:root {
  --paper: #f5faff;
  --white: #ffffff;
  --ink: #06152f;
  --muted: #58708f;
  --blue: #075dff;
  --blue-2: #3896ff;
  --ice: #dff4ff;
  --cyan: #46ddff;
  --line: rgba(16, 91, 183, .16);
  --glass: rgba(255, 255, 255, .72);
  --display: "Arial Narrow", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --body: "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  --shadow: 0 28px 80px rgba(33, 105, 186, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--paper); }
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 8%, rgba(79, 184, 255, .18), transparent 24rem),
    linear-gradient(180deg, #fff 0, var(--paper) 45%, #edf7ff 100%);
  font-family: var(--body);
  line-height: 1.72;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }
.shell { width: min(1220px, calc(100% - 44px)); margin-inline: auto; }
.skip { position: fixed; top: 8px; left: 8px; z-index: 999; padding: 9px 14px; color: #fff; background: var(--blue); transform: translateY(-150%); }
.skip:focus { transform: none; }

.top {
  position: fixed;
  inset: 0 0 auto;
  z-index: 90;
  transition: .2s ease;
}
.top.scrolled {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.82);
  box-shadow: 0 10px 36px rgba(15,78,145,.06);
  backdrop-filter: blur(20px);
}
.nav { display: flex; min-height: 78px; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 11px; font-size: 20px; font-weight: 900; letter-spacing: -.04em; }
.logo-signal {
  position: relative;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(7,93,255,.22);
  border-radius: 13px;
  background: rgba(255,255,255,.8);
  box-shadow: inset 0 0 22px rgba(56,150,255,.12);
}
.logo-signal::before, .logo-signal::after { position: absolute; content: ""; border: 2px solid var(--blue); border-left-color: transparent; border-bottom-color: transparent; border-radius: 50%; transform: rotate(45deg); }
.logo-signal::before { inset: 9px; }
.logo-signal::after { inset: 15px; box-shadow: 0 0 12px var(--cyan); }
.nav-list { display: flex; align-items: center; gap: 30px; color: #36516f; font-size: 14px; font-weight: 700; }
.nav-list a { padding: 9px 0; border-bottom: 2px solid transparent; }
.nav-list a:hover, .nav-list a[aria-current="page"] { color: var(--blue); border-color: var(--blue); }
.nav-side { display: flex; align-items: center; gap: 10px; }
.menu { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); background: #fff; font-size: 20px; }
.button {
  display: inline-flex;
  min-width: 144px;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  font: 800 14px/1.2 var(--body);
  writing-mode: horizontal-tb;
  white-space: nowrap;
  word-break: keep-all;
  transition: .18s ease;
}
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(7,93,255,.18); }
.button-blue { color: #fff; background: var(--blue); }
.button-white { border-color: rgba(7,93,255,.2); color: var(--blue); background: rgba(255,255,255,.84); }
.button-small { min-width: 122px; min-height: 42px; }

.hero {
  position: relative;
  min-height: 830px;
  padding: 132px 0 80px;
  overflow: hidden;
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(245,250,255,.98) 0%, rgba(245,250,255,.84) 40%, rgba(245,250,255,.04) 73%);
  z-index: 1;
}
.hero-picture { position: absolute; inset: 0; }
.hero-picture img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-content { position: relative; z-index: 2; display: grid; min-height: 610px; align-items: center; grid-template-columns: minmax(0, 610px) 1fr; }
.kicker { display: inline-flex; align-items: center; gap: 10px; margin: 0 0 18px; color: var(--blue); font: 800 12px/1.3 "Consolas", monospace; letter-spacing: .16em; text-transform: uppercase; }
.kicker::before { width: 8px; height: 8px; border-radius: 2px; content: ""; background: var(--cyan); box-shadow: 0 0 0 7px rgba(70,221,255,.17); }
.hero h1 { margin: 0; font: 900 clamp(55px, 7.3vw, 102px)/.92 var(--display); letter-spacing: -.075em; }
.hero h1 em { display: block; color: var(--blue); font-style: normal; }
.hero-lead { max-width: 570px; margin: 30px 0 0; color: var(--muted); font-size: 18px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.platform-row { display: flex; flex-wrap: wrap; gap: 9px; margin: 27px 0 0; padding: 0; list-style: none; }
.platform-row li { padding: 6px 10px; border: 1px solid rgba(7,93,255,.13); border-radius: 7px; color: #45698d; background: rgba(255,255,255,.65); font: 700 11px/1.3 "Consolas", monospace; backdrop-filter: blur(8px); }
.beam-readout { position: absolute; right: 22px; bottom: 20px; z-index: 3; padding: 10px 14px; border: 1px solid rgba(7,93,255,.2); border-radius: 10px; color: var(--blue); background: rgba(255,255,255,.8); font: 700 11px "Consolas", monospace; backdrop-filter: blur(12px); }

.proof { position: relative; z-index: 4; display: grid; margin-top: -54px; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.84); box-shadow: var(--shadow); backdrop-filter: blur(22px); grid-template-columns: repeat(5, 1fr); }
.proof-item { padding: 24px 22px; border-right: 1px solid var(--line); }
.proof-item:last-child { border: 0; }
.proof-item strong { display: block; color: var(--blue); font: 900 25px/1.2 var(--display); }
.proof-item span { color: var(--muted); font-size: 12px; }

.section { padding: 128px 0; }
.head { display: grid; align-items: end; margin-bottom: 54px; grid-template-columns: 1fr minmax(280px, 430px); gap: 50px; }
.head h2, .page-head h1 { margin: 0; font: 900 clamp(38px, 5vw, 70px)/1.02 var(--display); letter-spacing: -.06em; }
.head p, .page-head p { margin: 0; color: var(--muted); font-size: 16px; }

.feature-flow { display: grid; border-top: 1px solid var(--line); }
.flow-row { display: grid; min-height: 240px; align-items: center; border-bottom: 1px solid var(--line); grid-template-columns: 100px 1fr minmax(300px, 470px); gap: 30px; }
.flow-icon { display: grid; width: 60px; height: 60px; place-items: center; border: 1px solid rgba(7,93,255,.2); border-radius: 50%; color: var(--blue); background: #fff; font: 900 14px "Consolas", monospace; box-shadow: 0 0 0 9px rgba(56,150,255,.05); }
.flow-row h3 { margin: 0; font-size: clamp(26px, 3.2vw, 42px); letter-spacing: -.04em; }
.flow-row p { margin: 0; color: var(--muted); }
.flow-row:hover .flow-icon { color: #fff; background: var(--blue); box-shadow: 0 0 34px rgba(7,93,255,.28); }

.device-band { position: relative; overflow: hidden; padding: 110px 0; background: #e7f5ff; }
.device-grid { display: grid; align-items: center; grid-template-columns: 1.2fr .8fr; gap: 70px; }
.device-image { align-self: center; overflow: hidden; border: 8px solid rgba(255,255,255,.7); border-radius: 26px; background: #fff; box-shadow: var(--shadow); }
.device-image img { display: block; width: 100%; height: auto; margin: 0; padding: 0; object-fit: contain; object-position: center; }
.device-copy h2 { margin: 0 0 18px; font: 900 clamp(38px,5vw,66px)/1.03 var(--display); letter-spacing: -.06em; }
.device-copy > p { color: var(--muted); }
.devices { display: grid; margin-top: 28px; grid-template-columns: repeat(3,1fr); gap: 8px; }
.devices span { padding: 11px 8px; border: 1px solid rgba(7,93,255,.12); border-radius: 8px; color: #315c89; background: rgba(255,255,255,.72); text-align: center; font-size: 12px; font-weight: 700; }

.scenarios { display: grid; grid-template-columns: repeat(12,1fr); gap: 16px; }
.scenario { position: relative; min-height: 340px; padding: 30px; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fff; box-shadow: 0 18px 50px rgba(36,103,175,.08); }
.scenario:nth-child(1) { grid-column: span 5; }
.scenario:nth-child(2) { grid-column: span 3; background: var(--blue); color: #fff; }
.scenario:nth-child(3) { grid-column: span 4; background: #dff5ff; }
.scenario-code { color: var(--blue); font: 800 11px "Consolas", monospace; letter-spacing: .13em; }
.scenario:nth-child(2) .scenario-code, .scenario:nth-child(2) p { color: rgba(255,255,255,.75); }
.scenario h3 { margin: 125px 0 11px; font-size: 28px; }
.scenario p { margin: 0; color: var(--muted); }

.plan-list { display: grid; gap: 12px; }
.plan {
  display: grid;
  min-height: 150px;
  align-items: center;
  padding: 26px 30px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  grid-template-columns: 170px 1fr 240px 170px;
  gap: 26px;
}
.plan.recommended { color: #fff; background: linear-gradient(110deg, #075dff, #2a86ff); box-shadow: 0 24px 64px rgba(7,93,255,.22); }
.plan h3 { margin: 0; font-size: 28px; }
.plan p { margin: 0; color: var(--muted); }
.plan.recommended p, .plan.recommended .plan-note { color: rgba(255,255,255,.76); }
.plan-price { font-size: 18px; font-weight: 900; }
.plan-note { color: var(--muted); font-size: 12px; }

.voices { display: grid; grid-template-columns: .8fr 1.2fr; gap: 16px; }
.voice-intro { padding: 42px; border-radius: 20px; color: #fff; background: var(--ink); }
.voice-intro h2 { margin: 0; font: 900 46px/1.05 var(--display); letter-spacing: -.05em; }
.voice-intro p { color: #a9bbcf; }
.voice-stack { display: grid; gap: 12px; }
.voice { display: grid; padding: 24px; border: 1px solid var(--line); border-radius: 16px; background: #fff; grid-template-columns: 86px 1fr; gap: 20px; }
.voice strong { color: var(--blue); }
.voice blockquote { margin: 0; color: #324e6c; }

.reading { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.story { display: flex; min-height: 260px; flex-direction: column; justify-content: flex-end; padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.story:first-child { min-height: 540px; grid-row: span 2; background: linear-gradient(180deg, transparent 34%, rgba(0,53,140,.92)), url("1.webp") center/cover; color: #fff; }
.story small { color: var(--blue); font: 800 11px "Consolas",monospace; }
.story:first-child small { color: #a9efff; }
.story h3 { margin: 12px 0 8px; font-size: 27px; line-height: 1.25; }
.story p { margin: 0; color: var(--muted); }
.story:first-child p { color: rgba(255,255,255,.76); }

.accordion { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 16px; }
.accordion details { align-self: start; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.82); }
.accordion summary { position: relative; padding: 20px 56px 20px 20px; font-weight: 800; cursor: pointer; list-style: none; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { position: absolute; top: 16px; right: 16px; display: grid; width: 32px; height: 32px; place-items: center; border-radius: 9px; color: var(--blue); background: var(--ice); content: "+"; }
.accordion details[open] summary::after { content: "−"; }
.accordion p { margin: 0; padding: 0 20px 22px; color: var(--muted); }

.closing { padding: 44px 0 120px; }
.closing-box { position: relative; overflow: hidden; padding: 80px; border-radius: 26px; color: #fff; background: linear-gradient(120deg, #06152f, #075dff); }
.closing-box::after { position: absolute; top: -70px; right: -40px; width: 390px; height: 390px; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; content: ""; box-shadow: 0 0 0 44px rgba(255,255,255,.04), 0 0 0 88px rgba(255,255,255,.025); }
.closing h2 { position: relative; z-index: 1; max-width: 760px; margin: 0 0 18px; font: 900 clamp(38px,5vw,68px)/1.03 var(--display); letter-spacing: -.055em; }
.closing p { position: relative; z-index: 1; max-width: 650px; color: rgba(255,255,255,.75); }
.closing .button { position: relative; z-index: 1; }

.page-hero { padding: 160px 0 84px; background: linear-gradient(180deg,#eaf6ff,#f7fbff); }
.page-head { max-width: 850px; }
.downloads { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.download {
  display: flex;
  min-height: 330px;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 18px 46px rgba(24,91,161,.07);
}
.os { display: grid; width: 54px; height: 54px; margin-bottom: 40px; place-items: center; border-radius: 14px; color: var(--blue); background: var(--ice); font: 900 13px "Consolas",monospace; }
.download h2 { margin: 0 0 9px; font-size: 26px; }
.download p { margin: 0 0 18px; color: var(--muted); }
.meta { color: #7890aa; font: 700 11px "Consolas",monospace; }
.download .button { width: 100%; margin-top: auto; }

.guide-layout { display: grid; align-items: start; grid-template-columns: 260px 1fr; gap: 60px; }
.guide-nav { position: sticky; top: 105px; display: grid; padding: 14px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.guide-nav a { padding: 9px 12px; border-radius: 8px; color: var(--muted); font-size: 13px; }
.guide-nav a:hover { color: var(--blue); background: var(--ice); }
.guide article { margin-bottom: 76px; scroll-margin-top: 110px; }
.guide h2 { margin: 0 0 16px; font-size: 34px; letter-spacing: -.035em; }
.guide h3 { color: var(--blue); }
.guide p, .guide li { color: var(--muted); }
.steps { display: grid; gap: 9px; padding: 0; counter-reset: step; list-style: none; }
.steps li { position: relative; padding: 17px 18px 17px 58px; border: 1px solid var(--line); border-radius: 12px; background: #fff; counter-increment: step; }
.steps li::before { position: absolute; top: 15px; left: 15px; display: grid; width: 29px; height: 29px; place-items: center; border-radius: 9px; color: #fff; background: var(--blue); content: counter(step); font: 900 12px "Consolas",monospace; }
.tip { padding: 17px 20px; border-left: 3px solid var(--blue); background: var(--ice); }

.footer { padding: 62px 0 26px; color: #d7e4f1; background: var(--ink); }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(4,.75fr); gap: 34px; }
.footer .logo { color: #fff; }
.footer-about p, .footer a { color: #91a7bf; font-size: 13px; }
.footer h3 { margin: 0 0 14px; color: #fff; font-size: 14px; }
.footer a { display: block; margin: 7px 0; }
.footer a:hover { color: var(--cyan); }
.legal { margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); color: #6f87a1; font-size: 12px; }
.rise { opacity: 0; transform: translateY(22px); transition: .55s ease; }
.rise.visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .nav-list { position: fixed; top: 76px; right: 20px; display: none; width: min(300px, calc(100% - 40px)); align-items: stretch; padding: 17px; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.96); box-shadow: var(--shadow); flex-direction: column; gap: 2px; }
  .nav-list.open { display: flex; }
  .menu { display: block; }
  .nav-side > .button { display: none; }
  .hero::before { background: linear-gradient(90deg,rgba(245,250,255,.98),rgba(245,250,255,.76)); }
  .hero-content { grid-template-columns: 1fr; }
  .proof { grid-template-columns: repeat(3,1fr); }
  .head, .device-grid, .guide-layout { grid-template-columns: 1fr; }
  .flow-row { grid-template-columns: 80px 1fr; padding: 24px 0; }
  .flow-row p { grid-column: 2; }
  .scenarios { grid-template-columns: 1fr; }
  .scenario:nth-child(n) { grid-column: auto; }
  .plan { grid-template-columns: 140px 1fr 160px; }
  .plan .button { grid-column: 2/4; justify-self: start; }
  .guide-nav { position: static; }
  .footer-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 700px) {
  .shell { width: min(100% - 28px, 1220px); }
  .hero { min-height: 760px; }
  .hero h1 { font-size: clamp(54px,17vw,80px); }
  .proof { margin-top: 18px; grid-template-columns: 1fr 1fr; }
  .proof-item:nth-child(even) { border-right: 0; }
  .section { padding: 88px 0; }
  .head { gap: 20px; }
  .flow-row { grid-template-columns: 62px 1fr; gap: 12px; }
  .flow-icon { width: 46px; height: 46px; }
  .devices { grid-template-columns: 1fr 1fr; }
  .plan { grid-template-columns: 1fr; gap: 10px; }
  .plan .button { grid-column: auto; width: 100%; }
  .voices, .reading, .accordion, .downloads { grid-template-columns: 1fr; }
  .voice { grid-template-columns: 1fr; }
  .story:first-child { min-height: 430px; grid-row: auto; }
  .closing-box { padding: 54px 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-about { grid-column: 1/-1; }
}

@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .rise { opacity: 1; transform: none; }
}

/* Final hero media rules */
.hero-content { align-items: center; }
.hero-picture { align-self: center; height: auto; margin: 0; padding: 0; transform: none; clip-path: none; }
.hero-picture img { display: block; width: 100%; height: 100%; min-height: 0; max-height: none; margin: 0; padding: 0; object-fit: cover; object-position: center; transform: none; clip-path: none; }