:root {
  --ink: #07171b;
  --ink-2: #10262b;
  --ink-3: #17343a;
  --green: #36d6ac;
  --green-2: #1ab78e;
  --mint: #edf5f2;
  --mint-2: #dcece7;
  --gold: #e9c460;
  --paper: #f8faf9;
  --white: #ffffff;
  --text: #233436;
  --muted: #5b6d6f;
  --line: #d7e3df;
  --shadow: 0 24px 70px rgba(5, 27, 30, .14);
  --radius: 24px;
  --container: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, "Microsoft YaHei", "PingFang SC", "Helvetica Neue", sans-serif;
  background: var(--paper);
  color: var(--text);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 14px 20px 0;
  background: linear-gradient(180deg, rgba(7,23,27,.96), rgba(7,23,27,.78), transparent);
}
.header-shell {
  width: min(1220px, 100%);
  min-height: 68px;
  margin: 0 auto;
  padding: 8px 10px 8px 16px;
  display: grid;
  grid-template-columns: minmax(180px, auto) 1fr auto;
  align-items: center;
  gap: 28px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  background: rgba(8, 26, 30, .9);
  box-shadow: 0 14px 40px rgba(0,0,0,.18);
  backdrop-filter: blur(14px);
}
.brand { display: inline-flex; align-items: center; min-width: max-content; text-decoration: none; flex-shrink: 0; }
.brand-mark { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.brand-mark img { width: auto; height: 38px; max-width: 180px; max-height: 42px; object-fit: contain; flex-shrink: 0; }
.main-nav { display: flex; justify-content: center; gap: 30px; }
.main-nav a { color: #dbe8e5; text-decoration: none; font-size: 14px; font-weight: 700; }
.main-nav a:hover { color: var(--green); }
.btn {
  min-height: 46px;
  padding: 12px 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--green); color: #062119; box-shadow: 0 10px 26px rgba(54,214,172,.2); }
.btn-primary:hover { background: #50e5bd; }
.btn-ghost { border-color: rgba(255,255,255,.28); color: var(--white); background: rgba(255,255,255,.05); }
.btn-dark { background: var(--ink); color: var(--white); }
.btn-lg { min-height: 52px; padding: 14px 26px; font-size: 16px; }
.hero {
  position: relative;
  overflow: hidden;
  margin-top: -96px;
  padding: 170px 20px 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(54,214,172,.18), transparent 28%),
    linear-gradient(135deg, #06171b 0%, #0b2428 47%, #102f32 100%);
  color: var(--white);
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 160px;
  background: linear-gradient(180deg, transparent, rgba(237,245,242,.08));
  pointer-events: none;
}
.hero-glow { position: absolute; border-radius: 50%; filter: blur(2px); opacity: .5; }
.hero-glow-a { width: 420px; height: 420px; right: -160px; top: 120px; background: radial-gradient(circle, rgba(233,196,96,.18), transparent 70%); }
.hero-glow-b { width: 360px; height: 360px; left: -180px; bottom: 40px; background: radial-gradient(circle, rgba(54,214,172,.2), transparent 70%); }
.hero-shell {
  position: relative;
  z-index: 2;
  width: min(1180px, 100%);
  margin: 0 auto;
  min-height: 610px;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, .98fr);
  gap: 64px;
  align-items: center;
  padding-bottom: 90px;
}
.eyebrow, .kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--green-2);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.eyebrow {
  padding: 8px 12px;
  border: 1px solid rgba(54,214,172,.28);
  border-radius: 999px;
  color: #aaf6df;
  background: rgba(54,214,172,.08);
}
.hero h1 {
  max-width: 720px;
  margin: 22px 0 22px;
  font-size: clamp(44px, 5vw, 70px);
  line-height: 1.05;
  letter-spacing: -.04em;
  color: #fff;
}
.hero-lead { max-width: 650px; margin: 0; color: #c8d8d8; font-size: 18px; line-height: 1.9; }
.hero-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-points { margin-top: 28px; display: flex; gap: 20px; flex-wrap: wrap; color: #b9cbca; font-size: 14px; }
.hero-points span { position: relative; padding-left: 16px; }
.hero-points span::before { content: ""; position: absolute; left: 0; top: 50%; width: 6px; height: 6px; border-radius: 50%; background: var(--gold); transform: translateY(-50%); }
.hero-visual { position: relative; min-width: 0; }
.visual-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 28px;
  background: #e9f1ef;
  box-shadow: 0 36px 80px rgba(0,0,0,.32);
  transform: rotate(1.2deg);
}
.visual-toolbar { height: 48px; padding: 0 16px; display: flex; align-items: center; gap: 7px; background: #0c1c20; color: #aec2c1; }
.visual-toolbar span { width: 9px; height: 9px; border-radius: 50%; background: #6a7d7c; }
.visual-toolbar strong { margin-left: 10px; font-size: 12px; letter-spacing: .08em; }
.visual-frame img { width: 100%; min-height: 380px; max-height: 470px; object-fit: contain; background: linear-gradient(145deg, #eff5f2, #d9e8e4); }
.floating-note {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 15px;
  border-radius: 14px;
  background: rgba(255,255,255,.96);
  color: var(--ink);
  box-shadow: 0 14px 34px rgba(0,0,0,.2);
  font-size: 13px;
}
.floating-note b { color: var(--green-2); }
.note-one { left: -34px; top: 72px; }
.note-two { right: -30px; bottom: 70px; }
.quick-device-bar {
  position: relative;
  z-index: 4;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto -74px;
  display: grid;
  grid-template-columns: 1.12fr repeat(3, 1fr);
  border: 1px solid #c8d9d4;
  border-radius: 22px;
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
  color: var(--text);
}
.quick-device-copy { padding: 24px 26px; background: var(--mint); display: flex; flex-direction: column; justify-content: center; }
.quick-device-copy strong { color: var(--ink); font-size: 18px; }
.quick-device-copy span { color: var(--muted); font-size: 13px; }
.quick-device-bar > a { padding: 22px 20px; display: grid; grid-template-columns: 42px 1fr; grid-template-rows: auto auto; gap: 2px 12px; align-items: center; text-decoration: none; border-left: 1px solid var(--line); transition: background .2s ease; }
.quick-device-bar > a:hover { background: #f4faf8; }
.device-icon { grid-row: 1 / 3; width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center; border-radius: 12px; background: var(--ink); color: var(--green); font-weight: 900; font-size: 12px; }
.quick-device-bar b { color: var(--ink); }
.quick-device-bar small { color: var(--muted); }
.section { padding: 92px 0; }
.section-light { background: var(--mint); }
.intro-section { padding-top: 156px; }
.intro-grid { display: grid; grid-template-columns: .86fr 1.14fr; gap: 90px; align-items: start; }
.section-heading h2, .showcase-copy h2, .pc-copy h2, .check-title h2, .faq-heading h2, .related-grid h2, .final-cta h2 {
  margin: 12px 0 18px;
  color: var(--ink);
  font-size: clamp(30px, 3.2vw, 44px);
  line-height: 1.15;
  letter-spacing: -.025em;
}
.section-heading p, .showcase-copy p, .check-title p, .faq-heading p { margin: 0; color: var(--muted); }
.device-ledger { border-top: 1px solid #b9d0c9; }
.device-ledger article { display: grid; grid-template-columns: 54px 1fr auto; gap: 20px; align-items: center; padding: 24px 0; border-bottom: 1px solid #b9d0c9; }
.ledger-no { color: var(--green-2); font-weight: 900; font-size: 13px; }
.device-ledger h3 { margin: 0 0 5px; color: var(--ink); font-size: 20px; }
.device-ledger p { margin: 0; color: var(--muted); font-size: 14px; }
.device-ledger a { color: var(--ink); font-weight: 800; font-size: 13px; text-underline-offset: 4px; }
.showcase-section { background: #fff; }
.showcase-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: 76px; align-items: center; }
.showcase-visual { position: relative; min-height: 500px; padding: 46px; border-radius: 34px 8px 34px 8px; background: linear-gradient(145deg, #d9e9e4, #f7fbf9); border: 1px solid #cbded8; overflow: hidden; }
.showcase-visual::before { content: ""; position: absolute; width: 230px; height: 230px; border: 1px solid rgba(18,77,67,.16); border-radius: 50%; right: -80px; top: -70px; box-shadow: 0 0 0 36px rgba(18,77,67,.04), 0 0 0 72px rgba(18,77,67,.025); }
.showcase-visual img { position: relative; z-index: 2; width: 100%; height: 410px; object-fit: contain; }
.image-label { position: absolute; z-index: 3; top: 20px; left: 22px; display: flex; gap: 10px; align-items: center; }
.image-label span { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .1em; }
.image-label b { color: var(--ink); }
.check-lines { list-style: none; padding: 0; margin: 28px 0; border-top: 1px solid var(--line); }
.check-lines li { display: flex; gap: 16px; align-items: center; padding: 15px 0; border-bottom: 1px solid var(--line); font-weight: 700; color: #2b4243; }
.check-lines span { color: var(--green-2); font-size: 12px; }
.text-link { color: var(--ink); font-weight: 900; text-decoration: none; border-bottom: 1px solid #9dbbb3; padding-bottom: 4px; }
.text-link span { color: var(--green-2); }
.section-dark { background: var(--ink); color: #fff; }
.pc-grid { display: grid; grid-template-columns: .88fr 1.12fr; gap: 70px; align-items: center; }
.pc-copy h2 { color: #fff; }
.pc-copy p { color: #bbcccd; }
.kicker-light { color: #86e6cb; }
.pc-flow { margin: 30px 0; display: flex; align-items: center; gap: 12px; }
.pc-flow div { min-width: 0; padding: 14px 16px; border: 1px solid rgba(255,255,255,.14); border-radius: 14px; background: rgba(255,255,255,.045); }
.pc-flow strong, .pc-flow span { display: block; }
.pc-flow strong { color: #fff; font-size: 14px; }
.pc-flow span { color: #9fb5b5; font-size: 12px; }
.pc-flow i { color: var(--green); font-style: normal; }
.pc-visual { margin: 0; overflow: hidden; border-radius: 24px; background: #f5f8f7; box-shadow: 0 30px 70px rgba(0,0,0,.28); }
.pc-window-top { height: 46px; display: flex; align-items: center; gap: 7px; padding: 0 16px; background: #1f3136; }
.pc-window-top span { width: 9px; height: 9px; border-radius: 50%; background: #718588; }
.pc-window-top em { margin-left: 8px; color: #b7c6c7; font-size: 12px; font-style: normal; }
.pc-visual img { width: 100%; height: 390px; object-fit: contain; background: #f3f8f6; }
.pc-visual figcaption { padding: 14px 18px 17px; color: #627373; font-size: 13px; background: #fff; }
.centered { max-width: 760px; margin: 0 auto 50px; text-align: center; }
.route-line { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.route-line::before { content: ""; position: absolute; left: 8%; right: 8%; top: 29px; height: 1px; background: #aec8c0; }
.route-line article { position: relative; z-index: 2; padding: 0 12px; text-align: center; }
.route-line article > span { width: 58px; height: 58px; margin: 0 auto 18px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid #93b8ae; border-radius: 50%; background: var(--paper); color: var(--green-2); font-weight: 900; }
.route-line h3 { margin: 0 0 8px; color: var(--ink); }
.route-line p { margin: 0; color: var(--muted); font-size: 14px; }
.check-section { background: linear-gradient(180deg, #eef5f2, #e5efeb); }
.check-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 84px; align-items: center; }
.check-title .btn { margin-top: 26px; }
.check-board { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; overflow: hidden; border-radius: 22px; border: 1px solid #c8dbd5; background: #c8dbd5; }
.check-board div { min-height: 160px; padding: 26px; display: flex; flex-direction: column; justify-content: space-between; background: #fff; }
.check-board b { color: var(--ink); font-size: 18px; }
.check-board span { color: var(--muted); font-size: 14px; }
.related-section { background: #fff; }
.related-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 70px; }
.related-links { border-top: 1px solid var(--line); }
.related-links a { display: grid; grid-template-columns: 180px 1fr auto; gap: 18px; padding: 20px 0; align-items: center; border-bottom: 1px solid var(--line); text-decoration: none; }
.related-links b { color: var(--ink); }
.related-links span { color: var(--muted); font-size: 14px; }
.related-links i { color: var(--green-2); font-style: normal; font-size: 22px; }
.faq-section { background: #f4f7f5; }
.faq-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; align-items: start; }
.faq-heading { position: sticky; top: 110px; }
.faq-list { border-top: 1px solid #cbd8d4; }
.faq-item { border-bottom: 1px solid #cbd8d4; }
.faq-item button { width: 100%; padding: 22px 0; display: flex; justify-content: space-between; gap: 20px; border: 0; background: transparent; color: var(--ink); text-align: left; font: inherit; font-weight: 800; cursor: pointer; }
.faq-item button i { color: var(--green-2); font-size: 22px; font-style: normal; }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .25s ease; }
.faq-answer p { overflow: hidden; margin: 0; color: var(--muted); }
.faq-item.is-open .faq-answer { grid-template-rows: 1fr; }
.faq-item.is-open .faq-answer p { padding: 0 0 22px; }
.final-cta { padding: 0 20px 24px; background: #f4f7f5; }
.final-shell { width: min(1180px, 100%); margin: 0 auto; padding: 54px 58px; display: grid; grid-template-columns: 1fr auto; gap: 50px; align-items: center; border-radius: 30px; background: linear-gradient(135deg, #0b2025, #123b39); color: #fff; }
.final-cta h2 { color: #fff; margin-bottom: 10px; }
.final-cta p { margin: 0; color: #bfd0cf; }
.site-footer { padding: 52px 20px 100px; background: #061417; color: #c3d1d0; }
.footer-shell { width: min(1180px, 100%); margin: 0 auto; display: grid; grid-template-columns: 1fr auto auto; gap: 54px; align-items: center; }
.footer-brand .brand-mark img { height: 36px; }
.footer-brand p { margin: 10px 0 0; color: #8ea2a1; font-size: 13px; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 7px 28px; }
.footer-links a, .footer-download { color: #c9d7d6; font-size: 13px; text-decoration: none; }
.footer-links a:hover, .footer-download:hover { color: var(--green); }
.footer-download { padding-bottom: 4px; border-bottom: 1px solid rgba(54,214,172,.34); color: #88e8ce; font-weight: 800; }
.mobile-download-bar { display: none; }
@media (max-width: 1050px) {
  .main-nav { gap: 18px; }
  .hero-shell { grid-template-columns: 1fr 440px; gap: 38px; }
  .quick-device-bar { grid-template-columns: 1fr 1fr; }
  .quick-device-bar > a:nth-of-type(2) { border-top: 1px solid var(--line); }
  .quick-device-bar > a:nth-of-type(3) { border-top: 1px solid var(--line); }
  .intro-grid, .showcase-grid, .pc-grid, .check-layout, .related-grid, .faq-layout { gap: 50px; }
}
@media (max-width: 860px) {
  .site-header { padding-inline: 12px; }
  .header-shell { grid-template-columns: auto 1fr; gap: 14px; min-height: 62px; padding-left: 12px; }
  .main-nav { display: none; }
  .header-cta { justify-self: end; min-height: 42px; padding: 10px 16px; }
  .brand-mark img { height: 32px; max-width: 150px; }
  .hero { margin-top: -90px; padding-top: 150px; }
  .hero-shell { grid-template-columns: 1fr; min-height: auto; padding-bottom: 56px; }
  .hero-copy { text-align: left; }
  .hero-visual { width: min(620px, 100%); margin: 0 auto; }
  .visual-frame img { min-height: 0; height: auto; max-height: 360px; }
  .note-one { left: 12px; }
  .note-two { right: 12px; }
  .quick-device-bar { margin-bottom: -46px; }
  .intro-section { padding-top: 116px; }
  .intro-grid, .showcase-grid, .pc-grid, .check-layout, .related-grid, .faq-layout { grid-template-columns: 1fr; }
  .showcase-visual { min-height: auto; }
  .showcase-visual img, .pc-visual img { height: auto; max-height: 330px; }
  .pc-copy { order: 1; }
  .pc-visual { order: 2; }
  .related-grid, .faq-layout { gap: 34px; }
  .faq-heading { position: static; }
  .final-shell { grid-template-columns: 1fr; }
  .footer-shell { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 620px) {
  body { font-size: 15px; padding-bottom: 64px; }
  .container { width: min(100% - 28px, var(--container)); }
  .site-header { padding-top: 10px; }
  .header-shell { border-radius: 15px; }
  .header-cta { font-size: 13px; padding-inline: 13px; }
  .hero { padding-inline: 14px; }
  .hero h1 { font-size: clamp(36px, 11vw, 50px); }
  .hero-lead { font-size: 16px; line-height: 1.8; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .hero-points { gap: 10px 16px; }
  .visual-frame { border-radius: 20px; transform: none; }
  .floating-note { display: none; }
  .quick-device-bar { width: calc(100% - 28px); grid-template-columns: 1fr; border-radius: 18px; }
  .quick-device-bar > a { border-left: 0; border-top: 1px solid var(--line); }
  .quick-device-copy { padding: 20px; }
  .section { padding: 60px 0; }
  .intro-section { padding-top: 104px; }
  .section-heading h2, .showcase-copy h2, .pc-copy h2, .check-title h2, .faq-heading h2, .related-grid h2, .final-cta h2 { font-size: 31px; }
  .device-ledger article { grid-template-columns: 42px 1fr; gap: 12px; }
  .device-ledger article > a { grid-column: 2; }
  .showcase-visual { padding: 42px 18px 18px; border-radius: 24px 8px 24px 8px; }
  .showcase-visual img { max-height: 280px; }
  .pc-flow { display: grid; grid-template-columns: 1fr; }
  .pc-flow i { transform: rotate(90deg); justify-self: center; }
  .route-line { grid-template-columns: 1fr; gap: 0; }
  .route-line::before { left: 28px; right: auto; top: 20px; bottom: 20px; width: 1px; height: auto; }
  .route-line article { display: grid; grid-template-columns: 58px 1fr; gap: 16px; padding: 0 0 26px; text-align: left; }
  .route-line article > span { grid-row: 1 / 3; margin: 0; }
  .route-line h3 { margin-top: 4px; }
  .check-board { grid-template-columns: 1fr; }
  .check-board div { min-height: 120px; }
  .related-links a { grid-template-columns: 1fr auto; }
  .related-links span { grid-column: 1; }
  .related-links i { grid-column: 2; grid-row: 1 / 3; }
  .final-cta { padding-inline: 14px; }
  .final-shell { padding: 38px 24px; border-radius: 22px; }
  .site-footer { padding: 42px 18px 36px; }
  .mobile-download-bar { position: fixed; z-index: 80; left: 0; right: 0; bottom: 0; height: 62px; padding: 8px 12px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-top: 1px solid rgba(255,255,255,.09); background: rgba(6,20,23,.96); color: #fff; backdrop-filter: blur(10px); }
  .mobile-download-bar span { font-size: 13px; font-weight: 800; }
  .mobile-download-bar a { min-height: 44px; padding: 10px 18px; display: inline-flex; align-items: center; border-radius: 10px; background: var(--green); color: #062119; font-weight: 900; text-decoration: none; }
}
@media (max-width: 390px) {
  .brand-mark img { height: 29px; max-width: 135px; }
  .header-cta { font-size: 12px; }
  .hero h1 { font-size: 36px; }
  .device-ledger p { font-size: 13px; }
}