:root {
  --bg: #f6f1e7;
  --paper: #fffaf0;
  --ink: #14211c;
  --muted: #65726b;
  --line: rgba(20, 33, 28, .12);
  --dark: #10231d;
  --green: #2bbd84;
  --gold: #d9a842;
  --blue: #4c8fd8;
  --rose: #df6f8f;
  --shadow: 0 24px 70px rgba(36, 38, 32, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 6% 8%, rgba(43, 189, 132, .14), transparent 26rem),
    radial-gradient(circle at 92% 12%, rgba(217, 168, 66, .18), transparent 28rem),
    linear-gradient(180deg, #faf7ef 0%, var(--bg) 100%);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(20,33,28,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(20,33,28,.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.55), transparent 72%);
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }

.site-header {
  position: sticky;
  top: 18px;
  z-index: 20;
  width: min(1440px, calc(100% - 48px));
  margin: 18px auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 18px;
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 26px;
  background: rgba(255, 250, 240, .82);
  box-shadow: 0 18px 60px rgba(31, 35, 28, .1);
  backdrop-filter: blur(18px);
}

.brand { display: flex; align-items: center; gap: 14px; min-width: max-content; }
.brand-mark {
  position: relative;
  width: 48px;
  height: 48px;
  overflow: hidden;
  border-radius: 16px;
  background: linear-gradient(145deg, #13261f 0%, #245240 52%, #e4b95b 100%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.3), 0 14px 30px rgba(22,55,42,.22);
}
.brand-mark::before {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 13px;
  height: 19px;
  background: #fff5d6;
  clip-path: polygon(0 100%, 26% 48%, 42% 70%, 63% 18%, 100% 100%);
}
.brand-mark::after {
  content: "AI";
  position: absolute;
  right: 7px;
  top: 7px;
  color: #fff5d6;
  font-size: 9px;
  font-weight: 900;
}
.brand-text { font-size: 19px; font-weight: 900; letter-spacing: .01em; white-space: nowrap; }

.nav-links { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 14px; }
.nav-links a { padding: 10px 13px; border-radius: 999px; transition: .2s; }
.nav-links a:hover { color: var(--ink); background: rgba(20,33,28,.06); }
.nav-cta, .primary-action, .inline-ask button, .chat-form button {
  border: 0;
  border-radius: 999px;
  color: #fffaf0;
  background: var(--dark);
  font-weight: 800;
  box-shadow: 0 12px 26px rgba(16,35,29,.18);
}
.nav-cta { padding: 12px 18px; white-space: nowrap; }

main { position: relative; z-index: 1; width: min(1440px, calc(100% - 48px)); margin: 0 auto; }
.hero {
  min-height: 680px;
  display: grid;
  grid-template-columns: minmax(500px, .9fr) minmax(620px, 1.1fr);
  align-items: center;
  gap: 54px;
  padding: 64px 0 72px;
}
.eyebrow, .section-head p, .contact-section p {
  margin: 0 0 16px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .16em;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(42px, 4.2vw, 68px);
  line-height: 1.08;
  letter-spacing: -.045em;
}
.lead { max-width: 720px; margin: 24px 0 0; color: var(--muted); font-size: 18px; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.primary-action, .secondary-action { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 14px 20px; border-radius: 999px; font-weight: 800; }
.secondary-action { border: 1px solid var(--line); color: var(--ink); background: rgba(255,255,255,.55); }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; max-width: 620px; margin-top: 34px; }
.hero-facts div { padding: 18px; border: 1px solid rgba(255,255,255,.75); border-radius: 22px; background: rgba(255,250,240,.68); box-shadow: 0 12px 35px rgba(31,35,28,.08); }
.hero-facts b { display: block; margin-bottom: 6px; color: var(--dark); font-size: 32px; }
.hero-facts span { color: var(--muted); }

.store-shelf {
  padding: 26px;
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 34px;
  background:
    linear-gradient(145deg, rgba(255,250,240,.92), rgba(255,255,255,.58)),
    radial-gradient(circle at 100% 0%, rgba(43,189,132,.16), transparent 28rem);
  box-shadow: var(--shadow);
}
.shelf-head { display: flex; align-items: end; justify-content: space-between; margin-bottom: 18px; }
.shelf-head span { color: var(--gold); font-size: 12px; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
.shelf-head b { font-size: 28px; letter-spacing: -.04em; }
.shelf-item {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  align-items: center;
  gap: 16px;
  min-height: 96px;
  margin-top: 12px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255,255,255,.62);
  transition: .2s;
}
.shelf-item:hover { transform: translateY(-3px); border-color: rgba(16,35,29,.28); box-shadow: 0 18px 42px rgba(31,35,28,.1); }
.shelf-item em { color: var(--gold); font-size: 25px; font-style: normal; font-weight: 900; }
.shelf-item b { display: block; margin-bottom: 6px; font-size: 20px; }
.shelf-item span { color: var(--muted); }
.shelf-item i { padding: 9px 12px; border-radius: 999px; color: #fffaf0; background: var(--dark); font-style: normal; font-weight: 800; font-size: 13px; }
.shelf-item.deploying i { background: var(--rose); }
.shelf-item.active { background: #10231d; color: #fffaf0; }
.shelf-item.active span { color: rgba(255,250,240,.72); }

.products-section, .why-section, .scenario-section, .process-section, .combo-section, .industry-section, .dashboard-section, .urgency-section, .must-section, .faq-section, .roadmap-section, .contact-section { padding: 40px 0 88px; }
.section-head {
  display: grid;
  grid-template-columns: 1fr minmax(320px, 520px);
  align-items: end;
  gap: 32px;
  margin-bottom: 24px;
}
.section-head h2, .contact-section h2 { margin: 0; font-size: clamp(30px, 3vw, 46px); line-height: 1.15; letter-spacing: -.04em; }
.section-head span { color: var(--muted); line-height: 1.8; }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.product-card {
  min-height: 365px;
  padding: 22px;
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 30px;
  background: rgba(255,250,240,.72);
  box-shadow: 0 18px 50px rgba(31,35,28,.08);
}
.product-top { display: flex; align-items: center; justify-content: space-between; }
.product-top span { font-size: 31px; font-weight: 900; }
.product-top em { padding: 7px 10px; border-radius: 999px; color: var(--muted); background: rgba(20,33,28,.06); font-style: normal; font-size: 12px; }
.product-card.green .product-top span { color: var(--green); }
.product-card.gold .product-top span { color: var(--gold); }
.product-card.blue .product-top span { color: var(--blue); }
.product-card.rose .product-top span { color: var(--rose); }
.product-card h3 { margin: 50px 0 14px; font-size: 24px; line-height: 1.25; }
.product-card p { color: var(--muted); line-height: 1.78; }
.product-card ul { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 18px 0 24px; list-style: none; }
.product-card li { padding: 7px 10px; border-radius: 999px; background: rgba(20,33,28,.06); color: var(--muted); font-size: 12px; }
.product-card a { display: block; margin-top: auto; padding: 13px 16px; border-radius: 16px; color: #fffaf0; background: var(--dark); font-weight: 800; text-align: center; }

.why-grid, .roadmap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.why-grid div, .roadmap-grid article, .scenario-grid article, .process-line div {
  padding: 24px;
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 28px;
  background: rgba(255,250,240,.66);
  box-shadow: 0 16px 42px rgba(31,35,28,.07);
}
.why-grid b, .roadmap-grid b { display: block; margin-bottom: 10px; font-size: 22px; }
.why-grid span, .roadmap-grid p { color: var(--muted); line-height: 1.8; }
.roadmap-grid span { display: inline-grid; place-items: center; width: 44px; height: 44px; margin-bottom: 22px; border-radius: 14px; color: #fffaf0; background: var(--dark); font-weight: 900; }

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.scenario-grid article {
  min-height: 245px;
}
.scenario-grid span {
  display: block;
  margin-bottom: 46px;
  color: var(--gold);
  font-size: 28px;
  font-weight: 900;
}
.scenario-grid b {
  display: block;
  margin-bottom: 12px;
  font-size: 22px;
}
.scenario-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.process-line {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  position: relative;
}
.process-line div {
  min-height: 220px;
  background: rgba(255,255,255,.68);
}
.process-line em {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 42px;
  border-radius: 50%;
  color: #fffaf0;
  background: var(--dark);
  font-style: normal;
  font-weight: 900;
}
.process-line b {
  display: block;
  margin-bottom: 10px;
  font-size: 22px;
}
.process-line span {
  color: var(--muted);
  line-height: 1.8;
}

.combo-card {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: 24px;
  padding: 32px;
  border-radius: 34px;
  background:
    linear-gradient(135deg, rgba(16,35,29,.96), rgba(29,68,52,.94)),
    radial-gradient(circle at 92% 0%, rgba(217,168,66,.24), transparent 28rem);
  color: #fffaf0;
  box-shadow: var(--shadow);
}
.combo-card p {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.combo-card h2 {
  margin: 0;
  font-size: clamp(30px, 3vw, 46px);
  line-height: 1.15;
  letter-spacing: -.04em;
}
.combo-list {
  display: grid;
  gap: 12px;
}
.combo-list div {
  padding: 18px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 22px;
  background: rgba(255,255,255,.07);
}
.combo-list b {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}
.combo-list span {
  color: rgba(255,250,240,.68);
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.industry-grid article {
  min-height: 240px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 28px;
  background: rgba(255,250,240,.66);
  box-shadow: 0 16px 42px rgba(31,35,28,.07);
}
.industry-grid b {
  display: block;
  margin-bottom: 12px;
  font-size: 22px;
}
.industry-grid span {
  display: block;
  color: var(--muted);
  line-height: 1.8;
}
.industry-grid ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 26px 0 0;
  list-style: none;
}
.industry-grid li {
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--dark);
  background: rgba(20,33,28,.07);
  font-size: 12px;
}

.dashboard-section {
  display: grid;
  grid-template-columns: .78fr 1fr;
  gap: 24px;
  align-items: center;
}
.dashboard-copy p, .urgency-hero p, .must-card p {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.dashboard-copy h2, .urgency-hero h2, .must-card h2 {
  margin: 0;
  font-size: clamp(30px, 3vw, 46px);
  line-height: 1.15;
  letter-spacing: -.04em;
}
.dashboard-copy span, .urgency-hero span {
  display: block;
  margin-top: 18px;
  color: var(--muted);
  line-height: 1.8;
}
.dashboard-panel {
  padding: 24px;
  border-radius: 32px;
  background: var(--dark);
  color: #fffaf0;
  box-shadow: var(--shadow);
}
.dash-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 16px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.dash-row span { color: rgba(255,250,240,.66); }
.dash-row b { font-size: 28px; }
.dash-row em {
  padding: 7px 10px;
  border-radius: 999px;
  color: var(--dark);
  background: var(--gold);
  font-style: normal;
  font-size: 12px;
  font-weight: 900;
}
.dash-bars {
  display: flex;
  align-items: end;
  gap: 12px;
  height: 150px;
  padding-top: 24px;
}
.dash-bars i {
  flex: 1;
  height: var(--h);
  min-height: 24px;
  border-radius: 12px 12px 4px 4px;
  background: linear-gradient(180deg, var(--gold), rgba(255,250,240,.22));
}

.urgency-section {
  display: grid;
  grid-template-columns: .86fr 1.14fr;
  gap: 24px;
  align-items: start;
}
.urgency-hero {
  position: sticky;
  top: 110px;
  padding: 30px;
  border-radius: 32px;
  background: rgba(255,250,240,.68);
  box-shadow: 0 16px 42px rgba(31,35,28,.07);
}
.urgency-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.urgency-grid article {
  min-height: 250px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 28px;
  background: rgba(255,250,240,.66);
  box-shadow: 0 16px 42px rgba(31,35,28,.07);
}
.urgency-grid span {
  display: block;
  margin-bottom: 42px;
  color: var(--rose);
  font-size: 30px;
  font-weight: 900;
}
.urgency-grid h3 {
  margin: 0 0 12px;
  font-size: 23px;
}
.urgency-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.must-card {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  gap: 24px;
  padding: 32px;
  border-radius: 34px;
  background:
    radial-gradient(circle at 0% 0%, rgba(223,111,143,.24), transparent 28rem),
    linear-gradient(135deg, #1a1715, #10231d);
  color: #fffaf0;
  box-shadow: var(--shadow);
}
.must-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.must-list div {
  padding: 18px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 22px;
  background: rgba(255,255,255,.07);
}
.must-list b {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}
.must-list span {
  color: rgba(255,250,240,.68);
  line-height: 1.7;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.faq-grid details {
  padding: 20px;
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 24px;
  background: rgba(255,250,240,.66);
  box-shadow: 0 16px 42px rgba(31,35,28,.06);
}
.faq-grid summary {
  cursor: pointer;
  font-size: 19px;
  font-weight: 900;
}
.faq-grid p {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(320px, .72fr) minmax(560px, 1fr);
  gap: 24px;
  align-items: stretch;
  margin-bottom: 70px;
}
.contact-copy {
  padding: 32px;
  border-radius: 32px;
  background:
    radial-gradient(circle at 0% 0%, rgba(217,168,66,.18), transparent 24rem),
    rgba(255,250,240,.7);
  box-shadow: 0 16px 42px rgba(31,35,28,.07);
}
.contact-copy h2 {
  margin: 0;
  font-size: clamp(30px, 3vw, 48px);
  line-height: 1.12;
  letter-spacing: -.04em;
}
.contact-copy span {
  display: block;
  margin-top: 18px;
  color: var(--muted);
  line-height: 1.8;
}
.contact-points {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}
.contact-points em {
  display: block;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(16,35,29,.06);
  color: var(--dark);
  font-style: normal;
}
.contact-card {
  padding: 28px;
  border-radius: 32px;
  background: #fffaf0;
  box-shadow: 0 18px 50px rgba(31,35,28,.1);
}
.inline-ask { display: flex; gap: 10px; }
.inline-ask input, .chat-form input { min-width: 0; flex: 1; border: 1px solid rgba(20,33,28,.14); outline: none; }
.inline-ask input { padding: 15px 16px; border-radius: 999px; color: var(--ink); background: white; }
.inline-ask button { padding: 0 20px; background: var(--dark); color: #fffaf0; }
.inline-answer {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.8;
}
.contact-info {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 14px;
  margin-top: 18px;
}
.contact-info > a, .contact-info > div {
  min-height: 112px;
  padding: 14px;
  border: 1px solid rgba(20,33,28,.1);
  border-radius: 22px;
  background: white;
}
.contact-info span {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
}
.contact-info a {
  color: var(--dark);
}
.phone-card {
  display: grid;
  align-content: center;
}
.phone-card b {
  display: block;
  font-size: 20px;
  letter-spacing: .02em;
}
.phone-card small {
  display: block;
  margin-top: 8px;
  color: var(--gold);
  font-size: 13px;
}
.qr-placeholder {
  display: grid;
  place-items: center;
  text-align: center;
}
.qr-placeholder img {
  width: 86px;
  height: 86px;
  padding: 6px;
  border-radius: 14px;
  background: #fff;
}

.chat-widget { position: fixed; right: 22px; bottom: 88px; z-index: 30; width: min(390px, calc(100vw - 32px)); height: 540px; display: none; flex-direction: column; overflow: hidden; border-radius: 28px; background: #fffaf0; box-shadow: var(--shadow); }
.chat-widget.open { display: flex; }
.chat-widget header { display: flex; align-items: center; gap: 12px; padding: 14px; border-bottom: 1px solid var(--line); }
.chat-widget header div:nth-child(2) { flex: 1; }
.chat-logo { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 15px; color: #fffaf0; background: var(--dark); font-weight: 900; }
.chat-widget small { display: block; color: var(--muted); }
.chat-widget header button { width: 34px; height: 34px; border: 0; border-radius: 50%; background: rgba(20,33,28,.06); }
.messages { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; padding: 16px; }
.msg { max-width: 86%; padding: 12px 14px; border-radius: 18px; color: var(--muted); background: rgba(20,33,28,.06); line-height: 1.65; }
.msg.user { align-self: flex-end; color: #fffaf0; background: var(--dark); }
.chat-form { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--line); }
.chat-form input { padding: 12px 14px; border-radius: 999px; color: var(--ink); background: white; }
.chat-form button { padding: 0 16px; }
.bubble { position: fixed; right: 22px; bottom: 22px; z-index: 25; display: flex; align-items: center; gap: 8px; padding: 12px 16px; border: 0; border-radius: 999px; color: #fffaf0; background: var(--dark); font-weight: 900; box-shadow: 0 16px 34px rgba(16,35,29,.2); }
.bubble span { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); }
.toast { position: fixed; left: 50%; bottom: 30px; z-index: 50; opacity: 0; transform: translate(-50%, 18px); pointer-events: none; padding: 12px 16px; border-radius: 999px; color: #fffaf0; background: var(--dark); transition: .2s; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 1180px) {
  .nav-links { display: none; }
  .hero, .dashboard-section, .urgency-section, .must-card, .contact-section { grid-template-columns: 1fr; }
  .urgency-hero { position: static; }
  .product-grid, .scenario-grid, .process-line, .industry-grid, .faq-grid { grid-template-columns: repeat(2, 1fr); }
  .inline-answer, .contact-info { grid-column: auto; }
}
@media (max-width: 720px) {
  .site-header, main { width: min(100% - 24px, 1440px); }
  .brand-text { max-width: 220px; overflow: hidden; text-overflow: ellipsis; font-size: 15px; }
  .hero { grid-template-columns: 1fr; padding-top: 44px; }
  h1 { font-size: 38px; }
  .lead { font-size: 16px; }
  .hero-facts, .product-grid, .why-grid, .scenario-grid, .process-line, .combo-card, .industry-grid, .urgency-grid, .must-list, .faq-grid, .roadmap-grid, .section-head, .contact-info { grid-template-columns: 1fr; }
  .shelf-item { grid-template-columns: 46px 1fr; }
  .shelf-item i { grid-column: 2; width: max-content; }
  .inline-ask { flex-direction: column; }
  .inline-ask button { min-height: 48px; }
  .contact-info { grid-template-columns: 1fr; }
}