff; }
.ticks { list-style: none; margin: 14px 0 0; padding: 0; }
.ticks li { font-size: 14px; color: var(--ink-2); padding: 6px 0 6px 24px; position: relative; }
.ticks li::before { content: "✓"; position: absolute; left: 0; color: var(--brand); font-weight: 800; }
.bento-card.tall .more { margin-top: auto; padding-top: 18px; }
.paths { display: grid; gap: 10px; }
.path { display: grid; grid-template-columns: 34px 1fr; grid-template-rows: auto auto; column-gap: 12px; align-items: center; padding: 12px 14px; border-radius: 12px; background: var(--bg-soft); border: 1px solid var(--line); transition: transform .2s, background .2s; }
.path:hover { transform: translateX(4px); background: #f7f4f0; }
.path b { grid-row: span 2; width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; }
.path strong { font-size: 15px; } .path span { font-size: 13px; color: var(--muted); }
/* 鼠标跟随光晕 */
.glow::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s; background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%), rgba(185,41,45,.14), transparent 60%); }
.glow.big::after { background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,.18), transparent 60%); }
.glow:hover::after { opacity: 1; }
/* 大卡插画：轨道 + 词条 */
.bento-art { position: relative; min-height: 220px; }
.orbit { position: absolute; right: 10px; top: 0; width: 200px; height: 200px; border-radius: 50%; border: 1px dashed rgba(255,255,255,.35); animation: spin 22s linear infinite; }
.orbit::before { content: ""; position: absolute; inset: 36px; border-radius: 50%; border: 1px solid rgba(255,255,255,.25); }
.orbit i { position: absolute; width: 12px; height: 12px; border-radius: 50%; background: #dea4a0; box-shadow: 0 0 16px #dea4a0; top: -6px; left: calc(50% - 6px); }
.orbit i:nth-child(2) { top: calc(50% - 6px); left: -6px; background: #ffd166; box-shadow: 0 0 16px #ffd166; }
.orbit i:nth-child(3) { top: auto; bottom: -6px; left: calc(50% - 6px); background: #ff8e9b; box-shadow: 0 0 16px #ff8e9b; }
@keyframes spin { to { transform: rotate(360deg); } }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.bento-art .chips { position: absolute; left: 0; bottom: 0; max-width: 240px; }
.chips span { font-size: 12.5px; font-weight: 600; padding: 5px 11px; border-radius: 999px; background: rgba(255,255,255,.14); backdrop-filter: blur(4px); animation: floaty 4s ease-in-out infinite; }
.chips span:nth-child(2) { animation-delay: .7s; } .chips span:nth-child(3) { animation-delay: 1.4s; } .chips span:nth-child(4) { animation-delay: 2.1s; }
.g-blue { background: #f3eee8 !important; color: #903833; } .g-cash { background: #fff1cf !important; color: #9a6400; } .g-tail { background: #f6f3ee !important; color: #c0534c; } .g-red { background: #fdeaee !important; color: #d1435b; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }

/* ---------- 模块 Tab ---------- */
.tabs { display: grid; grid-template-columns: 300px 1fr; gap: 28px; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: var(--shadow); overflow: hidden; }
.tab-list { position: relative; display: flex; flex-direction: column; padding: 14px; background: var(--bg-soft); border-right: 1px solid var(--line); }
.tab-list button { display: grid; grid-template-columns: 34px 1fr; grid-template-rows: auto auto; column-gap: 10px; align-items: center; text-align: left; padding: 11px 12px; border: 0; border-radius: 12px; background: transparent; cursor: pointer; font: inherit; color: var(--ink-2); transition: background .2s, color .2s; }
.tab-list button b { grid-row: span 2; font-size: 12px; font-weight: 800; color: var(--faint); font-family: ui-monospace, Menlo, monospace; }
.tab-list button span { font-weight: 700; font-size: 15px; color: var(--ink); }
.tab-list button small { font-size: 12px; color: var(--muted); }
.tab-list button:hover { background: #fff; }
.tab-list button[aria-selected="true"] { background: #fff; box-shadow: 0 2px 10px rgba(40,34,27,.08); }
.tab-list button[aria-selected="true"] b, .tab-list button[aria-selected="true"] span { color: var(--brand); }
.tab-progress { position: absolute; left: 14px; right: 14px; bottom: 8px; height: 3px; border-radius: 3px; background: var(--line); overflow: hidden; }
.tab-progress::after { content: ""; position: absolute; inset: 0; width: 0; background: var(--brand); }
.tabs.is-auto .tab-progress::after { animation: tabprog 7s linear infinite; }
@keyframes tabprog { from { width: 0; } to { width: 100%; } }
.tab-panels { position: relative; min-height: 380px; }
.tab-panel { position: absolute; inset: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; padding: 40px 40px 40px 12px; opacity: 0; transform: translateY(10px); transition: opacity .4s, transform .4s; pointer-events: none; }
.tab-panel.is-active { opacity: 1; transform: none; pointer-events: auto; }
.tp-text h3 { font-size: 26px; font-weight: 800; margin-bottom: 10px; }
.tp-text p { color: var(--ink-2); font-size: 15.5px; margin-bottom: 16px; }
.tp-text a { color: var(--brand); font-weight: 600; }
.tp-art { font-size: 13px; color: var(--ink-2); }
.tp-art .ring { --p: 60; width: 130px; height: 130px; border-radius: 50%; background: conic-gradient(var(--brand) calc(var(--p) * 1%), #f1ece5 0); display: grid; place-items: center; margin: 0 auto 16px; position: relative; }
.tp-art .ring::before { content: ""; position: absolute; inset: 12px; border-radius: 50%; background: #fff; }
.tp-art .ring b, .tp-art .ring span { position: relative; z-index: 1; }
.tp-art .ring b { font-size: 30px; font-weight: 800; color: var(--ink); line-height: 1; }
.tp-art .ring span { font-size: 12px; color: var(--muted); margin-top: 2px; }
.tp-art .kv { display: grid; gap: 6px; }
.tp-art .kv div { display: flex; align-items: center; gap: 8px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.tp-art i.ok, .tp-art i.warn { width: 8px; height: 8px; border-radius: 50%; background: #1a9c68; display: inline-block; box-shadow: 0 0 0 3px #e4f6ee; }
.tp-art i.warn { background: #e4a33c; box-shadow: 0 0 0 3px #fff5e1; }
.tp-art .form { display: grid; gap: 8px; margin-bottom: 14px; }
.tp-art .f-row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.tp-art .f-row span { width: 78px; color: var(--muted); }
.tp-art .f-row b { font-weight: 600; padding: 3px 10px; border-radius: 6px; border: 1px solid var(--line); background: #fff; }
.tp-art .f-row b.on { background: var(--brand); color: #fff; border-color: var(--brand); }
.tp-art .prog { position: relative; height: 26px; border-radius: 8px; background: var(--bg-soft); border: 1px solid var(--line); overflow: hidden; }
.tp-art .prog span { position: absolute; inset: 0; width: var(--w); background: linear-gradient(90deg, #da9994, var(--brand)); animation: grow 1.2s ease-out; }
.tp-art .prog em { position: absolute; inset: 0; display: flex; align-items: center; padding-left: 10px; font-style: normal; font-size: 12px; color: #fff; mix-blend-mode: difference; }
@keyframes grow { from { width: 0; } }
.tp-art .list { display: grid; gap: 6px; }
.tp-art .list div { display: flex; justify-content: space-between; gap: 12px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.tp-art .list b { font-weight: 700; color: var(--ink-2); white-space: nowrap; }
.tp-art .list b.ok { color: #1a9c68; } .tp-art .list b.warn { color: #c07a12; }
.tp-art .chat > div { padding: 9px 12px; border-radius: 12px; margin-bottom: 8px; max-width: 88%; }
.tp-art .chat .me { background: #f7f4f0; margin-left: auto; }
.tp-art .chat .them { background: var(--bg-soft); }
.tp-art .chat .sys { background: #e4f6ee; color: #1a7a52; font-weight: 600; max-width: 100%; }
.tp-art .steps-mini { display: flex; gap: 6px; margin-bottom: 12px; }
.tp-art .steps-mini span { flex: 1; text-align: center; padding: 7px 4px; border-radius: 8px; background: var(--bg-soft); border: 1px solid var(--line); font-size: 12px; }
.tp-art .steps-mini .done { background: #e4f6ee; border-color: #bfe8d4; color: #1a7a52; }
.tp-art .steps-mini .cur { background: var(--brand); border-color: var(--brand); color: #fff; }
.tp-art .bars { display: flex; align-items: flex-end; gap: 8px; height: 120px; margin-bottom: 14px; }
.tp-art .bars i { flex: 1; height: var(--h); background: linear-gradient(180deg, #da9994, var(--brand)); border-radius: 6px 6px 0 0; transform-origin: bottom; animation: rise .9s cubic-bezier(.2,.7,.2,1) both; }
.tp-art .bars i:nth-child(2) { animation-delay: .06s } .tp-art .bars i:nth-child(3) { animation-delay: .12s } .tp-art .bars i:nth-child(4) { animation-delay: .18s } .tp-art .bars i:nth-child(5) { animation-delay: .24s } .tp-art .bars i:nth-child(6) { animation-delay: .3s } .tp-art .bars i:nth-child(7) { animation-delay: .36s } .tp-art .bars i:nth-child(8) { animation-delay: .42s }
@keyframes rise { from { transform: scaleY(0); } }
.tp-art .chips span { animation: none; }

/* ---------- 工作流：时间线 ---------- */
.timeline { list-style: none; margin: 0; padding: 26px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.timeline::before { content: ""; position: absolute; left: 12.5%; right: 12.5%; top: 26px; height: 2px; background: var(--line); }
.timeline::after { content: ""; position: absolute; left: 12.5%; top: 26px; height: 2px; width: 0; background: linear-gradient(90deg, var(--brand), var(--accent)); transition: width 1.6s cubic-bezier(.2,.7,.2,1) .3s; }
.timeline.in::after { width: 75%; }
.timeline li { position: relative; text-align: center; padding: 34px 16px 0; }
.timeline li i { position: absolute; top: 0; left: 50%; transform: translate(-50%, -50%); width: 54px; height: 54px; border-radius: 50%; background: #fff; border: 2px solid var(--line); display: grid; place-items: center; font-style: normal; font-weight: 800; color: var(--brand); transition: border-color .3s, box-shadow .3s; }
.timeline li i::before { counter-increment: none; }
.timeline li:nth-child(1) i::before { content: "1"; } .timeline li:nth-child(2) i::before { content: "2"; } .timeline li:nth-child(3) i::before { content: "3"; } .timeline li:nth-child(4) i::before { content: "4"; }
.timeline li:hover i { border-color: var(--brand); box-shadow: 0 0 0 8px rgba(185,41,45,.12); }
.timeline h3 { font-size: 19px; margin: 12px 0 8px; }
.timeline p { color: var(--muted); font-size: 14px; }
.timeline .where { display: inline-block; margin-top: 12px; font-size: 12px; font-weight: 600; color: var(--brand); background: #f7f4f0; padding: 3px 10px; border-radius: 999px; }

/* ---------- 文档：编号列表 ---------- */
.doc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.doc-list a { display: grid; grid-template-columns: 40px 1fr 24px; align-items: center; gap: 14px; padding: 16px 18px; border-radius: 14px; background: #fff; border: 1px solid var(--line); transition: transform .2s, box-shadow .2s, border-color .2s; }
.doc-list a:hover { transform: translateX(6px); box-shadow: var(--shadow); border-color: var(--brand); }
.doc-list b { font-family: ui-monospace, Menlo, monospace; font-size: 13px; color: var(--faint); }
.doc-list strong { display: block; font-size: 15.5px; }
.doc-list span { font-size: 13px; color: var(--muted); }
.doc-list em { font-style: normal; color: var(--brand); font-weight: 700; transition: transform .2s; }
.doc-list a:hover em { transform: translateX(4px); }

/* 下载卡悬停 */
.dl { transition: transform .25s, box-shadow .25s; }
.dl:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(0,0,0,.25); }

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .reveal, .slide-inner > * { opacity: 1 !important; transform: none !important; transition: none !important; animation: none !important; }
  .slide-bg svg, .slide-bg [filter], .orbit, .chips span, .tp-art .bars i, .tp-art .prog span { animation: none !important; }
}

/* ---------- 响应式补充 ---------- */
@media (max-width: 1080px) {
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }
  .stat:nth-child(2) { border-right: 0; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento-card.big { grid-column: span 2; grid-template-columns: 1fr; }
  .bento-art { min-height: 200px; }
  .tabs { grid-template-columns: 1fr; }
  .tab-list { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .tab-list button { flex: none; grid-template-columns: 1fr; }
  .tab-list button b, .tab-list button small { display: none; }
  .tab-progress { display: none; }
  .tab-panels { min-height: 0; }
  .tab-panel { position: relative; display: none; padding: 28px; grid-template-columns: 1fr; }
  .tab-panel.is-active { display: grid; }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .timeline::before, .timeline::after { display: none; }
}
@media (max-width: 760px) {
  .band-head { flex-direction: column; gap: 4px; }
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: 0; margin-right: 0; padding-right: 0; }
  .bento { grid-template-columns: 1fr; }
  .bento-card.big, .bento-card.wide { grid-column: span 1; grid-template-columns: 1fr; }
  .bento-card.tall, .bento-card.big { grid-row: span 1; }
  .timeline { grid-template-columns: 1fr; }
}