/* SMS landing: existing blue identity, native CSS, variance 5 / motion 3 / density 4.
   One radius scale: controls 6px, section illustrations and scenario panels 12px. */
body#smsLanding.sms-page { margin: 0; --sms-surface: #fff; --sms-soft: #f5f7fb; --sms-blue-soft: #edf2ff; --sms-ink: #202b37; --sms-muted: #596777; --sms-line: #e1e6eb; --sms-accent: #285ce2; }
#smsLanding.sms-page a { text-decoration: none; }
#smsLanding.sms-page .nav-bar li a[aria-current="page"] { color: var(--sms-accent); }
#smsLanding.sms-page #smsMain { max-width: none; margin: 0; padding: 0; }
.sms-shell { width: 1120px; max-width: calc(100% - 48px); margin: 0 auto; }
#smsLanding.sms-page :is(h1,h2,h3,p,figure,blockquote) { margin: 0; }
#smsLanding.sms-page :is(h1,h2,h3) { color: var(--sms-ink); }
.sms-hero { padding: 48px 0 40px; }
.sms-hero-grid { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(0,1fr); gap: 60px; align-items: center; }
.sms-eyebrow { color: var(--sms-accent); font-size: 15px; font-weight: 600; }
#smsLanding.sms-page h1 { font-size: clamp(36px,3.8vw,50px); line-height: 1.38; font-weight: 650; margin: 18px 0 24px; letter-spacing: -.025em; }
#smsLanding.sms-page h1 span { color: var(--sms-accent); }
#smsLanding.sms-page .sms-lead { color: var(--sms-muted); font-size: 17px; line-height: 1.9; }
.sms-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 20px 24px; margin-top: 32px; }
#smsLanding.sms-page .sms-button { display: inline-flex; align-items: center; justify-content: center; gap: 28px; min-height: 48px; padding: 12px 24px; border-radius: 6px; background: var(--sms-accent); color: #fff; font-size: 16px; font-weight: 600; white-space: nowrap; transition: background .18s,transform .18s; }
#smsLanding.sms-page .sms-button:hover { background: #1748bf; }
#smsLanding.sms-page .sms-button:active { transform: translateY(1px); }
#smsLanding.sms-page .sms-text-link { display: inline-flex; gap: 10px; align-items: center; color: var(--sms-accent); font-size: 14px; font-weight: 550; text-decoration: none; }
#smsLanding.sms-page .sms-text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
#smsLanding.sms-page .sms-hero-visual { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 456px; padding: 26px 24px 18px; background: var(--sms-blue-soft); border-radius: 12px; }
.sms-hero-visual img { width: 300px; max-width: 100%; height: 300px; object-fit: contain; }
.sms-hero-visual figcaption { font-size: 12px; color: var(--sms-muted); margin-top: 14px; }
.sms-capabilities { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 32px; padding: 28px 0; border-top: 1px solid var(--sms-line); border-bottom: 1px solid var(--sms-line); }
.sms-capabilities div { display: flex; flex-direction: column; gap: 4px; }
.sms-capabilities strong { color: var(--sms-ink); font-size: 18px; font-weight: 600; }
.sms-capabilities span { color: var(--sms-muted); font-size: 13px; }
.sms-section { padding-top: 72px; padding-bottom: 72px; scroll-margin-top: 100px; }
#smsLanding.sms-page h2 { font-size: 30px; line-height: 1.5; font-weight: 600; }
.sms-section-heading { margin-bottom: 32px; }
#smsLanding.sms-page .sms-section-heading p { color: var(--sms-muted); font-size: 15px; margin-top: 10px; }
.sms-scenarios { display: grid; grid-template-columns: minmax(0,1.1fr) minmax(0,1fr); gap: 20px; }
.sms-scenario { min-width: 0; padding: 28px; border: 1px solid var(--sms-line); border-radius: 12px; }
#smsLanding.sms-page .sms-marketing { grid-row: span 2; background: var(--sms-blue-soft); border-color: transparent; display: flex; flex-direction: column; justify-content: space-between; padding: 36px; }
#smsLanding.sms-page .sms-category { font-size: 13px; color: var(--sms-accent); font-weight: 600; margin-bottom: 10px; }
#smsLanding.sms-page h3 { font-size: 21px; line-height: 1.5; font-weight: 600; }
#smsLanding.sms-page .sms-scenario p:not(.sms-category) { color: var(--sms-muted); font-size: 14px; margin-top: 10px; line-height: 1.9; }
#smsLanding.sms-page blockquote { border-left: 2px solid #b2c3ee; padding-left: 16px; color: var(--sms-muted); font-size: 13px; margin-top: 22px; line-height: 1.9; }
#smsLanding.sms-page blockquote span { display: block; font-size: 11px; color: var(--sms-muted); margin-bottom: 6px; }
.sms-marketing blockquote { font-size: 17px; margin: 40px 0; }
.sms-tinted { background: var(--sms-soft); }
.sms-modes { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 72px; }
.sms-modes article + article { border-left: 1px solid var(--sms-line); padding-left: 48px; }
#smsLanding.sms-page .sms-mode-intro { font-size: 14px; color: var(--sms-muted); margin-top: 6px; }
.sms-modes ul { padding: 0; margin: 28px 0 20px; list-style: none; display: grid; gap: 22px; }
.sms-modes li { display: grid; grid-template-columns: 110px minmax(0,1fr); gap: 12px; font-size: 14px; }
.sms-modes strong { color: var(--sms-ink); font-weight: 550; }
.sms-modes li span { color: var(--sms-muted); }
.sms-steps { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 32px; list-style: none; padding: 0; margin: 32px 0 0; counter-reset: steps; }
.sms-steps li { counter-increment: steps; }
.sms-steps li::before { content: counter(steps,decimal-leading-zero); color: var(--sms-accent); display: block; font-size: 13px; font-weight: 650; border-top: 2px solid var(--sms-line); padding: 16px 0 12px; }
.sms-steps h3 { font-size: 18px; }
#smsLanding.sms-page .sms-steps p { font-size: 14px; color: var(--sms-muted); margin-top: 10px; line-height: 1.9; }
.sms-faq-layout { display: grid; grid-template-columns: minmax(0,.6fr) minmax(0,1.4fr); gap: 64px; }
.sms-faq details { padding: 20px 0; border-bottom: 1px solid var(--sms-line); }
.sms-faq details:first-child { padding-top: 0; }
.sms-faq summary { font-size: 16px; font-weight: 550; cursor: pointer; color: var(--sms-ink); }
#smsLanding.sms-page .sms-faq p { font-size: 14px; color: var(--sms-muted); line-height: 1.95; margin-top: 12px; }
.sms-final { display: flex; justify-content: space-between; align-items: center; gap: 32px; padding-bottom: 32px; }
#smsLanding.sms-page .sms-final p { margin-top: 12px; color: var(--sms-muted); font-size: 15px; }
#smsLanding.sms-page .sms-source { padding-bottom: 48px; font-size: 12px; color: var(--sms-muted); }
.sms-source a { color: var(--sms-accent); text-decoration: underline; text-underline-offset: 3px; }
@media(max-width:1050px) {
  .sms-hero-grid { gap: 32px; }
  #smsLanding.sms-page h1 { font-size: 38px; }
  #smsLanding.sms-page .sms-lead { font-size: 16px; }
  .sms-desktop-break { display: none; }
  .sms-modes { gap: 36px; }
  .sms-modes article + article { padding-left: 32px; }
}
@media(max-width:760px) {
  .sms-shell { max-width: calc(100% - 40px); }
  .sms-hero { padding: 36px 0 28px; }
  .sms-hero-grid { grid-template-columns: minmax(0,1fr); gap: 32px; }
  #smsLanding.sms-page h1 { font-size: clamp(27px,7.4vw,40px); line-height: 1.45; margin: 14px 0 18px; }
  #smsLanding.sms-page .sms-lead { font-size: 15px; }
  .sms-actions { margin-top: 24px; gap: 16px; }
  #smsLanding.sms-page .sms-hero-visual { min-height: auto; padding: 24px; }
  .sms-hero-visual img { width: 230px; height: 230px; }
  .sms-capabilities { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; padding: 24px 0; }
  .sms-capabilities strong { font-size: 16px; }
  .sms-capabilities span { font-size: 12px; }
  .sms-section { padding-top: 44px; padding-bottom: 44px; scroll-margin-top: 124px; }
  #smsLanding.sms-page h2 { font-size: 25px; }
  .sms-scenarios,.sms-modes,.sms-faq-layout { grid-template-columns: minmax(0,1fr); gap: 24px; }
  #smsLanding.sms-page .sms-marketing { grid-row: auto; padding: 26px; }
  .sms-scenario { padding: 26px; }
  .sms-marketing blockquote { font-size: 15px; margin: 28px 0; }
  .sms-modes article + article { padding: 28px 0 0; border-left: 0; border-top: 1px solid var(--sms-line); }
  .sms-modes li { grid-template-columns: 100px minmax(0,1fr); }
  .sms-steps { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
  .sms-faq-layout h2 br { display: none; }
  .sms-faq-layout .sms-section-heading { margin: 0; }
  .sms-final { flex-direction: column; align-items: flex-start; gap: 24px; }
  #smsLanding.sms-page .sms-source { padding-bottom: 32px; }
}
@media(prefers-color-scheme:dark) {
  body#smsLanding.sms-page { --sms-surface: #151b25; --sms-soft: #1b2330; --sms-blue-soft: #1d2d4c; --sms-ink: #e4ebf5; --sms-muted: #b0bed1; --sms-line: #344258; --sms-accent: #9ab8ff; color: var(--sms-ink); background: var(--sms-surface); }
  #smsLanding.sms-page :is(.nav-logo img,.footer-left > img) { filter: brightness(0) invert(1); }
  #smsLanding.sms-page .nav-bar { background: var(--sms-surface); border-color: var(--sms-line); }
  #smsLanding.sms-page .nav-bar li a { color: var(--sms-ink); }
  #smsLanding.sms-page .nav-bar li a.active { color: var(--sms-accent); }
  #smsLanding.sms-page .nav-bar .btn-plain { background: transparent; color: var(--sms-accent); border-color: var(--sms-accent); }
  #smsLanding.sms-page .footer { background: var(--sms-soft); border-color: var(--sms-line); }
  #smsLanding.sms-page .footer .item-title { color: var(--sms-ink); }
  #smsLanding.sms-page .footer .right-item :is(a,p),#smsLanding.sms-page .footer .copyright,#smsLanding.sms-page .footer .left-qrcode p { color: var(--sms-muted); border-color: var(--sms-line); }
  #smsLanding.sms-page .sms-button { background: #285ce2; }
  #smsLanding.sms-page .sms-button:hover { background: #1748bf; }
  #smsLanding.sms-page :is(a,summary):focus-visible { outline-color: var(--sms-accent); }
}
@media(prefers-reduced-motion:reduce) { #smsLanding.sms-page * { scroll-behavior: auto !important; transition: none !important; } }