:root {
  color-scheme: light;
  --ink: #1a211b;
  --muted: #68716a;
  --line: #dce2dc;
  --paper: #f5f7f3;
  --white: #fff;
  --deep: #111411;
  --deep-soft: #191e19;
  --lime: #c5f66a;
  --lime-dark: #39561f;
  --coral: #e96752;
  --blue: #7994b9;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header {
  height: 74px;
  padding: 0 max(28px, calc((100vw - 1180px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: var(--deep);
  color: #f7f9f4;
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 17px; font-weight: 700; white-space: nowrap; }
.brand img { width: 36px; height: 36px; border-radius: 9px; object-fit: cover; }
.site-header nav { display: flex; align-items: center; gap: 30px; font-size: 13px; color: #c2c9c1; }
.site-header nav a { transition: color .18s ease; }
.site-header nav a:hover, .site-header nav a[aria-current="page"] { color: var(--lime); }
.site-header .nav-cta { padding: 10px 14px; border: 1px solid #596257; border-radius: 4px; color: #f7f9f4; }

.hero { position: relative; overflow: hidden; background: var(--deep); color: #f7f9f4; }
.hero::after {
  content: "";
  position: absolute;
  width: 640px;
  height: 640px;
  border: 1px solid rgba(197, 246, 106, .14);
  border-radius: 50%;
  right: -210px;
  top: -300px;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 56px));
  min-height: 615px;
  margin: 0 auto;
  padding: 68px 0 48px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  align-items: center;
  gap: 76px;
}
.hero-copy { max-width: 610px; }
.eyebrow { margin: 0 0 20px; font-size: 11px; font-weight: 700; letter-spacing: 0; line-height: 1.5; }
.hero .eyebrow { color: #a7b0a5; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin: 0 8px 1px 0; border-radius: 50%; background: var(--lime); }
.hero h1 { margin: 0; font-size: 58px; line-height: 1.12; font-weight: 750; }
.hero-lead { margin: 25px 0 14px; color: var(--lime); font-size: 30px; line-height: 1.46; font-weight: 600; }
.hero-description { max-width: 540px; margin: 0; color: #bdc5bc; font-size: 15px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 25px; margin-top: 31px; }
.button { display: inline-flex; min-height: 46px; padding: 0 18px; align-items: center; justify-content: center; gap: 14px; border-radius: 4px; font-size: 14px; font-weight: 700; }
.button-lime { background: var(--lime); color: #1a211b; }
.button-lime:hover { background: #d6ff90; }
.text-link { font-size: 13px; }
.text-link-light { color: #d3d9d1; }
.text-link:hover, .inline-link:hover, .footer-links a:hover { text-decoration: underline; text-underline-offset: 4px; }
.hero-note { margin: 26px 0 0; color: #8f998e; font-size: 12px; line-height: 1.7; }
.product-shot { width: 100%; margin: 0; justify-self: end; }
.phone-frame { width: 286px; max-height: 465px; margin: 0 auto; padding: 9px; overflow: hidden; border: 1px solid #667266; border-radius: 28px; background: #080a08; box-shadow: 0 26px 80px rgba(0,0,0,.42), 0 0 0 5px rgba(255,255,255,.035); }
.phone-frame img { width: 100%; height: 445px; border-radius: 19px; object-fit: cover; object-position: top; }
.product-shot figcaption { margin: 17px 0 0; text-align: center; color: #a8b1a6; font-size: 11px; }
.mobile-product-preview { display: none; }
.caption-mark { display: inline-block; width: 6px; height: 6px; margin: 0 7px 1px 0; border-radius: 50%; background: var(--lime); }
.hero-bottom { width: min(1180px, calc(100% - 56px)); margin: 0 auto; padding: 16px 0 21px; display: flex; gap: 12px; border-top: 1px solid #30372f; color: #929b91; font-size: 11px; }

.section { width: min(1120px, calc(100% - 56px)); margin: 0 auto; padding: 100px 0; }
.eyebrow-dark { color: #53614f; }
.section-heading { max-width: 640px; margin-bottom: 44px; }
.section h2, .how-copy h2, .privacy-section h2 { margin: 0; font-size: 36px; line-height: 1.35; font-weight: 700; }
.section-heading > p:last-child { max-width: 580px; margin: 14px 0 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.mobile-only { display: none; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feature-item { position: relative; min-height: 260px; padding: 27px 22px 30px 0; }
.feature-item + .feature-item { padding-left: 22px; border-left: 1px solid var(--line); }
.feature-index { color: #697469; font-size: 11px; }
.feature-icon { display: flex; width: 42px; height: 42px; margin: 23px 0 16px; align-items: center; justify-content: center; border-radius: 10px; background: #e8efdf; color: var(--lime-dark); font-size: 22px; font-weight: 700; }
.icon-sim { font-size: 11px; letter-spacing: 0; }
.icon-lock { color: #79503e; background: #f3e9e2; font-size: 29px; }
.icon-clock { color: #466483; background: #e6edf4; font-size: 23px; }
.feature-item h3 { margin: 0 0 10px; font-size: 17px; }
.feature-item p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.85; }
.feature-item .feature-caveat { margin-top: 9px; color: #9a5548; font-size: 11px; }

.how-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 95px; align-items: start; border-top: 1px solid var(--line); }
.how-copy > p:not(.eyebrow) { max-width: 440px; margin: 18px 0 23px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.inline-link { display: inline-flex; gap: 10px; align-items: center; color: #48612d; font-size: 13px; font-weight: 700; }
.steps { margin: 0; padding: 0; list-style: none; }
.steps li { display: grid; grid-template-columns: 36px 1fr; gap: 15px; padding: 0 0 25px; }
.steps li + li { padding-top: 21px; border-top: 1px solid var(--line); }
.steps li > span { display: flex; width: 30px; height: 30px; align-items: center; justify-content: center; border-radius: 50%; background: #e7efdc; color: var(--lime-dark); font-size: 12px; font-weight: 700; }
.steps strong { font-size: 15px; }
.steps p { margin: 7px 0 0; color: var(--muted); font-size: 12px; line-height: 1.75; }

.reality-band { padding: 48px max(28px, calc((100vw - 1120px) / 2)); display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; gap: 24px; align-items: start; background: #e9eee5; }
.reality-symbol { display: flex; width: 38px; height: 38px; align-items: center; justify-content: center; border-radius: 50%; background: #f5e3dd; color: var(--coral); font-weight: 800; }
.reality-band .eyebrow { margin-bottom: 8px; color: #59664e; }
.reality-band h2 { margin: 0; font-size: 19px; }
.reality-band p:not(.eyebrow) { max-width: 780px; margin: 8px 0 0; color: #59645a; font-size: 12px; line-height: 1.9; }
.reality-band > a { padding-top: 32px; color: #46612c; font-size: 12px; font-weight: 700; white-space: nowrap; }

.privacy-section { display: grid; grid-template-columns: 1fr 1.1fr; gap: 26px 90px; }
.privacy-section h2 { font-size: 34px; }
.privacy-copy p { margin: 0 0 19px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.privacy-stats { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.privacy-stats div { padding: 21px 18px; display: flex; flex-direction: column; gap: 6px; }
.privacy-stats div:first-child { padding-left: 0; }
.privacy-stats div + div { border-left: 1px solid var(--line); }
.privacy-stats strong { font-size: 18px; }
.privacy-stats span { color: var(--muted); font-size: 11px; }

.closing { min-height: 170px; padding: 30px max(28px, calc((100vw - 1120px) / 2)); display: flex; align-items: center; gap: 23px; background: var(--deep-soft); color: #f5f7f3; }
.closing > img { border-radius: 14px; }
.closing .eyebrow { margin: 0 0 5px; color: #a7b0a5; font-size: 9px; }
.closing h2 { margin: 0; font-size: 22px; }
.closing p:last-child { margin: 5px 0 0; color: #a9b1a8; font-size: 12px; }
.closing .button { margin-left: auto; color: #e9eee5; border: 1px solid #606a5c; }
.closing .button:hover { border-color: var(--lime); color: var(--lime); }
.site-footer { min-height: 100px; padding: 22px max(28px, calc((100vw - 1120px) / 2)); display: flex; align-items: center; gap: 22px; background: var(--deep); color: #9ca59a; }
.footer-brand { color: #f5f7f3; font-size: 13px; font-weight: 700; white-space: nowrap; }
.site-footer > p { margin: 0; font-size: 11px; }
.footer-links { margin-left: auto; display: flex; gap: 20px; font-size: 11px; }
.site-footer small { color: #778176; font-size: 10px; white-space: nowrap; }

.document-page { min-height: calc(100vh - 174px); }
.document-hero { padding: 70px max(28px, calc((100vw - 920px) / 2)) 48px; background: var(--deep); color: #f7f9f4; }
.document-hero .eyebrow { color: var(--lime); }
.document-hero h1 { margin: 0; font-size: 42px; }
.document-hero > p:last-child { margin: 12px 0 0; color: #bac2b8; font-size: 14px; }
.document-content { width: min(920px, calc(100% - 56px)); margin: 0 auto; padding: 52px 0 90px; }
.document-content section { padding: 25px 0; border-bottom: 1px solid var(--line); }
.document-content section:first-of-type { padding-top: 10px; }
.document-content h2 { margin: 0 0 17px; font-size: 22px; }
.document-content h3 { margin: 23px 0 8px; font-size: 15px; }
.document-content p, .document-content li { color: #535e54; font-size: 14px; line-height: 1.95; }
.document-content p { margin: 0 0 13px; }
.document-content p:last-child { margin-bottom: 0; }
.document-content a { color: #49662d; text-decoration: underline; text-underline-offset: 3px; }
.document-lead { margin: 0 0 25px !important; padding: 18px 20px; border-left: 3px solid var(--lime-dark); background: #edf2e7; color: #394339 !important; }
.info-list { margin: 0; border-top: 1px solid var(--line); }
.info-list > div { display: grid; grid-template-columns: 170px 1fr; gap: 18px; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.info-list dt { color: var(--muted); }
.info-list dd { margin: 0; font-weight: 600; }
.info-list code { font-size: 12px; }
.check-list, .number-list { margin: 0; padding-left: 22px; }
.check-list li, .number-list li { padding-left: 4px; margin: 8px 0; }
.notice { margin-top: 16px !important; padding: 13px 15px; border-left: 3px solid #88a36b; background: #edf2e7; color: #4d594a !important; font-size: 12px !important; }
.notice-warn { border-color: var(--coral); background: #f6ece8; color: #654b43 !important; }
.site-footer .footer-links a { color: #9ca59a; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: minmax(0, 1fr) 310px; gap: 35px; }
  .phone-frame { width: 260px; }
  .phone-frame img { height: 410px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-item { min-height: 225px; padding-right: 26px; }
  .feature-item + .feature-item { padding-left: 26px; }
  .feature-item:nth-child(3) { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .feature-item:nth-child(4) { border-top: 1px solid var(--line); }
  .how-section { gap: 48px; }
  .privacy-section { gap: 26px 45px; }
  .site-footer { flex-wrap: wrap; }
  .site-footer small { margin-left: auto; }
}

@media (max-width: 640px) {
  .site-header { height: auto; min-height: 68px; padding: 12px 20px; flex-wrap: wrap; gap: 8px; }
  .brand { font-size: 15px; }
  .brand img { width: 32px; height: 32px; }
  .site-header nav { width: 100%; padding: 5px 0 2px; gap: 22px; overflow-x: auto; font-size: 12px; scrollbar-width: none; }
  .site-header nav::-webkit-scrollbar { display: none; }
  .site-header .nav-cta { padding: 6px 10px; }
  .hero-inner { width: calc(100% - 40px); min-height: auto; padding: 54px 0 39px; grid-template-columns: 1fr; gap: 34px; }
  .hero::after { width: 430px; height: 430px; right: -270px; top: -205px; }
  .eyebrow { margin-bottom: 15px; font-size: 10px; }
  .hero h1 { font-size: 43px; }
  .hero-lead { margin-top: 18px; font-size: 25px; }
  .hero-description { font-size: 14px; }
  .hero-actions { flex-wrap: wrap; gap: 18px; }
  .product-shot { display: none; }
  .mobile-product-preview { display: block; width: 100%; margin: 0 0 29px; }
  .mobile-product-preview .phone-frame { width: 166px; max-height: 292px; padding: 7px; border-radius: 21px; }
  .mobile-product-preview .phone-frame img { height: 276px; border-radius: 14px; }
  .mobile-product-preview figcaption { margin-top: 12px; text-align: center; color: var(--muted); font-size: 10px; }
  .hero-bottom { width: calc(100% - 40px); font-size: 10px; }
  .section { width: calc(100% - 40px); padding: 69px 0; }
  .section h2, .how-copy h2 { font-size: 29px; }
  .mobile-only { display: block; }
  .section-heading { margin-bottom: 30px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-item, .feature-item + .feature-item { min-height: auto; padding: 22px 0 24px; border-left: 0; }
  .feature-item + .feature-item { border-top: 1px solid var(--line); }
  .feature-icon { margin: 16px 0 12px; }
  .how-section { grid-template-columns: 1fr; gap: 34px; }
  .reality-band { padding: 35px 20px; grid-template-columns: 38px 1fr; gap: 14px; }
  .reality-band > a { grid-column: 2; padding-top: 0; }
  .privacy-section { grid-template-columns: 1fr; gap: 20px; }
  .privacy-section h2 { font-size: 29px; }
  .privacy-stats { grid-template-columns: 1fr; }
  .privacy-stats div, .privacy-stats div:first-child { padding: 15px 0; }
  .privacy-stats div + div { border-left: 0; border-top: 1px solid var(--line); }
  .closing { min-height: 0; padding: 27px 20px; gap: 15px; flex-wrap: wrap; }
  .closing > img { width: 54px; height: 54px; }
  .closing h2 { font-size: 19px; }
  .closing .button { width: 100%; margin: 5px 0 0; }
  .site-footer { padding: 23px 20px; gap: 12px 16px; }
  .site-footer > p { width: calc(100% - 130px); }
  .footer-links { width: 100%; margin: 0; gap: 18px; }
  .site-footer small { margin: 0; }
  .document-hero { padding: 48px 20px 34px; }
  .document-hero h1 { font-size: 34px; }
  .document-content { width: calc(100% - 40px); padding: 31px 0 60px; }
  .document-content h2 { font-size: 20px; }
  .document-content p, .document-content li { font-size: 13px; }
  .info-list > div { grid-template-columns: 105px minmax(0, 1fr); gap: 12px; font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}