/* 官网首页（#22）。品牌色和后台一致：蓝 #2457C5、橙 #E8630A、黄 #FFC845。 */
:root {
  --blue: #2457C5; --blue-dark: #1D4BAE; --blue-soft: #EFF4FF;
  --cta: #E8630A; --cta-dark: #C9540A; --cta-shadow: #B54708;
  --yellow: #FFC845; --yellow-soft: #FFF6DC; --amber-ink: #93370D;
  --green: #067647; --green-soft: #ECFDF3; --purple: #6D28D9;
  --ink: #101828; --muted: #475467; --faint: #667085; --line: #EAECF0; --line-strong: #D0D5DD; --bg: #F9FAFB;
  --r: 24px; --r-sm: 16px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #fff; color: var(--ink); font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", Inter, system-ui, -apple-system, sans-serif; line-height: 1.5; -webkit-font-smoothing: antialiased; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }
img { max-width: 100%; height: auto; display: block; }
svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
h1, h2, h3 { margin: 0; letter-spacing: -.02em; font-weight: 900; line-height: 1.2; }
h2 { font-size: 40px; margin-bottom: 14px; }
h3 { font-size: 32px; }
h1 em, h2 em, .brand-name em { font-style: normal; color: var(--blue); }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 860px; }
.center { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.lead { font-size: 18px; line-height: 1.65; color: var(--muted); margin: 0; }
.lead-light { color: rgba(255,255,255,.85); }

/* 按钮、小标签 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 52px; padding: 0 24px; border-radius: 999px; font-weight: 700; font-size: 16px; border: 2px solid transparent; cursor: pointer; font-family: inherit; white-space: nowrap; }
.btn svg { width: 20px; height: 20px; }
.btn-cta { background: var(--cta); color: #fff; box-shadow: 0 4px 0 var(--cta-shadow); }
.btn-cta:hover { background: var(--cta-dark); color: #fff; }
.btn-cta:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--cta-shadow); }
.btn-outline { background: #fff; color: var(--ink); border-color: var(--ink); }
.btn-outline:hover { background: var(--bg); color: var(--ink); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; color: #fff; }
.btn-ghost { background: transparent; color: #344054; height: 44px; padding: 0 12px; }
.btn-sm { height: 44px; padding: 0 20px; font-size: 15px; box-shadow: none; }
.btn-lg { height: 56px; font-size: 17px; }
.chip { display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 14px; border-radius: 999px; font-size: 13px; font-weight: 700; white-space: nowrap; }
.chip-dark { background: var(--ink); color: var(--yellow); }
.chip-blue { background: var(--blue-soft); color: var(--blue-dark); }
.chip-amber { background: var(--yellow-soft); color: var(--amber-ink); }
.chip-green { background: var(--green-soft); color: var(--green); }
.chip-yellow { background: var(--yellow); color: var(--ink); }
.chip-glass { background: rgba(255,255,255,.16); color: #fff; }
.ico { width: 52px; height: 52px; border-radius: 16px; display: flex; align-items: center; justify-content: center; flex: none; }
.ico svg { width: 26px; height: 26px; }
.ico-lg { width: 64px; height: 64px; border-radius: 20px; color: #fff; }
.ico-lg svg { width: 32px; height: 32px; }
.ico-amber { background: var(--yellow-soft); color: var(--cta-shadow); }
.ico-green { background: var(--green-soft); color: var(--green); }
.ico-blue { background: var(--blue-soft); color: var(--blue); }
.bg-orange { background: var(--cta); } .bg-green { background: var(--green); } .bg-blue { background: var(--blue); } .bg-purple { background: var(--purple); }

/* 右侧悬浮 */
.side { position: fixed; right: 20px; top: 40%; display: flex; flex-direction: column; gap: 10px; z-index: 20; }
.side-btn { width: 64px; height: 64px; border-radius: 18px; background: #fff; border: 2px solid var(--line); box-shadow: 0 8px 24px -8px rgba(16,24,40,.25); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; font-size: 11px; font-weight: 700; color: var(--ink); }
.side-btn svg { width: 22px; height: 22px; color: var(--blue); }
.side-btn:nth-child(2) svg { color: var(--green); }
.side-cta { background: var(--cta); border-color: var(--cta); color: #fff; }
.side-cta svg { color: #fff; }
.side-btn:hover { transform: translateY(-2px); }

/* 顶部 */
.top { background: #fff; position: sticky; top: 0; z-index: 10; border-bottom: 1px solid transparent; }
.top.scrolled { border-bottom-color: var(--line); }
.top-in { height: 76px; display: flex; align-items: center; gap: 36px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
.brand-mark { width: 40px; height: 40px; border-radius: 12px; background: var(--blue); display: flex; align-items: center; justify-content: center; flex: none; }
.brand-mark svg { width: 26px; height: 26px; color: #fff; }
.brand-mark .star { fill: var(--yellow); stroke: var(--yellow); stroke-width: 1; }
.brand-name { font-size: 22px; font-weight: 900; letter-spacing: -.01em; white-space: nowrap; }
.nav { display: flex; gap: 28px; font-size: 15px; font-weight: 700; flex: 1; }
.nav a { color: #344054; white-space: nowrap; }
.nav a:hover { color: var(--blue); }
.nav .nav-login { display: none; }
.top-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.lang { display: flex; border: 2px solid var(--line); border-radius: 999px; padding: 3px; }
.lang button { white-space: nowrap; border: 0; background: transparent; color: var(--muted); border-radius: 999px; height: 28px; padding: 0 12px; font-family: inherit; font-weight: 700; font-size: 13px; cursor: pointer; }
.lang button.on { background: var(--ink); color: #fff; }
.burger { display: none; width: 44px; height: 44px; border: 0; background: transparent; flex-direction: column; justify-content: center; gap: 5px; align-items: center; cursor: pointer; padding: 0; }
.burger span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; }

/* 首屏 */
.hero { padding: 56px 0 0; position: relative; overflow: hidden; }
.blob { position: absolute; border-radius: 50%; z-index: 0; }
.blob-a { left: -120px; top: 40px; width: 360px; height: 360px; background: var(--yellow-soft); }
.blob-b { right: -140px; top: 140px; width: 420px; height: 420px; background: var(--blue-soft); }
.hero .wrap { position: relative; z-index: 1; }
.hero-in { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 24px; }
h1 { font-size: 64px; line-height: 1.12; letter-spacing: -.03em; max-width: 900px; }
.hero .lead { font-size: 20px; max-width: 680px; }
.who { margin: 8px 0 -8px; font-size: 15px; font-weight: 700; color: var(--muted); }
.roles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; width: 100%; max-width: 900px; }
.role { background: #fff; border: 2px solid var(--line-strong); border-radius: var(--r); padding: 24px 16px; display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--ink); transition: transform .15s, border-color .15s; }
.role:hover { transform: translateY(-3px); border-color: var(--blue); color: var(--ink); }
.role strong { font-size: 18px; }
.role .go { font-size: 14px; color: var(--blue); font-weight: 700; }
.facts { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; font-size: 15px; font-weight: 700; color: #344054; margin-top: 4px; }
.facts i { color: var(--line-strong); font-style: normal; }
.tv-wrap { position: relative; max-width: 980px; margin: 48px auto 0; }
.tv { background: var(--ink); border-radius: 28px; padding: 16px 16px 28px; box-shadow: 0 32px 64px -24px rgba(16,24,40,.4); }
.tv img { border-radius: 14px; width: 100%; }
.float { position: absolute; background: #fff; border: 2px solid var(--line); border-radius: 18px; padding: 12px 16px; box-shadow: 0 12px 32px -12px rgba(16,24,40,.3); display: flex; align-items: center; gap: 10px; font-weight: 700; }
.float-l { left: -28px; top: 36px; transform: rotate(-4deg); }
.float-r { right: -24px; bottom: 48px; transform: rotate(3deg); background: var(--cta); border-color: var(--cta); color: #fff; }
.star-ico { width: 26px; height: 26px; fill: var(--yellow); stroke: var(--cta-shadow); stroke-width: 1.5; }

/* 蓝色带：三步 */
.band { background: var(--blue); color: #fff; padding: 88px 0 96px; margin-top: 72px; }
.band h2 { color: #fff; }
.band h2 em { color: var(--yellow); }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 48px; align-items: end; }
.step { display: flex; flex-direction: column; gap: 16px; align-items: center; text-align: center; }
.tilt { background: #fff; border-radius: 18px; padding: 10px; box-shadow: 0 24px 48px -16px rgba(0,0,0,.4); width: 100%; }
.tilt img { border-radius: 10px; width: 100%; }
.tilt-a { transform: rotate(-3deg); } .tilt-b { transform: rotate(2deg); } .tilt-c { transform: rotate(-2deg); }
.step-label { display: flex; align-items: center; gap: 10px; font-size: 18px; }
.step-label b { width: 32px; height: 32px; border-radius: 10px; background: var(--yellow); color: var(--ink); font-weight: 900; display: flex; align-items: center; justify-content: center; flex: none; }

/* 功能：左右交替 */
.features { padding: 96px 0 40px; }
.features .wrap { display: flex; flex-direction: column; gap: 96px; }
.frow { display: flex; gap: 64px; align-items: center; }
.frow.rev { flex-direction: row-reverse; }
.frow > div { flex: 1 1 440px; min-width: 0; }
.ftext { display: flex; flex-direction: column; gap: 18px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.shots4 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.shots4 img, .shot { border-radius: var(--r-sm); border: 1px solid var(--line); }
.shot { border-radius: var(--r); border: 2px solid var(--line); }
.fmedia { display: flex; flex-direction: column; gap: 14px; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.stats div { background: var(--yellow-soft); border-radius: 18px; padding: 16px; text-align: center; display: flex; flex-direction: column; gap: 2px; }
.stats b { font-size: 30px; font-weight: 900; color: var(--amber-ink); }
.stats span { font-size: 13px; color: var(--muted); font-weight: 700; }
.report { background: var(--bg); border: 2px solid var(--line); border-radius: 28px; padding: 28px; display: flex; flex-direction: column; gap: 16px; }
.report-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 18px; }
.words { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.words div { background: #fff; border-radius: 16px; padding: 14px 8px; text-align: center; border: 2px solid var(--line); display: flex; flex-direction: column; }
.words b { font-size: 28px; font-weight: 900; }
.words span { font-size: 12px; color: var(--faint); }
.report-btns { display: flex; gap: 10px; }
.report-btns .btn { flex: 1; height: 44px; font-size: 14px; box-shadow: none; }

/* 机构后台：拼贴 */
.admin { padding: 80px 0; }
.bento { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 40px; }
.tile { border-radius: var(--r); padding: 28px; display: flex; flex-direction: column; gap: 12px; }
.tile strong { font-size: 20px; }
.tile > span:last-child { color: var(--muted); }
.tile .ico { background: #fff; }
.tile-amber { background: var(--yellow-soft); } .tile-amber .ico { color: var(--cta-shadow); }
.tile-green { background: var(--green-soft); } .tile-green .ico { color: var(--green); }
.tile-blue { background: var(--blue-soft); } .tile-blue .ico { color: var(--blue); }
.tile-grey { background: var(--bg); } .tile-grey .ico { color: var(--purple); }
.tile-dark { background: var(--ink); color: #fff; position: relative; overflow: hidden; min-height: 300px; justify-content: flex-end; }
.tile-dark > span:last-child { color: #98A2B3; max-width: 360px; }
.tile-dark img { position: absolute; right: -40px; top: 24px; width: 70%; border-radius: 12px; opacity: .9; }
.tile-dark strong, .tile-dark > span { position: relative; }
.tile-wide { grid-column: span 2; }

/* 套餐 */
.plans { background: var(--bg); padding: 88px 0; }
.plans .lead { max-width: 640px; }
.plan-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 40px; }
.plan { background: #fff; border: 2px solid var(--line); border-radius: var(--r); padding: 32px; display: flex; flex-direction: column; gap: 14px; position: relative; }
.plan small { font-size: 13px; font-weight: 800; color: var(--faint); letter-spacing: .08em; }
.plan strong { font-size: 28px; }
.plan > span { color: var(--muted); line-height: 1.6; }
.plan .btn { margin-top: 8px; }
.plan-dark { background: var(--ink); color: #fff; border-color: var(--ink); }
.plan-dark small { color: #98A2B3; } .plan-dark > span { color: #98A2B3; }
.plan-dark .btn-cta { box-shadow: none; }
.plan-tag { position: absolute; top: -15px; right: 24px; }
.note { text-align: center; margin: 24px 0 0; color: var(--muted); font-size: 15px; }

/* 常见问题 */
.faq { padding: 88px 0; }
.faq-list { margin-top: 32px; border-bottom: 2px solid var(--line); }
.faq-list > div { border-top: 2px solid var(--line); padding: 22px 0; display: flex; flex-direction: column; gap: 8px; }
.faq-list strong { font-size: 18px; }
.faq-list span { color: var(--muted); line-height: 1.6; }

/* 预约演示 */
.contact { background: var(--yellow); padding: 88px 0; }
.contact-in { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 56px; align-items: center; }
.contact-text { display: flex; flex-direction: column; gap: 20px; align-items: flex-start; }
.contact h2 { font-size: 44px; }
.contact .lead { color: #344054; }
.ways { color: #344054; font-size: 15px; line-height: 1.9; }
.ways a { color: var(--ink); font-weight: 700; text-decoration: underline; }
.form { background: #fff; border-radius: var(--r); padding: 32px; display: flex; flex-direction: column; gap: 16px; box-shadow: 0 24px 48px -16px rgba(16,24,40,.3); }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 14px; font-weight: 700; color: #344054; }
.field input { height: 50px; border: 2px solid var(--line-strong); border-radius: 14px; padding: 0 16px; font-size: 16px; font-family: inherit; color: var(--ink); background: #fff; }
.field input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 4px rgba(36,87,197,.16); }
.form-msg { margin: 0; font-size: 15px; font-weight: 700; min-height: 1em; }
.form-msg.err { color: #D92D20; }
.form-msg.ok { color: var(--green); }
.tiny { margin: 0; font-size: 13px; color: var(--faint); text-align: center; }
.form-done { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 24px 0; }
.form-done .ico { background: var(--green-soft); color: var(--green); width: 64px; height: 64px; border-radius: 20px; }
.form-done strong { font-size: 22px; }

/* 页脚 */
.foot { background: var(--ink); color: #fff; padding: 48px 0; }
.foot-in { display: flex; flex-wrap: wrap; gap: 32px; align-items: flex-start; justify-content: space-between; }
.foot-brand { display: flex; flex-direction: column; gap: 10px; max-width: 360px; color: #98A2B3; font-size: 14px; }
.foot .brand { color: #fff; }
.foot .brand-name em { color: #fff; }
.foot-brand small { color: var(--faint); font-size: 13px; }
.foot-cols { display: flex; gap: 48px; flex-wrap: wrap; font-size: 14px; }
.foot-cols > div { display: flex; flex-direction: column; gap: 10px; }
.foot-cols a { color: #98A2B3; }
.foot-cols a:hover { color: #fff; }

@media (max-width: 1100px) {
  .top-in { gap: 20px; }
  .nav { gap: 18px; font-size: 14px; }
}

/* 手机 */
@media (max-width: 900px) {
  body { padding-bottom: 84px; }
  h1 { font-size: 40px; }
  h2 { font-size: 30px; }
  h3 { font-size: 26px; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 76px; background: #fff; border-bottom: 1px solid var(--line); flex-direction: column; gap: 0; padding: 8px 24px 16px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 0; border-top: 1px solid var(--line); }
  .nav .nav-login { display: block; }
  .nav-login-top { display: none; }
  .burger { display: flex; }
  .top-actions .btn-cta { display: none; }
  .roles { grid-template-columns: 1fr; }
  .float-l { left: 8px; top: -16px; } .float-r { right: 8px; bottom: -12px; }
  .tv { padding: 10px 10px 18px; border-radius: 20px; }
  .band { margin-top: 56px; padding: 64px 0; }
  .steps { grid-template-columns: 1fr; gap: 40px; }
  .features { padding: 64px 0 24px; }
  .features .wrap { gap: 64px; }
  .frow, .frow.rev { flex-direction: column; gap: 28px; }
  .bento, .plan-grid, .contact-in { grid-template-columns: 1fr; }
  .tile-wide { grid-column: auto; }
  .tile-dark img { position: static; width: 100%; opacity: 1; margin-bottom: 8px; }
  .tile-dark { min-height: 0; }
  .contact h2 { font-size: 32px; }
  .side { right: 10px; top: auto; bottom: 16px; flex-direction: row; }
  .side-btn { width: 56px; height: 56px; }
}