:root {
  --brand: #6251f3;
  --brand-deep: #4938d1;
  --cyan: #32c7d9;
  --ink: #15182a;
  --muted: #697086;
  --line: #e9eaf1;
  --soft: #f7f7fb;
  --white: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
button, input { font: inherit; }
.landing-shell { width: min(1200px, calc(100% - 48px)); margin: 0 auto; }

.landing-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(229, 231, 239, .82);
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(18px);
}

.landing-nav-inner {
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.landing-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #1d2032;
  font-size: 19px;
  font-weight: 850;
  text-decoration: none;
  white-space: nowrap;
}

.landing-mark { position: relative; width: 35px; height: 27px; }
.landing-mark::before, .landing-mark::after {
  content: "";
  position: absolute;
  width: 29px;
  height: 9px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--brand-deep), #7868ff);
  transform: skewX(-22deg);
}
.landing-mark::before { left: 0; top: 2px; }
.landing-mark::after { right: 0; bottom: 2px; }

.landing-links { display: flex; align-items: center; gap: 4px; }
.landing-links > a {
  padding: 9px 12px;
  border-radius: 8px;
  color: #4b5163;
  font-size: 13px;
  text-decoration: none;
}
.landing-links > a:hover,
.landing-links > a.active {
  color: var(--brand);
  background: #f5f3ff;
}

.about-nav-wrap { position: relative; }
.about-nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 9px 12px;
  border-radius: 8px;
  color: #4b5163;
  font-size: 13px;
  text-decoration: none;
}
.about-nav-trigger:hover,
.about-nav-trigger.active,
.about-nav-wrap:focus-within .about-nav-trigger {
  color: var(--brand);
  background: #f5f3ff;
}
.about-nav-trigger i { font-size: 10px; font-style: normal; transition: transform .2s ease; }
.about-nav-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 150px;
  padding: 8px;
  border: 1px solid rgba(226, 225, 238, .92);
  border-radius: 14px;
  background: rgba(255, 255, 255, .97);
  box-shadow: 0 18px 48px rgba(50, 45, 92, .14);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.about-nav-menu::before {
  content: "";
  position: absolute;
  top: -10px;
  right: 0;
  left: 0;
  height: 10px;
}
.about-nav-wrap:hover .about-nav-menu,
.about-nav-wrap:focus-within .about-nav-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.about-nav-wrap:hover .about-nav-trigger i,
.about-nav-wrap:focus-within .about-nav-trigger i { transform: rotate(180deg); }
.about-nav-menu a {
  display: block;
  padding: 10px 12px;
  border-radius: 9px;
  color: #4b5163;
  font-size: 13px;
  text-decoration: none;
}
.about-nav-menu a:hover,
.about-nav-menu a.active { color: var(--brand); background: #f0edff; }

.landing-actions { display: flex; align-items: center; gap: 9px; }
.nav-action {
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: #3d4355;
  background: #fff;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}
.nav-action.primary { color: #fff; border-color: #1f2130; background: #1f2130; }

/* 手机导航：Logo 右侧汉堡按钮 + 下拉面板 */
.landing-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  margin-left: 2px;
  margin-right: auto;
  padding: 0;
  border: 1px solid #e6e7ef;
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  flex-shrink: 0;
}
.landing-menu-toggle span {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: #2f3446;
  transition: transform .2s ease, opacity .2s ease;
}
.landing-nav.is-mobile-open .landing-menu-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.landing-nav.is-mobile-open .landing-menu-toggle span:nth-child(2) { opacity: 0; }
.landing-nav.is-mobile-open .landing-menu-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.landing-mobile-panel {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  z-index: 60;
  padding: 10px 14px 16px;
  border-bottom: 1px solid rgba(229, 231, 239, .92);
  background: rgba(255, 255, 255, .98);
  box-shadow: 0 18px 40px rgba(40, 36, 80, .12);
}
.landing-nav.is-mobile-open .landing-mobile-panel {
  display: block;
}
.landing-mobile-nav {
  width: min(1200px, calc(100% - 8px));
  margin: 0 auto;
  display: grid;
  gap: 4px;
}
.landing-mobile-link {
  display: block;
  padding: 12px 14px;
  border-radius: 10px;
  color: #3f4558;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}
.landing-mobile-link:hover,
.landing-mobile-link.active {
  color: var(--brand);
  background: #f5f3ff;
}
.landing-mobile-link.sub {
  padding-left: 26px;
  font-size: 14px;
  font-weight: 500;
  color: #5b6275;
}
.landing-mobile-group { margin-top: 4px; }
.landing-mobile-group-title {
  padding: 10px 14px 4px;
  color: #8a91a3;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
}
body.landing-nav-open { overflow: hidden; }

.landing-hero {
  position: relative;
  min-height: 720px;
  overflow: hidden;
  background:
    radial-gradient(circle at 18% 20%, rgba(62, 216, 208, .22), transparent 31%),
    radial-gradient(circle at 79% 18%, rgba(122, 101, 255, .21), transparent 34%),
    linear-gradient(180deg, #fbffff 0%, #f5f3ff 63%, #fff 100%);
}
.landing-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .35;
  pointer-events: none;
  background-image: linear-gradient(rgba(99, 81, 243, .06) 1px, transparent 1px), linear-gradient(90deg, rgba(99, 81, 243, .06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, #000, transparent 75%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  align-items: center;
  gap: 78px;
  min-height: 670px;
  padding: 78px 0 58px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  padding: 7px 12px;
  border: 1px solid rgba(98, 81, 243, .18);
  border-radius: 999px;
  color: #5848dc;
  background: rgba(255,255,255,.72);
  font-size: 12px;
  font-weight: 750;
}
.hero-badge i { width: 7px; height: 7px; border-radius: 50%; background: #2cc7a5; box-shadow: 0 0 0 5px rgba(44,199,165,.11); }
.hero-copy h1 { margin: 0; font-size: clamp(46px, 5.4vw, 72px); line-height: 1.08; letter-spacing: -.052em; }
.hero-copy h1 em { color: var(--brand); font-style: normal; }
.hero-copy > p { max-width: 610px; margin: 25px 0 31px; color: #61697d; font-size: 17px; line-height: 1.85; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  padding: 13px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: #353b4c;
  background: rgba(255,255,255,.82);
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
}
.hero-cta.primary { color: #fff; border-color: var(--brand); background: linear-gradient(120deg, var(--brand-deep), #7563ff); box-shadow: 0 12px 30px rgba(82,65,210,.2); }
.hero-note { margin-top: 18px; color: #8c94a6; font-size: 11px; }

.hero-console {
  position: relative;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.75);
  border-radius: 22px;
  background: rgba(255,255,255,.62);
  box-shadow: 0 32px 90px rgba(55,52,115,.18);
  backdrop-filter: blur(22px);
  transform: perspective(1400px) rotateY(-4deg) rotateX(2deg);
}
.console-window { overflow: hidden; border: 1px solid #e7e8f0; border-radius: 15px; background: #121525; }
.console-top { display: flex; align-items: center; gap: 6px; padding: 12px 15px; border-bottom: 1px solid rgba(255,255,255,.07); color: #8b93ab; font-size: 10px; }
.console-top i { width: 7px; height: 7px; border-radius: 50%; background: #ff7474; }
.console-top i:nth-child(2) { background: #f1c65a; }
.console-top i:nth-child(3) { background: #56d197; }
.console-top span { margin-left: auto; }
.console-main { padding: 25px; }
.console-label { color: #7f89a8; font-size: 10px; letter-spacing: .12em; }
.console-main h3 { margin: 8px 0 20px; color: #f7f8ff; font-size: 18px; }
.route-line { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 8px; }
.route-line > div { padding: 13px 8px; border: 1px solid rgba(130,139,178,.18); border-radius: 10px; color: #b8bfd6; background: rgba(255,255,255,.035); text-align: center; }
.route-line > div.active { color: #79e6da; border-color: rgba(60,210,196,.35); background: rgba(51,196,184,.1); }
.route-line b { display: block; font-size: 12px; }
.route-line small { display: block; margin-top: 5px; color: #6f7898; font-size: 8px; }
.route-line > i { color: #515a78; font-style: normal; }
.console-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 15px; }
.console-metrics div { padding: 14px; border-radius: 10px; background: #191d30; }
.console-metrics b { display: block; color: #fff; font-size: 20px; }
.console-metrics span { display: block; margin-top: 4px; color: #737d9b; font-size: 9px; }
.console-code { margin-top: 15px; padding: 15px; border-radius: 10px; color: #8fd8ce; background: #0d101c; font: 11px/1.8 Consolas, monospace; }

.trust-strip { position: relative; z-index: 2; margin-top: -32px; }
.trust-box { padding: 25px 26px; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: 0 16px 50px rgba(36,42,74,.07); }
.trust-box p { margin: 0 0 15px; color: #9aa1b0; font-size: 11px; text-align: center; }
.trust-items { display: grid; grid-template-columns: repeat(11, 1fr); gap: 8px; }
.trust-items span { display: grid; place-items: center; min-height: 44px; border-radius: 8px; color: #60687a; background: #f8f9fc; font-size: 11px; font-weight: 700; text-align: center; padding: 6px 4px; line-height: 1.25; }

.landing-section { padding: 108px 0; }
.landing-section.soft { background: var(--soft); }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-head span { color: var(--brand); font-size: 12px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.section-head h2 { margin: 12px 0 13px; font-size: clamp(32px, 4vw, 48px); line-height: 1.2; letter-spacing: -.035em; }
.section-head p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.8; }

.sku-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin: -18px 0 28px;
  color: #6b7386;
  font-size: 12px;
}
.sku-legend .dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 6px;
  border-radius: 50%;
  vertical-align: middle;
}
.sku-legend .dot.consume { background: #31a9f5; }
.sku-legend .dot.base { background: #6d55f7; }
.sku-legend .dot.trust { background: #1f9d6a; }
.sku-legend .dot.growth { background: #e08a2b; }

.sku-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.sku-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}
.sku-card header {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  margin-bottom: 14px;
}
.sku-card header b {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  color: #fff;
  font-size: 18px;
}
.sku-card.role-consume header b { background: #31a9f5; }
.sku-card.role-base header b { background: #6d55f7; }
.sku-card.role-trust header b { background: #1f9d6a; }
.sku-card.role-growth header b { background: #e08a2b; }
.sku-card h3 { margin: 0; font-size: 18px; }
.sku-card header p { margin: 5px 0 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
.sku-card ul {
  margin: 0;
  padding-left: 18px;
  color: #3f465a;
  font-size: 13px;
  line-height: 1.7;
}
.sku-meta {
  display: grid;
  gap: 8px;
  margin: 14px 0;
  padding: 12px;
  border-radius: 12px;
  background: #f5f6fb;
  color: #5d667c;
  font-size: 12px;
  line-height: 1.55;
}
.sku-meta em {
  display: block;
  margin-bottom: 2px;
  color: #8a93a8;
  font-style: normal;
  font-size: 10px;
  letter-spacing: .04em;
}
.sku-card > a {
  color: var(--brand);
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
}
.sku-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 28px;
}

.advantage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.advantage-card { min-height: 210px; padding: 28px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.advantage-icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; color: var(--brand); background: #f0edff; font-size: 18px; }
.advantage-card h3 { margin: 22px 0 10px; font-size: 18px; }
.advantage-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }

.proof-band { margin-top: 26px; padding: 29px 32px; border-radius: 17px; color: #fff; background: linear-gradient(120deg, #171a2b, #2a2754 58%, #214f61); }
.proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.proof-grid div { padding: 5px 25px; border-right: 1px solid rgba(255,255,255,.1); }
.proof-grid div:last-child { border-right: 0; }
.proof-grid b { display: block; font-size: 27px; }
.proof-grid span { display: block; margin-top: 6px; color: #aeb7cc; font-size: 11px; }

.scene-wrap { display: grid; grid-template-columns: 220px 1fr; gap: 26px; }
.scene-tabs { display: flex; flex-direction: column; gap: 8px; }
.scene-tab { border: 0; border-radius: 10px; padding: 15px 17px; color: #697086; background: transparent; text-align: left; cursor: pointer; }
.scene-tab.active { color: var(--brand); background: #eeebff; font-weight: 750; }
.scene-panel { min-height: 360px; display: grid; grid-template-columns: 1fr .9fr; align-items: center; gap: 35px; padding: 48px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.scene-panel h3 { margin: 0 0 15px; font-size: 30px; }
.scene-panel p { color: var(--muted); font-size: 14px; line-height: 1.8; }
.scene-panel ul { margin: 22px 0 0; padding: 0; list-style: none; }
.scene-panel li { margin: 10px 0; color: #444b60; font-size: 13px; }
.scene-panel li::before { content: "✓"; margin-right: 8px; color: #22b99a; font-weight: 800; }
.scene-art { min-height: 250px; display: grid; place-items: center; border-radius: 18px; background: linear-gradient(145deg, #f1f0ff, #e8fbfa); }
.scene-art-inner { width: 75%; padding: 22px; border: 1px solid rgba(99,81,243,.16); border-radius: 15px; background: rgba(255,255,255,.84); box-shadow: 0 20px 50px rgba(68,62,130,.1); }
.scene-art-inner span { display: block; margin: 9px 0; padding: 10px; border-radius: 8px; color: #657087; background: #f6f7fb; font-size: 11px; }

.landing-cta { padding: 86px 0; background: linear-gradient(115deg, #dbfbf7, #ece8ff 64%, #e4eaff); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.cta-inner h2 { margin: 0 0 10px; font-size: 34px; }
.cta-inner p { margin: 0; color: #626a7d; }
.cta-actions { display: flex; gap: 10px; }

.landing-footer { color: #7c8495; background: #fff; }
.footer-main { display: grid; grid-template-columns: 1.45fr repeat(3, .72fr) 1.2fr; gap: 48px; padding: 62px 0 43px; }
.footer-company { margin: 15px 0 9px; color: #50586b; font-size: 12px; font-weight: 650; }
.footer-desc { max-width: 270px; margin: 0; color: #9aa2b2; font-size: 11px; line-height: 1.75; }
.footer-col h3, .footer-contact h3 { margin: 2px 0 18px; color: #262b3d; font-size: 13px; }
.footer-col a { display: block; width: fit-content; margin: 0 0 12px; color: #81899a; font-size: 12px; text-decoration: none; }
.footer-col a:hover { color: var(--brand); }
.footer-qrs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.footer-qr { text-align: center; }
.footer-qr span { display: block; margin-bottom: 8px; font-size: 10px; }
.footer-qr img { width: 94px; height: 94px; padding: 4px; border: 1px solid #e3e5eb; border-radius: 7px; object-fit: contain; }
.footer-contact p { margin: 14px 0 0; color: #929aaa; font-size: 10px; line-height: 1.8; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding: 21px 0 28px; border-top: 1px solid #edf0f4; color: #a0a7b4; font-size: 10px; }
.footer-bottom div { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 15px; }
.footer-bottom a { color: #8992a3; text-decoration: none; }

@media (max-width: 1000px) {
  .landing-links { display: none; }
  .landing-menu-toggle { display: inline-flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 25px; }
  .landing-hero { min-height: auto; }
  .hero-console { max-width: 700px; transform: none; }
  .trust-items { grid-template-columns: repeat(4, 1fr); }
  .sku-grid { grid-template-columns: 1fr 1fr; }
  .footer-main { grid-template-columns: 1.4fr repeat(3, 1fr); }
  .footer-contact { grid-column: 1 / -1; }
  .footer-qrs { max-width: 220px; }
}

@media (max-width: 760px) {
  .landing-shell { width: min(100% - 28px, 1200px); }
  .landing-nav-inner { height: 60px; }
  .landing-actions .nav-action:first-child { display: none; }
  .hero-inner { padding: 62px 0 55px; }
  .hero-copy h1 { font-size: 44px; }
  .hero-copy > p { font-size: 15px; }
  .console-main { padding: 17px; }
  .route-line { grid-template-columns: 1fr; }
  .route-line > i { text-align: center; transform: rotate(90deg); }
  .trust-strip { margin-top: -15px; }
  .trust-items { grid-template-columns: repeat(2, 1fr); }
  .landing-section { padding: 76px 0; }
  .sku-grid, .advantage-grid, .scene-panel { grid-template-columns: 1fr; }
  .proof-grid { grid-template-columns: 1fr 1fr; gap: 20px 0; }
  .proof-grid div:nth-child(2) { border-right: 0; }
  .scene-wrap { grid-template-columns: 1fr; }
  .scene-tabs { flex-direction: row; overflow-x: auto; }
  .scene-tab { white-space: nowrap; }
  .scene-panel { padding: 28px; }
  .cta-inner { align-items: flex-start; flex-direction: column; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 32px 25px; }
  .footer-brand-block, .footer-contact { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
  .footer-bottom div { justify-content: flex-start; }
}