:root {
  color-scheme: light;
  --navy-950: #04152d;
  --navy-900: #07254d;
  --navy-800: #0a3c78;
  --blue-600: #1268c8;
  --blue-100: #dfeefa;
  --blue-50: #f2f7fd;
  --gold-500: #c59a4a;
  --gold-300: #e1c586;
  --gold-100: #f8eedb;
  --white: #fff;
  --ink: #12243e;
  --muted: #687990;
  --line: #dae5ef;
  --shadow: 0 28px 76px rgba(7, 46, 94, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 94px; }
body { margin: 0; color: var(--ink); background: var(--blue-50); }
a { color: inherit; text-decoration: none; }

.skip-link { position: fixed; z-index: 100; top: 12px; left: 12px; padding: 10px 16px; color: var(--white); background: var(--navy-950); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; z-index: 40; top: 0; display: flex; align-items: center; justify-content: space-between; height: 82px; padding: 0 clamp(20px, 5vw, 76px); color: var(--white); background: rgba(4, 21, 45, 0.95); border-bottom: 1px solid rgba(225, 197, 134, 0.26); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { display: grid; width: 40px; height: 40px; place-items: center; color: var(--navy-950); background: linear-gradient(145deg, #f3dfae, var(--gold-500)); border-radius: 3px 15px 3px 3px; font-family: Georgia, serif; font-size: 18px; font-weight: 900; }
.brand > span:last-child { display: grid; gap: 2px; }
.brand strong { font-size: 14px; letter-spacing: 0.12em; }
.brand small { color: #9fb4cc; font-size: 8px; letter-spacing: 0.16em; }
.site-header nav { display: flex; align-items: center; gap: 28px; }
.site-header nav a { color: #c6d5e5; font-size: 11px; font-weight: 800; }
.site-header nav a:hover { color: var(--gold-300); }
.contact-link { padding: 10px 15px; color: var(--navy-950) !important; background: var(--gold-300); }

.hero { display: grid; min-height: calc(100vh - 82px); grid-template-columns: minmax(0, 0.92fr) minmax(440px, 1.08fr); color: var(--white); background: var(--navy-950); }
.hero-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(70px, 8vw, 120px) clamp(28px, 7vw, 104px); background: radial-gradient(circle at 90% 18%, rgba(18, 104, 200, 0.32), transparent 34%), linear-gradient(130deg, var(--navy-950), var(--navy-900)); }
.eyebrow { display: flex; align-items: center; gap: 11px; margin: 0 0 22px; color: var(--gold-300); font-size: 10px; font-weight: 900; letter-spacing: 0.22em; }
.eyebrow span { width: 34px; height: 1px; background: currentColor; }
.eyebrow.dark { color: var(--gold-500); }
.status { display: inline-flex; align-self: flex-start; align-items: center; gap: 8px; margin-bottom: 26px; padding: 8px 11px; color: #886420; background: var(--gold-100); border: 1px solid #ead2a0; border-radius: 999px; font-size: 10px; font-weight: 900; }
.status i { width: 7px; height: 7px; background: var(--gold-500); border-radius: 50%; }
.hero h1 { margin: 0; font-family: Georgia, "Noto Serif SC", "Songti SC", serif; font-size: clamp(64px, 8vw, 106px); font-weight: 500; letter-spacing: -0.055em; line-height: 1.02; }
.hero h1 em { color: var(--gold-300); font-style: normal; }
.hero-description { max-width: 570px; margin: 28px 0 0; color: #afc1d5; font-size: 14px; line-height: 1.95; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.primary-button, .secondary-button { display: inline-flex; min-height: 52px; align-items: center; justify-content: space-between; gap: 28px; padding: 0 20px; font-size: 12px; font-weight: 900; transition: transform 180ms ease; }
.primary-button:hover, .secondary-button:hover { transform: translateY(-2px); }
.primary-button { color: var(--navy-950); background: linear-gradient(145deg, #f2dfad, var(--gold-500)); }
.secondary-button { border: 1px solid rgba(255,255,255,.32); }
.hero-boundary { max-width: 560px; margin: 26px 0 0; padding-top: 18px; color: #8da5bf; border-top: 1px solid rgba(255,255,255,.12); font-size: 9px; line-height: 1.7; }

.sim-visual { position: relative; display: grid; place-items: center; min-height: 680px; overflow: hidden; background: radial-gradient(circle at 65% 42%, rgba(18,104,200,.72), transparent 29%), linear-gradient(140deg, #082b59, #061a36); }
.sim-visual::before { position: absolute; width: 78%; aspect-ratio: 1; border: 1px solid rgba(225,197,134,.22); border-radius: 50%; content: ""; }
.signal-lines { position: absolute; inset: 0; opacity: .16; }
.signal-lines i { position: absolute; left: 50%; top: 50%; width: 30%; aspect-ratio: 1; border: 1px solid var(--gold-300); border-radius: 50%; transform: translate(-50%,-50%); }
.signal-lines i:nth-child(2) { width: 55%; }
.signal-lines i:nth-child(3) { width: 82%; }
.sim-card { position: relative; width: min(390px, 70%); aspect-ratio: 1.55; padding: 34px; overflow: hidden; color: var(--navy-950); background: linear-gradient(145deg, #fff, #e9f1fa); border-radius: 22px 22px 70px 22px; box-shadow: 0 45px 100px rgba(0,0,0,.35); transform: rotate(-7deg); }
.sim-card::after { position: absolute; inset: 7px; border: 1px solid var(--gold-500); border-radius: 16px 16px 62px 16px; content: ""; }
.operator-brand { position: relative; z-index: 2; width: min(205px, 63%); padding: 7px 10px; background: rgba(255,255,255,.84); border-radius: 8px; }
.operator-brand img { display: block; width: 100%; height: auto; }
.sim-label { position: relative; z-index: 2; display: block; margin-top: 16px; color: var(--navy-900); font-family: Georgia, "Noto Serif SC", serif; font-size: 22px; font-weight: 700; letter-spacing: .06em; }
.sim-chip { position: absolute; z-index: 2; bottom: 34px; left: 34px; display: grid; width: 82px; height: 62px; grid-template-columns: repeat(3,1fr); grid-template-rows: repeat(2,1fr); gap: 2px; padding: 5px; background: #b88935; border-radius: 9px; }
.sim-chip i { border: 1px solid rgba(100,66,10,.62); border-radius: 2px; background: linear-gradient(145deg,#f3d187,#c69943); }
.sim-copy { position: absolute; z-index: 2; right: 34px; bottom: 34px; display: grid; justify-items: end; }
.sim-copy small { color: var(--muted); font-size: 7px; letter-spacing: .17em; }
.sim-copy strong { margin-top: 5px; color: var(--navy-900); font-size: 12px; }
.sim-corner { position: absolute; z-index: 2; top: 28px; right: 33px; color: var(--gold-500); font-family: Georgia, serif; font-size: 28px; }
.visual-note { position: absolute; right: 24px; bottom: 22px; padding: 8px 11px; color: #c7d7e7; background: rgba(4,21,45,.7); font-size: 9px; }

.section { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.fee-section, .purchase-section { padding: 108px 0; }
.section-heading { display: grid; grid-template-columns: minmax(0,1fr) minmax(260px,.46fr); gap: 64px; align-items: end; }
.section-heading h2, .purchase-address h2, .compliance-note h2 { margin: 0; color: var(--navy-900); font-family: Georgia, "Noto Serif SC", "Songti SC", serif; font-size: clamp(42px,5vw,64px); font-weight: 500; letter-spacing: -.045em; }
.section-heading > p { margin: 0 0 6px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.fee-grid { display: grid; grid-template-columns: repeat(4,1fr); margin-top: 50px; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); }
.fee-grid article { min-height: 250px; padding: 28px; border-right: 1px solid var(--line); }
.fee-grid article:last-child { border-right: 0; }
.fee-grid article > span { color: var(--gold-500); font-family: Georgia, serif; font-size: 28px; }
.fee-grid small { display: block; margin-top: 34px; color: var(--muted); font-size: 9px; letter-spacing: .13em; }
.fee-grid strong { display: block; margin-top: 8px; color: var(--blue-600); font-size: 23px; }
.fee-grid p { margin: 24px 0 0; color: var(--muted); font-size: 10px; line-height: 1.7; }

.tariff-section { padding: 106px 0; color: var(--white); background: var(--navy-950); }
.tariff-inner { width: min(1180px, calc(100% - 48px)); }
.section-heading.light h2 { color: var(--white); }
.section-heading.light > p { color: #9fb4cc; }
.tariff-table { margin-top: 50px; border: 1px solid rgba(255,255,255,.13); }
.tariff-row { display: grid; grid-template-columns: .55fr .7fr 1fr; }
.tariff-row > * { padding: 19px 22px; border-right: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); }
.tariff-row > *:last-child { border-right: 0; }
.tariff-row:last-child > * { border-bottom: 0; }
.tariff-head { color: var(--gold-300); background: rgba(255,255,255,.06); font-size: 9px; font-weight: 900; letter-spacing: .13em; }
.tariff-row strong { color: var(--white); font-size: 12px; }
.tariff-row > span { color: var(--gold-300); font-size: 11px; }
.tariff-row small { color: #9fb4cc; font-size: 10px; }

.purchase-steps { display: grid; grid-template-columns: repeat(4,1fr); margin: 50px 0 0; padding: 0; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); list-style: none; }
.purchase-steps li { min-height: 250px; padding: 28px; border-right: 1px solid var(--line); }
.purchase-steps li:last-child { border-right: 0; }
.purchase-steps li > span { color: var(--gold-500); font-family: Georgia, serif; font-size: 28px; }
.purchase-steps h3 { margin: 44px 0 0; color: var(--navy-900); font-size: 15px; }
.purchase-steps p { margin: 12px 0 0; color: var(--muted); font-size: 10px; line-height: 1.8; }
.purchase-address { display: grid; grid-template-columns: 1.15fr .85fr; margin-top: 28px; background: var(--white); border: 1px solid var(--line); }
.address-copy { padding: clamp(32px,5vw,58px); }
.address-copy dl { margin: 34px 0 0; }
.address-copy dl div { display: grid; grid-template-columns: 120px 1fr; gap: 22px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.address-copy dt { color: var(--muted); font-size: 10px; }
.address-copy dd { margin: 0; color: var(--navy-900); font-size: 12px; font-weight: 800; }
.address-copy dd a { color: var(--blue-600); }
.address-copy dd strong { color: #966b23; }
.address-panel { display: flex; flex-direction: column; justify-content: flex-end; padding: clamp(32px,5vw,58px); color: var(--white); background: radial-gradient(circle at 75% 20%, rgba(18,104,200,.55), transparent 30%), linear-gradient(135deg,var(--navy-950),var(--navy-800)); }
.address-panel span { color: var(--gold-300); font-size: 9px; font-weight: 900; letter-spacing: .18em; }
.address-panel strong { margin-top: 20px; font-family: Georgia, "Noto Serif SC", serif; font-size: 29px; font-weight: 500; }
.address-panel p { margin: 18px 0 0; color: #aec1d5; font-size: 11px; line-height: 1.8; }

.compliance-note { display: grid; grid-template-columns: auto 1fr auto; gap: 30px; align-items: center; margin-bottom: 100px; padding: clamp(36px,5vw,56px); color: var(--white); background: linear-gradient(120deg,var(--navy-900),var(--blue-600)); }
.note-icon { display: grid; width: 58px; height: 58px; place-items: center; color: var(--navy-950); background: var(--gold-300); border-radius: 50%; font-family: Georgia, serif; font-size: 28px; }
.compliance-note h2 { color: var(--white); font-size: clamp(30px,4vw,46px); }
.compliance-note p:last-child { margin: 15px 0 0; color: #bfd0e2; font-size: 11px; line-height: 1.8; }
.compliance-note > a { min-width: 150px; padding-bottom: 8px; color: var(--gold-300); border-bottom: 1px solid rgba(225,197,134,.55); font-size: 12px; font-weight: 900; }
.compliance-note > a span { float: right; }

footer { display: grid; grid-template-columns: 1fr auto auto; gap: 34px; align-items: center; padding: 44px clamp(24px,5vw,76px); color: #91a8c0; background: var(--navy-950); border-top: 1px solid rgba(225,197,134,.24); font-size: 9px; }
footer p { margin: 0; }
a:focus-visible { outline: 3px solid var(--gold-300); outline-offset: 4px; }

@media (max-width: 980px) {
  .hero { min-height: auto; grid-template-columns: 1fr; }
  .hero-copy { min-height: 650px; }
  .sim-visual { min-height: 580px; }
  .fee-grid, .purchase-steps { grid-template-columns: repeat(2,1fr); }
  .fee-grid article:nth-child(2), .purchase-steps li:nth-child(2) { border-right: 0; }
  .fee-grid article:nth-child(-n+2), .purchase-steps li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .purchase-address { grid-template-columns: 1fr; }
  .address-panel { min-height: 320px; }
  .compliance-note { grid-template-columns: auto 1fr; }
  .compliance-note > a { grid-column: 2; }
  footer { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  html { scroll-padding-top: 76px; }
  .site-header { height: 72px; padding-inline: 16px; }
  .brand strong { font-size: 12px; }
  .brand small, .site-header nav a:not(.contact-link) { display: none; }
  .contact-link { font-size: 10px !important; }
  .hero-copy { min-height: 610px; padding: 64px 24px; }
  .sim-visual { min-height: 430px; }
  .sim-card { width: 78%; padding: 25px; }
  .operator-brand { width: min(170px, 70%); padding: 5px 7px; }
  .sim-label { margin-top: 12px; font-size: 18px; }
  .sim-chip { bottom: 25px; left: 25px; width: 68px; height: 52px; }
  .sim-copy { right: 25px; bottom: 27px; }
  .section, .tariff-inner { width: min(100% - 32px,1180px); }
  .fee-section, .purchase-section, .tariff-section { padding: 76px 0; }
  .section-heading { grid-template-columns: 1fr; gap: 16px; }
  .fee-grid, .purchase-steps { grid-template-columns: 1fr; }
  .fee-grid article, .fee-grid article:nth-child(2), .purchase-steps li, .purchase-steps li:nth-child(2) { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .fee-grid article:last-child, .purchase-steps li:last-child { border-bottom: 0; }
  .tariff-row { grid-template-columns: .65fr 1fr; }
  .tariff-row > *:nth-child(3) { grid-column: 1 / -1; border-right: 0; }
  .address-copy dl div { grid-template-columns: 1fr; gap: 7px; }
  .compliance-note { grid-template-columns: 1fr; margin-bottom: 72px; }
  .compliance-note > a { grid-column: auto; }
}

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