:root {
  --blue: #2477f3;
  --blue-dark: #155cca;
  --blue-soft: #eaf3ff;
  --navy: #12213b;
  --text: #1c2940;
  --muted: #66748a;
  --line: #dfe6f0;
  --surface: #ffffff;
  --soft: #f4f7fb;
  --gold: #f6b91f;
  --green: #12815f;
  --green-soft: #e9f8f2;
  --red: #b83b4c;
  --red-soft: #fff0f2;
  --shadow: 0 20px 60px rgba(32, 64, 110, .11);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; color: var(--text); background: #fff; font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif; font-size: 16px; line-height: 1.55; }
a { color: inherit; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }
.shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.compact-shell { width: min(1040px, calc(100% - 40px)); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 100; transform: translateY(-150%); padding: 12px 16px; border-radius: 12px; background: var(--navy); color: white; }
.skip-link:focus { transform: none; }

.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(223, 230, 240, .8); background: rgba(255, 255, 255, .9); backdrop-filter: blur(18px); }
.header-inner { min-height: 76px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; min-width: 190px; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 14px; background: linear-gradient(145deg, #398bff, #1867dc); box-shadow: 0 8px 18px rgba(36, 119, 243, .25); color: white; font-weight: 900; font-size: 21px; }
.brand b, .brand small { display: block; }
.brand b { font-size: 17px; line-height: 1.1; }
.brand small { margin-top: 3px; color: var(--muted); font-size: 12px; }
.header-nav { display: flex; justify-content: center; flex: 1; gap: 28px; }
.header-nav a { text-decoration: none; color: #435169; font-size: 14px; font-weight: 700; }
.header-nav a:hover { color: var(--blue); }
.header-action { padding: 11px 17px; border-radius: 12px; text-decoration: none; color: var(--blue); background: var(--blue-soft); font-size: 14px; font-weight: 800; }

.hero { overflow: hidden; padding: 70px 0 45px; background: radial-gradient(circle at 82% 20%, rgba(75, 151, 255, .15), transparent 28%), linear-gradient(180deg, #f8fbff 0, #fff 100%); }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; min-height: 560px; }
.eyebrow, .kicker { color: var(--blue); text-transform: uppercase; letter-spacing: .08em; font-size: 12px; font-weight: 900; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; padding: 8px 12px; border-radius: 999px; background: var(--blue-soft); }
.eyebrow span { font-size: 9px; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 700px; margin: 22px 0 20px; font-size: clamp(42px, 5.6vw, 70px); line-height: 1.02; letter-spacing: -.045em; }
.hero-lead { max-width: 650px; color: #54637a; font-size: 19px; line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; padding: 12px 20px; border: 1px solid transparent; border-radius: 14px; text-decoration: none; font-weight: 850; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: white; background: linear-gradient(180deg, #3388ff, #1d6fe7); box-shadow: 0 12px 28px rgba(36, 119, 243, .25); }
.button.primary:hover { box-shadow: 0 15px 32px rgba(36, 119, 243, .35); }
.button.secondary { border-color: var(--line); background: white; color: var(--text); }
.button.full { width: 100%; margin-top: auto; }
.button.light { min-width: 190px; background: white; color: var(--blue-dark); }
.trust-list { display: flex; flex-wrap: wrap; gap: 20px; margin: 28px 0 0; padding: 0; list-style: none; color: #5a687d; font-size: 13px; font-weight: 700; }
.trust-list span { color: var(--green); }
.hero-visual { position: relative; min-height: 520px; display: flex; align-items: end; justify-content: center; }
.hero-visual::before { content: ""; position: absolute; width: 390px; height: 390px; bottom: 36px; border-radius: 50%; background: linear-gradient(145deg, #e6f3ff, #cfe6ff); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .9); }
.hero-visual img { position: relative; z-index: 2; width: min(390px, 90%); height: auto; filter: drop-shadow(0 28px 32px rgba(42, 71, 109, .18)); animation: codiFloat 5s ease-in-out infinite; }
@keyframes codiFloat { 0%, 100% { transform: translateY(0) rotate(-.5deg); } 50% { transform: translateY(-9px) rotate(.5deg); } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .hero-visual img { animation: none; } * { transition: none !important; } }
.speech-card { position: absolute; z-index: 3; top: 80px; left: 8px; padding: 14px 17px; border: 1px solid rgba(255,255,255,.9); border-radius: 18px 18px 5px 18px; background: rgba(255,255,255,.92); box-shadow: var(--shadow); }
.speech-card b, .speech-card span { display: block; }
.speech-card b { font-size: 15px; }.speech-card span { color: var(--muted); font-size: 12px; }
.steps-pill { position: absolute; z-index: 4; right: 5px; bottom: 90px; display: flex; align-items: center; gap: 10px; padding: 11px 14px; border-radius: 18px; background: var(--navy); color: white; box-shadow: var(--shadow); }
.steps-pill b { font-size: 24px; }.steps-pill span { font-size: 11px; line-height: 1.2; }
.float-dot { position: absolute; border-radius: 50%; }.dot-one { width: 14px; height: 14px; top: 68px; right: 55px; background: var(--gold); }.dot-two { width: 9px; height: 9px; left: 25px; bottom: 120px; background: #5dd6ae; }

.section { padding: 100px 0; }
.section.soft { background: var(--soft); }
.section-heading { margin-bottom: 38px; }
.section-heading.centered { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.section-heading.split { display: flex; justify-content: space-between; align-items: end; gap: 30px; }
.section-heading h2, .article-aside h2, .full-grid h2, .scenario-copy h2, .final-inner h2 { margin: 8px 0 12px; font-size: clamp(32px, 4vw, 48px); line-height: 1.08; letter-spacing: -.035em; }
.section-heading p { max-width: 720px; margin-bottom: 0; color: var(--muted); }
.path-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.path-card { position: relative; display: flex; flex-direction: column; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: 0 12px 40px rgba(32, 64, 110, .06); }
.path-card.recommended { border: 2px solid #64a3ff; box-shadow: 0 20px 54px rgba(36,119,243,.13); }
.path-topline { display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.path-icon { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 17px; font-size: 23px; }.path-icon.blue { background: var(--blue-soft); color: var(--blue); }.path-icon.gold { background: #fff5d6; color: #bb7a00; }
.tag { display: inline-flex; align-items: center; width: fit-content; padding: 7px 10px; border-radius: 999px; font-size: 11px; font-weight: 900; }.tag.success { color: var(--green); background: var(--green-soft); }.tag.waiting { color: #8c5d05; background: #fff5d8; }
.path-card h3 { margin: 24px 0 9px; font-size: 27px; }.path-card > p { color: var(--muted); }.path-card ul { display: grid; gap: 10px; margin: 10px 0 22px; padding: 0; list-style: none; }.path-card li { position: relative; padding-left: 27px; }.path-card li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 900; }
.notice { padding: 15px 16px; border-radius: 14px; color: #37506b; background: #edf5ff; font-size: 13px; }.notice.compact { margin-bottom: 20px; }.notice.warning { color: #76570f; background: #fff7df; }

.search-box { width: min(390px, 100%); display: flex; align-items: center; gap: 9px; padding: 0 15px; border: 1px solid var(--line); border-radius: 14px; background: white; color: var(--muted); }.search-box:focus-within { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(36,119,243,.1); }.search-box input { width: 100%; padding: 14px 0; border: 0; outline: 0; background: transparent; color: var(--text); }
.guide-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.guide-card { min-height: 275px; display: flex; flex-direction: column; position: relative; padding: 23px; border: 1px solid var(--line); border-radius: 22px; background: white; text-decoration: none; transition: transform .2s, border-color .2s, box-shadow .2s; }.guide-card:hover { transform: translateY(-5px); border-color: #96c0fb; box-shadow: var(--shadow); }.guide-number { color: #93a0b3; font-size: 11px; font-weight: 900; letter-spacing: .1em; }.guide-icon { width: 44px; height: 44px; display: grid; place-items: center; margin: 14px 0; border-radius: 14px; background: var(--blue-soft); color: var(--blue); font-size: 21px; font-weight: 900; }.guide-card h3 { margin-bottom: 8px; font-size: 18px; line-height: 1.25; }.guide-card p { color: var(--muted); font-size: 13px; }.guide-meta { display: flex; flex-wrap: wrap; gap: 6px 10px; margin-top: auto; color: #7b8798; font-size: 11px; }.guide-meta i { color: #9a6a15; font-style: normal; }.empty-search { padding: 30px; border-radius: 18px; background: white; text-align: center; color: var(--muted); }

.article-layout { display: grid; grid-template-columns: 285px 1fr; align-items: start; gap: 55px; }.article-aside { position: sticky; top: 110px; }.article-aside > p { color: var(--muted); }.time-card { display: flex; gap: 12px; align-items: center; margin: 24px 0; padding: 15px; border-radius: 16px; background: var(--soft); }.time-card > span { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; background: white; color: var(--blue); }.time-card b, .time-card small { display: block; }.time-card small { color: var(--muted); }.article-nav { display: grid; border-top: 1px solid var(--line); }.article-nav a { padding: 13px 0; border-bottom: 1px solid var(--line); text-decoration: none; color: #56657b; font-size: 13px; font-weight: 700; }.article-nav a:hover { color: var(--blue); }
.article-content { min-width: 0; }.video-placeholder { min-height: 310px; display: grid; grid-template-columns: 250px 1fr; align-items: center; gap: 30px; margin-bottom: 26px; padding: 28px 34px; overflow: hidden; border-radius: var(--radius); background: linear-gradient(145deg, #142643, #1d3d6f); color: white; }.phone-demo { width: 180px; height: 275px; justify-self: center; padding: 12px; border: 5px solid #0a1425; border-radius: 30px; background: white; box-shadow: 0 25px 30px rgba(0,0,0,.28); }.phone-speaker { width: 42px; height: 5px; display: block; margin: -3px auto 12px; border-radius: 5px; background: #d9e2ef; }.demo-screen { height: 235px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 11px; border-radius: 18px; background: linear-gradient(#eef7ff, #dceeff); color: var(--text); text-align: center; }.demo-screen b { color: var(--blue); font-size: 11px; }.demo-screen i { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: white; font-style: normal; font-weight: 900; }.demo-screen span { font-size: 12px; font-weight: 800; }.demo-screen em { padding: 6px 10px; border-radius: 8px; background: #ffcb44; color: #674900; font-size: 9px; font-style: normal; font-weight: 900; }.video-copy h3 { margin: 15px 0 9px; font-size: 27px; line-height: 1.15; }.video-copy p { color: #bfcee3; }.video-copy small { color: #95acce; }
.step-card { scroll-margin-top: 100px; display: grid; grid-template-columns: 48px 1fr; gap: 18px; margin-top: 16px; padding: 26px; border: 1px solid var(--line); border-radius: 22px; background: white; }.step-badge { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 14px; background: var(--blue); color: white; font-weight: 900; box-shadow: 0 8px 18px rgba(36,119,243,.22); }.step-body h3 { margin: 7px 0 16px; font-size: 22px; }.step-body ol { display: grid; gap: 12px; padding-left: 22px; }.step-body li::marker { color: var(--blue); font-weight: 900; }.callout { display: grid; gap: 3px; margin-top: 18px; padding: 15px 17px; border-left: 4px solid var(--blue); border-radius: 5px 14px 14px 5px; background: var(--blue-soft); font-size: 13px; }.callout.warning { border-left-color: var(--gold); background: #fff8e6; }.callout.danger { border-left-color: #df6070; background: var(--red-soft); }.small-note { margin: 14px 0 0; color: var(--muted); font-size: 12px; }.two-column-steps { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }.two-column-steps > div { padding: 18px; border-radius: 16px; background: var(--soft); }.mini-label { display: inline-block; padding: 5px 8px; border-radius: 8px; background: var(--blue-soft); color: var(--blue); font-size: 11px; font-weight: 900; }.mini-label.child { background: #fff4d5; color: #936000; }.success-panel { display: flex; align-items: center; gap: 14px; margin-top: 18px; padding: 17px; border-radius: 16px; background: var(--green-soft); color: #136b52; }.success-panel > span { width: 40px; height: 40px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; background: var(--green); color: white; font-weight: 900; }.success-panel b, .success-panel small { display: block; }.success-panel small { margin-top: 3px; color: #47796c; }

.dark-section { color: white; background: linear-gradient(145deg, #0e1b30, #1c3862); }.full-grid { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 70px; }.dark-tag { color: #ffe098 !important; background: rgba(246,185,31,.13) !important; }.dark-lead { color: #bdcbe0; font-size: 18px; }.dark-warning { display: grid; gap: 4px; margin-top: 28px; padding: 18px; border: 1px solid rgba(255,221,139,.24); border-radius: 16px; background: rgba(246,185,31,.09); color: #ffe7ae; }.roadmap { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }.roadmap li { display: grid; grid-template-columns: 50px 1fr; align-items: center; gap: 16px; padding: 17px; border: 1px solid rgba(255,255,255,.1); border-radius: 17px; background: rgba(255,255,255,.055); }.roadmap li > span { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 14px; background: rgba(89,158,255,.18); color: #8fc1ff; font-weight: 900; }.roadmap b, .roadmap small { display: block; }.roadmap small { margin-top: 3px; color: #9fb0c9; }

.flow-row { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: stretch; gap: 10px; }.flow-card { padding: 22px; border: 1px solid var(--line); border-radius: 20px; background: white; }.flow-card > span { width: 32px; height: 32px; display: grid; place-items: center; margin-bottom: 15px; border-radius: 10px; background: var(--blue-soft); color: var(--blue); font-weight: 900; }.flow-card b { display: block; }.flow-card p { margin: 7px 0 0; color: var(--muted); font-size: 13px; }.flow-arrow { display: grid; place-items: center; color: #9ca9b9; }
.scenario-grid { display: grid; grid-template-columns: 1fr 340px; align-items: center; gap: 80px; }.scenario-copy > p { color: var(--muted); font-size: 18px; }.check-list { display: grid; gap: 11px; padding: 0; list-style: none; }.check-list li { position: relative; padding-left: 28px; }.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 900; }.unlock-demo { padding: 32px 26px; border-radius: 38px; background: linear-gradient(180deg, #e5f4ff, #d3ebff); box-shadow: 0 20px 50px rgba(37,90,150,.17); text-align: center; }.unlock-label { color: var(--blue); font-size: 11px; font-weight: 900; }.mini-codi { width: 90px; height: 90px; display: grid; place-items: center; margin: 20px auto; border-radius: 50%; background: white; color: var(--gold); font-size: 45px; font-weight: 900; }.unlock-demo h3 { margin: 0 0 5px; font-size: 25px; }.unlock-demo p { color: var(--muted); }.code-boxes { display: flex; justify-content: center; gap: 9px; margin: 22px 0; }.code-boxes i { width: 48px; height: 55px; display: grid; place-items: center; border: 2px solid #96b9dc; border-radius: 13px; background: white; color: #7f98b3; font-style: normal; font-size: 20px; }.unlock-demo button { width: 100%; padding: 13px; border: 0; border-radius: 13px; background: #9ebbd7; color: white; font-weight: 850; }
.option-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }.option-grid article { padding: 27px; border: 1px solid var(--line); border-radius: 22px; }.option-grid article > span { width: 45px; height: 45px; display: grid; place-items: center; margin-bottom: 18px; border-radius: 15px; background: var(--blue-soft); color: var(--blue); font-size: 22px; }.option-grid h3 { margin-bottom: 8px; }.option-grid p { margin: 0; color: var(--muted); font-size: 14px; }

.accordion-list, .faq-grid { display: grid; gap: 11px; }.accordion-list details, .faq-grid details { border: 1px solid var(--line); border-radius: 18px; background: white; }.accordion-list summary, .faq-grid summary { display: flex; align-items: center; gap: 12px; padding: 17px 19px; cursor: pointer; list-style: none; }.accordion-list summary::-webkit-details-marker, .faq-grid summary::-webkit-details-marker { display: none; }.accordion-list summary small { margin-left: 2px; color: var(--muted); }.accordion-list summary i, .faq-grid summary i { margin-left: auto; color: var(--blue); font-style: normal; font-size: 20px; transition: transform .2s; }.accordion-list details[open] summary i, .faq-grid details[open] summary i { transform: rotate(45deg); }.detail-body { padding: 0 20px 18px 67px; color: var(--muted); font-size: 14px; }.detail-body p { margin: 8px 0; }.brand-chip { width: 36px; height: 36px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 11px; color: white; font-weight: 900; }.brand-chip.samsung { background: #2459d9; }.brand-chip.xiaomi { background: #ef7200; }.brand-chip.honor { background: #111; }.brand-chip.other { background: #25a36f; }.faq-grid { grid-template-columns: 1fr 1fr; }.faq-grid details { align-self: start; }.faq-grid summary { font-weight: 800; }.faq-grid details p { margin: 0; padding: 0 20px 20px; color: var(--muted); font-size: 14px; }

.final-cta { padding: 72px 0; color: white; background: linear-gradient(120deg, #1e72e7, #348fff); }.final-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }.final-inner .kicker { color: #dbeaff; }.final-inner h2 { margin-bottom: 8px; }.final-inner p { margin: 0; color: #dceaff; }.site-footer { padding: 38px 0; border-top: 1px solid var(--line); background: white; }.footer-inner { display: grid; grid-template-columns: 230px 1fr auto; align-items: center; gap: 25px; }.footer-inner p { margin: 0; color: var(--muted); font-size: 12px; }.footer-inner > a { color: var(--blue); font-size: 13px; font-weight: 800; }.footer-brand { min-width: 0; }

@media (max-width: 1020px) {
  .header-nav { display: none; }
  .header-action { margin-left: auto; }
  .hero-grid { grid-template-columns: 1fr 420px; }
  .guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-layout { grid-template-columns: 230px 1fr; gap: 30px; }
  .flow-row { grid-template-columns: 1fr 1fr; }.flow-arrow { display: none; }
  .scenario-grid { gap: 35px; }
}

@media (max-width: 780px) {
  .shell, .compact-shell { width: min(100% - 28px, 640px); }
  .header-inner { min-height: 66px; }.header-action { display: none; }.brand { min-width: 0; }
  .hero { padding: 45px 0 25px; }.hero-grid { display: flex; flex-direction: column; min-height: auto; }.hero-copy { text-align: center; }.hero-lead { font-size: 17px; }.hero-actions, .trust-list { justify-content: center; }.hero-visual { width: 100%; min-height: 400px; margin-top: 15px; }.hero-visual::before { width: 310px; height: 310px; }.hero-visual img { width: 300px; }.speech-card { top: 45px; left: 2%; }.steps-pill { right: 2%; bottom: 55px; }
  .section { padding: 72px 0; }.section-heading.split { display: grid; align-items: start; }.path-grid, .full-grid, .scenario-grid { grid-template-columns: 1fr; }.guide-grid { grid-template-columns: 1fr 1fr; }.guide-card { min-height: 250px; }
  .article-layout { display: block; }.article-aside { position: static; margin-bottom: 25px; }.article-nav { grid-template-columns: 1fr 1fr; column-gap: 20px; }.video-placeholder { grid-template-columns: 1fr; text-align: center; }.two-column-steps { grid-template-columns: 1fr; }.full-grid { gap: 35px; }.scenario-grid { gap: 35px; }.unlock-demo { max-width: 380px; width: 100%; margin: auto; }.option-grid { grid-template-columns: 1fr; }.faq-grid { grid-template-columns: 1fr; }.final-inner { display: grid; text-align: center; }.button.light { justify-self: center; }.footer-inner { grid-template-columns: 1fr; text-align: center; }.footer-brand { justify-self: center; }.footer-inner > a { justify-self: center; }
}

@media (max-width: 520px) {
  body { font-size: 15px; }
  h1 { font-size: 41px; }.section-heading h2, .article-aside h2, .full-grid h2, .scenario-copy h2, .final-inner h2 { font-size: 33px; }
  .brand small { display: none; }.brand-mark { width: 38px; height: 38px; border-radius: 12px; }
  .hero-actions { display: grid; }.hero-actions .button { width: 100%; }.trust-list { display: grid; gap: 8px; text-align: left; width: fit-content; margin-inline: auto; }
  .hero-visual { min-height: 360px; }.hero-visual::before { width: 270px; height: 270px; }.hero-visual img { width: 260px; }.speech-card { top: 30px; }.steps-pill { bottom: 45px; }
  .path-card { padding: 23px; }.path-topline { align-items: flex-start; }.path-topline .tag { max-width: 175px; }
  .guide-grid { grid-template-columns: 1fr; }.guide-card { min-height: 225px; }
  .article-nav { grid-template-columns: 1fr; }.video-placeholder { padding: 24px 18px; }.step-card { grid-template-columns: 1fr; padding: 21px; }.step-badge { width: 38px; height: 38px; }.flow-row { grid-template-columns: 1fr; }.code-boxes i { width: 42px; height: 50px; }.detail-body { padding-left: 20px; }.accordion-list summary small { display: none; }
}