:root {
  color-scheme: light;
  --ink: #14213b;
  --muted: #60708b;
  --line: #dce5f1;
  --blue: #315dd5;
  --blue-dark: #2348b4;
  --paper: #f7f9fd;
  --white: #fff;
  --soft-blue: #eaf0ff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible { outline: 3px solid #80a4ff; outline-offset: 4px; border-radius: 5px; }
img { display: block; max-width: 100%; }
.container { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: absolute; z-index: 20; top: -80px; left: 16px; padding: 9px 14px; background: var(--ink); color: white; }
.skip-link:focus { top: 12px; }

.site-header { background: rgba(255,255,255,.88); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 78px; display: flex; align-items: center; gap: 34px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 740; font-size: 17px; letter-spacing: -.025em; white-space: nowrap; }
.brand img { width: 36px; height: 36px; border-radius: 10px; box-shadow: 0 5px 12px rgba(40,70,160,.15); }
.main-nav { display: flex; align-items: center; gap: 29px; margin-left: auto; }
.main-nav a, .footer-links a { color: #4a5871; font-size: 14px; font-weight: 600; transition: color .18s ease; }
.main-nav a:hover, .footer-links a:hover, .text-link:hover { color: var(--blue); }
.main-nav a[aria-current="page"] { color: var(--blue); }
.language-switch { display: inline-flex; align-items: center; padding: 4px; border: 1px solid var(--line); border-radius: 999px; background: white; white-space: nowrap; }
.language-switch a { padding: 5px 10px; border-radius: 999px; color: var(--muted); font-size: 12px; font-weight: 700; line-height: 1.2; }
.language-switch a[aria-current="true"] { background: var(--ink); color: white; }

.hero { position: relative; overflow: hidden; background: radial-gradient(circle at 76% 30%, #dce7ff 0, transparent 33%), linear-gradient(180deg, #f8fbff 0%, #eef3ff 100%); border-bottom: 1px solid var(--line); }
.hero::after { content: ""; position: absolute; width: 570px; height: 570px; right: -210px; top: -320px; border: 1px solid rgba(71,111,207,.12); border-radius: 50%; box-shadow: 0 0 0 100px rgba(71,111,207,.035), 0 0 0 200px rgba(71,111,207,.025); pointer-events: none; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr .95fr; align-items: center; gap: 56px; min-height: 614px; padding-block: 70px 75px; }
.eyebrow { margin: 0 0 17px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(42px, 5vw, 70px); line-height: 1.075; letter-spacing: -.065em; margin-bottom: 22px; max-width: 650px; }
.hero-copy { color: #52627d; font-size: 18px; line-height: 1.75; max-width: 555px; margin-bottom: 29px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 16px 23px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 11px 22px; border-radius: 12px; font-size: 14px; font-weight: 750; transition: background .18s ease, transform .18s ease, box-shadow .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--blue); box-shadow: 0 10px 22px rgba(49,93,213,.2); }
.button-primary:hover { background: var(--blue-dark); }
.text-link { color: var(--blue); font-size: 14px; font-weight: 750; }
.text-link::after { content: " →"; }
.hero-note { display: flex; align-items: center; gap: 9px; color: #60718d; font-size: 13px; margin-top: 34px; }
.hero-note svg { flex: none; color: var(--blue); }

.preview-wrap { display: flex; justify-content: center; position: relative; }
.preview-wrap::before { content: ""; position: absolute; inset: 7% 5% 4%; border-radius: 50%; background: #92aaf5; filter: blur(60px); opacity: .28; }
.device { position: relative; width: min(100%, 360px); padding: 10px; border: 2px solid #18294c; border-radius: 43px; background: #172949; box-shadow: 0 28px 58px rgba(29,51,109,.24), 0 5px 15px rgba(29,51,109,.12); transform: rotate(3deg); }
.device::before { content: ""; position: absolute; top: 17px; left: 50%; width: 88px; height: 22px; border-radius: 20px; background: #172949; transform: translateX(-50%); z-index: 3; }
.device-screen { overflow: hidden; min-height: 575px; border-radius: 34px; background: #fbfcff; }
.device-top { padding: 41px 20px 13px; display: flex; justify-content: space-between; align-items: center; font-size: 14px; font-weight: 750; }
.device-top span:last-child { color: var(--blue); font-size: 13px; }
.device-photo { height: 215px; background: url("landscape.svg") center / cover; }
.device-tabs { display: flex; justify-content: space-around; border-bottom: 1px solid #e8ecf4; padding: 15px 12px 12px; font-size: 11px; font-weight: 700; color: #8390a6; }
.device-tabs span:first-child { color: var(--blue); position: relative; }
.device-tabs span:first-child::after { content: ""; position: absolute; height: 2px; background: var(--blue); left: 0; right: 0; bottom: -13px; }
.device-card { margin: 17px 17px 0; padding: 16px; border: 1px solid #e8edf5; border-radius: 15px; background: white; box-shadow: 0 5px 12px rgba(42,68,121,.035); }
.device-card-title { font-size: 11px; font-weight: 800; color: #72819b; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 10px; }
.device-row { display: flex; justify-content: space-between; gap: 16px; padding: 6px 0; font-size: 12px; }
.device-row + .device-row { border-top: 1px solid #f0f2f7; }
.device-row span { color: #718098; }
.device-row strong { color: #253552; font-weight: 650; text-align: right; }
.device-bottom { margin: 18px 17px; padding: 12px; background: var(--blue); border-radius: 11px; text-align: center; color: white; font-size: 12px; font-weight: 750; }
.preview-caption { position: absolute; right: -12px; bottom: 1px; padding: 8px 13px; border: 1px solid #dfe6f6; border-radius: 999px; background: rgba(255,255,255,.95); color: #61718b; font-size: 11px; box-shadow: 0 9px 18px rgba(38,72,155,.08); }

.section { padding-block: 100px; }
.section-heading { max-width: 700px; margin-bottom: 38px; }
.section h2 { font-size: clamp(31px, 3.3vw, 44px); letter-spacing: -.045em; line-height: 1.17; margin-bottom: 15px; }
.section-intro { color: var(--muted); font-size: 16px; line-height: 1.75; margin-bottom: 0; }
.features { background: white; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { min-height: 218px; padding: 28px; border: 1px solid #e1e8f3; border-radius: 19px; background: #fbfcff; }
.feature-icon { display: inline-grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: #e9efff; color: var(--blue); margin-bottom: 21px; }
.feature-card h3 { font-size: 18px; letter-spacing: -.025em; margin-bottom: 8px; }
.feature-card p { color: #62718b; font-size: 14px; line-height: 1.7; margin-bottom: 0; }
.feature-icon svg { width: 21px; height: 21px; stroke-width: 1.8; }

.how { background: var(--paper); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 35px; counter-reset: step; }
.step { position: relative; padding-top: 25px; border-top: 1px solid #ccd8ee; }
.step::before { counter-increment: step; content: "0" counter(step); position: absolute; top: -19px; left: 0; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: white; font-size: 11px; font-weight: 800; box-shadow: 0 0 0 6px var(--paper); }
.step h3 { font-size: 19px; letter-spacing: -.025em; margin: 8px 0 9px; }
.step p { color: #62718b; font-size: 14px; line-height: 1.75; margin-bottom: 0; }
.note-panel { display: flex; align-items: flex-start; gap: 15px; margin-top: 42px; padding: 20px 24px; border: 1px solid #cddbf8; border-radius: 16px; background: #eef3ff; color: #41557e; }
.note-panel svg { flex: none; color: var(--blue); margin-top: 2px; }
.note-panel p { font-size: 14px; margin: 0; }
.format-section { background: white; padding-block: 79px; }
.format-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 35px; align-items: start; }
.format-grid h2 { font-size: 31px; letter-spacing: -.04em; margin-bottom: 14px; }
.format-grid p { color: var(--muted); font-size: 15px; margin-bottom: 0; }
.format-list { display: grid; gap: 11px; }
.format-item { padding: 15px 18px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcff; display: flex; justify-content: space-between; gap: 15px; align-items: baseline; }
.format-item strong { font-size: 14px; }
.format-item span { font-size: 12px; color: var(--muted); text-align: right; }
.fine-print { color: #71809a; font-size: 12px; line-height: 1.7; margin: 20px 0 0; }

.site-footer { background: #152441; color: #eff3fc; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 22px; padding-block: 35px; }
.footer-brand { display: flex; align-items: center; gap: 11px; font-size: 14px; font-weight: 750; }
.footer-brand img { width: 27px; height: 27px; border-radius: 8px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 21px; }
.footer-links a { color: #c7d2e7; font-size: 13px; }
.footer-links a:hover { color: white; }

.legal-header { padding-block: 66px 53px; background: linear-gradient(145deg, #f7faff, #eaf0ff); border-bottom: 1px solid var(--line); }
.legal-header h1 { font-size: clamp(39px, 4.4vw, 59px); margin-bottom: 12px; }
.legal-header p:last-child { max-width: 650px; color: #60708b; font-size: 16px; margin-bottom: 0; }
.legal-main { display: grid; grid-template-columns: 225px minmax(0, 1fr); gap: 80px; padding-block: 65px 100px; }
.legal-aside { align-self: start; position: sticky; top: 24px; }
.legal-aside h2 { font-size: 12px; text-transform: uppercase; letter-spacing: .12em; color: #8b99ad; margin-bottom: 16px; }
.legal-aside a { display: block; padding: 9px 0; color: #65748d; font-size: 13px; line-height: 1.35; }
.legal-aside a:hover { color: var(--blue); }
.legal-content { max-width: 720px; }
.legal-content section { scroll-margin-top: 28px; padding-bottom: 26px; border-bottom: 1px solid var(--line); margin-bottom: 30px; }
.legal-content section:last-child { border-bottom: 0; margin-bottom: 0; }
.legal-content h2 { font-size: 22px; line-height: 1.32; letter-spacing: -.025em; margin-bottom: 12px; }
.legal-content p, .legal-content li { color: #4e5f7b; font-size: 15px; line-height: 1.78; }
.legal-content p { margin-bottom: 12px; }
.legal-content ul { padding-left: 21px; margin: 0 0 13px; }
.legal-content li + li { margin-top: 7px; }
.legal-content a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.legal-date { display: inline-block; padding: 6px 11px; border-radius: 8px; background: white; border: 1px solid var(--line); color: #5e6e8a; font-size: 12px; font-weight: 650; margin-top: 12px; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr .8fr; gap: 30px; }
  .device { transform: rotate(2deg) scale(.9); }
  .main-nav { gap: 17px; }
  .legal-main { gap: 45px; }
}
@media (max-width: 700px) {
  .container { width: min(100% - 36px, 540px); }
  .header-inner { min-height: 70px; gap: 14px; flex-wrap: wrap; padding-block: 12px; }
  .brand { margin-right: auto; }
  .main-nav { width: 100%; order: 3; justify-content: space-between; gap: 12px; padding-top: 4px; }
  .main-nav a { font-size: 12px; }
  .hero-grid { display: block; padding-block: 58px 65px; }
  h1 { font-size: clamp(41px, 10vw, 57px); }
  .hero-copy { font-size: 16px; }
  .hero-note { margin-top: 26px; }
  .preview-wrap { margin: 48px auto 0; max-width: 390px; }
  .device { transform: rotate(2deg); }
  .preview-caption { right: 0; bottom: -11px; }
  .section { padding-block: 72px; }
  .feature-grid, .steps, .format-grid { grid-template-columns: 1fr; }
  .feature-grid { gap: 12px; }
  .feature-card { min-height: 0; padding: 23px; }
  .steps { gap: 30px; }
  .format-section { padding-block: 68px; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
  .legal-header { padding-block: 49px 42px; }
  .legal-main { display: block; padding-block: 45px 70px; }
  .legal-aside { position: static; margin-bottom: 32px; padding-bottom: 19px; border-bottom: 1px solid var(--line); }
  .legal-aside h2 { margin-bottom: 8px; }
  .legal-aside nav { display: flex; flex-wrap: wrap; gap: 0 16px; }
  .legal-aside a { padding: 6px 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .button, .main-nav a, .footer-links a { transition: none; } }