:root {
  --ink: #00091f;
  --ink-soft: #040b1b;
  --muted: #657082;
  --blue: #1298f8;
  --cyan: #00aeef;
  --green: #01fca1;
  --green-soft: #3bffae;
  --surface: #f5f7fa;
  --white: #fff;
  --line: #d8dce4;
  --gradient: linear-gradient(90deg, var(--blue) 0%, var(--green) 100%);
  --shadow: 0 22px 55px rgba(0, 9, 31, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--surface); font-family: Inter, sans-serif; }
button, input { font: inherit; }
a { color: inherit; }

.hero { min-height: 560px; color: var(--white); background: radial-gradient(circle at 82% 25%, rgba(18, 152, 248, .2), transparent 25%), radial-gradient(circle at 18% 86%, rgba(1, 252, 161, .09), transparent 24%), var(--ink); position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; opacity: .19; background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); background-size: 52px 52px; mask-image: linear-gradient(to bottom, black, transparent 75%); }
.hero::after { content: ""; position: absolute; width: 420px; height: 420px; border: 1px solid rgba(18,152,248,.23); border-radius: 50%; right: -160px; bottom: -185px; box-shadow: 0 0 0 65px rgba(1,252,161,.035), 0 0 0 130px rgba(18,152,248,.025); }
.nav { max-width: 1180px; margin: 0 auto; padding: 23px 32px; display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 2; border-bottom: 1px solid rgba(255,255,255,.09); }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand-logo { width: 148px; height: 78px; object-fit: contain; display: block; }
.support-link { color: #d8e3f1; font-family: "Anek Latin", sans-serif; font-size: 15px; font-weight: 600; text-decoration: none; padding: 10px 17px; border: 1px solid rgba(255,255,255,.22); border-radius: 8px; transition: border-color .2s, color .2s, transform .2s; }
.support-link:hover { color: var(--green); border-color: var(--green); transform: translateY(-1px); }
.hero-content { width: min(790px, calc(100% - 40px)); margin: 70px auto 0; text-align: center; position: relative; z-index: 2; }
.eyebrow { margin: 0 0 16px; color: #c8d6e7; text-transform: uppercase; letter-spacing: .17em; font-weight: 700; font-size: 11px; }
.eyebrow span { display: inline-block; width: 8px; height: 8px; margin-right: 8px; border-radius: 50%; background: var(--gradient); box-shadow: 0 0 18px rgba(1,252,161,.6); }
h1, h2, h3 { font-family: "Anek Latin", sans-serif; }
h1 { margin: 0; font-size: clamp(43px, 6.2vw, 67px); letter-spacing: -.035em; line-height: 1; font-weight: 700; }
h1 span { color: transparent; background: var(--gradient); -webkit-background-clip: text; background-clip: text; }
.hero-copy { color: #b8c5d6; font-size: 17px; line-height: 1.6; margin: 20px 0 32px; }
.search-box { height: 70px; padding: 0 20px; border-radius: 10px; background: var(--white); display: flex; align-items: center; gap: 14px; box-shadow: 0 18px 55px rgba(0,0,0,.3); text-align: left; border: 1px solid transparent; }
.search-box:focus-within { border-color: var(--green); box-shadow: 0 18px 55px rgba(0,0,0,.3), 0 0 0 4px rgba(1,252,161,.12); }
.search-box svg { width: 24px; fill: none; stroke: var(--blue); stroke-width: 2; stroke-linecap: round; }
.search-box input { border: 0; outline: 0; width: 100%; color: var(--ink); font-size: 16px; }
.search-box input::placeholder { color: #8f98a7; }
kbd { color: #677287; background: #eef1f5; border: 1px solid #dfe3e9; border-radius: 6px; padding: 5px 8px; font-size: 11px; white-space: nowrap; }
.search-hint { color: #8495aa; font-size: 12px; margin-top: 14px; }

.content { max-width: 980px; margin: 0 auto; padding: 78px 28px 90px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.section-kicker { margin: 0 0 7px; color: var(--blue); text-transform: uppercase; font-weight: 700; letter-spacing: .15em; font-size: 11px; }
.section-heading h2 { margin: 0; font-size: 34px; letter-spacing: -.025em; line-height: 1.05; }
.result-count { color: var(--muted); font-size: 13px; }
.category-pills { display: flex; flex-wrap: wrap; gap: 9px; margin: 29px 0 25px; }
.pill { padding: 9px 17px; color: #536074; background: var(--white); border: 1px solid var(--line); border-radius: 7px; cursor: pointer; font-size: 13px; font-weight: 600; transition: transform .2s, border-color .2s; }
.pill:hover { border-color: var(--blue); transform: translateY(-1px); }
.pill.active { color: var(--ink); background: var(--gradient); border-color: transparent; box-shadow: 0 8px 22px rgba(18,152,248,.2); }
.faq-list { display: grid; gap: 12px; }
.all-questions-cta { margin: 28px 0 0; display: flex; justify-content: center; }
.all-questions-cta a { padding: 13px 20px; display: inline-flex; align-items: center; gap: 12px; color: var(--ink); background: var(--white); border: 1px solid var(--blue); border-radius: 8px; text-decoration: none; font-weight: 700; transition: transform .2s, color .2s, background .2s, box-shadow .2s; }
.all-questions-cta a:hover { color: var(--white); background: var(--ink); border-color: var(--ink); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0,9,31,.14); }
.faq-item { background: var(--white); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; transition: box-shadow .2s, border-color .2s, transform .2s; }
.faq-item:hover { border-color: rgba(18,152,248,.55); transform: translateY(-1px); }
.faq-item[open] { box-shadow: var(--shadow); border-color: rgba(18,152,248,.35); }
.faq-item summary { min-height: 78px; padding: 18px 21px; display: grid; grid-template-columns: 40px 1fr 28px; gap: 14px; align-items: center; cursor: pointer; list-style: none; font-family: "Anek Latin", sans-serif; font-size: 17px; font-weight: 600; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon { width: 40px; height: 40px; display: grid; place-items: center; color: var(--ink); background: var(--gradient); border-radius: 8px; font-family: Inter, sans-serif; font-weight: 700; }
.toggle { width: 27px; height: 27px; border-radius: 7px; background: #eef4fa; position: relative; }
.toggle::before, .toggle::after { content: ""; position: absolute; background: var(--blue); width: 10px; height: 1.5px; left: 8.5px; top: 12.5px; }
.toggle::after { transform: rotate(90deg); transition: transform .2s; }
.faq-item[open] .toggle::after { transform: rotate(0); }
.answer { margin: 0 20px 21px 75px; padding: 2px 18px 4px; color: #556177; border-left: 2px solid var(--green); line-height: 1.72; }
.answer p { margin: 0 0 12px; }
.answer ol { padding-left: 20px; }
.answer .tip { padding: 12px 14px; color: #16483e; background: rgba(1,252,161,.1); border-radius: 7px; font-size: 14px; }
.platform-link { margin: 17px 0; padding: 13px 16px; display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--ink); background: var(--gradient); border-radius: 8px; text-decoration: none; font-weight: 700; transition: transform .2s, box-shadow .2s; }
.platform-link:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(18,152,248,.2); }
.email-note { padding: 13px 15px; color: #49566b; background: #f3f6fa; border-left: 3px solid var(--blue); border-radius: 0 7px 7px 0; font-size: 14px; }
.password-guide { width: min(100%, 430px); height: auto; margin: 18px auto 8px; display: block; border: 1px solid rgba(18,152,248,.28); border-radius: 10px; box-shadow: 0 12px 32px rgba(0,9,31,.12); }
.platform-guide { width: min(100%, 960px); height: auto; margin: 18px auto 8px; display: block; border: 1px solid rgba(18,152,248,.28); border-radius: 10px; box-shadow: 0 12px 32px rgba(0,9,31,.12); }
.zoom-steps { margin: 18px 0 22px; padding-left: 24px !important; }
.zoom-steps li { margin-bottom: 28px; padding-left: 4px; }
.zoom-steps li::marker { color: var(--blue); font-weight: 700; }
.zoom-steps li p { margin-bottom: 10px; }
.zoom-guide { width: min(100%, 820px); }
.zoom-dialog-guide { width: min(100%, 505px); }
.zoom-preview-guide { width: min(100%, 650px); }
.app-downloads { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 18px 0 22px; }
.store-card { min-height: 72px; padding: 13px 15px; display: grid; grid-template-columns: 40px 1fr 18px; align-items: center; gap: 12px; color: var(--white); background: var(--ink); border: 1px solid rgba(18,152,248,.35); border-radius: 9px; text-decoration: none; transition: transform .2s, border-color .2s, box-shadow .2s; }
.store-card:hover { transform: translateY(-2px); border-color: var(--green); box-shadow: 0 10px 26px rgba(0,9,31,.18); }
.store-icon { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 8px; color: var(--ink); background: var(--gradient); font-size: 17px; }
.apple-icon { font-size: 20px; }
.store-card small, .store-card strong { display: block; line-height: 1.2; }
.store-card small { color: #91a1b8; font-size: 10px; text-transform: uppercase; letter-spacing: .08em; }
.store-card strong { margin-top: 3px; color: var(--white); font-family: "Anek Latin", sans-serif; font-size: 17px; }
.store-arrow { color: var(--green); }
.video-guide { margin: 17px 0 20px; padding: 15px; display: grid; grid-template-columns: 42px 1fr auto; align-items: center; gap: 13px; color: var(--ink); background: linear-gradient(90deg, rgba(18,152,248,.09), rgba(1,252,161,.12)); border: 1px solid rgba(18,152,248,.22); border-radius: 9px; text-decoration: none; transition: border-color .2s, transform .2s; }
.video-guide:hover { transform: translateY(-1px); border-color: var(--blue); }
.video-play { width: 42px; height: 42px; display: grid; place-items: center; color: var(--white); background: var(--gradient); border-radius: 50%; padding-left: 2px; }
.video-guide strong, .video-guide small { display: block; }
.video-guide strong { font-family: "Anek Latin", sans-serif; font-size: 16px; }
.video-guide small { margin-top: 2px; color: var(--muted); font-size: 11px; }
.video-action { color: #0878c9; font-size: 12px; font-weight: 700; white-space: nowrap; }
.app-password-guide { width: min(100%, 300px); }
.app-password-step { margin-top: 24px !important; padding-top: 18px; border-top: 1px solid var(--line); }
.mobile-guide-grid { margin: 18px 0 22px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; align-items: start; }
.mobile-guide-step { min-width: 0; }
.mobile-guide-step p { min-height: 74px; }
.mobile-guide { width: min(100%, 310px); height: auto; margin: 10px auto 0; display: block; border: 1px solid rgba(18,152,248,.28); border-radius: 10px; box-shadow: 0 12px 32px rgba(0,9,31,.12); }
.embedded-video { width: min(100%, 760px); aspect-ratio: 16 / 9; margin: 18px auto 8px; overflow: hidden; background: var(--ink); border: 1px solid rgba(18,152,248,.28); border-radius: 10px; box-shadow: 0 12px 32px rgba(0,9,31,.12); }
.embedded-video iframe { width: 100%; height: 100%; display: block; border: 0; }
.video-duration { margin-top: 9px !important; color: var(--muted); text-align: center; font-size: 12px; }
.empty-state { padding: 55px 20px; text-align: center; color: var(--muted); background: var(--white); border: 1px dashed #bac3d0; border-radius: 10px; }
.empty-state > span { color: var(--blue); font-size: 32px; }
.empty-state h3 { color: var(--ink); margin-bottom: 4px; }
.empty-state p { margin-top: 0; }
.empty-state button { color: var(--ink); background: var(--gradient); border: 0; border-radius: 7px; padding: 10px 16px; cursor: pointer; font-weight: 700; }
.contact-card { margin-top: 52px; padding: 30px 32px; display: flex; justify-content: space-between; align-items: center; gap: 30px; border-radius: 12px; color: var(--white); background: radial-gradient(circle at 12% 0%, rgba(18,152,248,.28), transparent 38%), var(--ink); position: relative; overflow: hidden; }
.contact-card::after { content: ""; position: absolute; width: 120px; height: 120px; border-radius: 50%; right: -50px; bottom: -65px; border: 1px solid rgba(1,252,161,.35); }
.contact-card > div { display: flex; align-items: center; gap: 17px; position: relative; z-index: 1; }
.contact-icon { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 8px; background: var(--gradient); font-size: 20px; }
.contact-card h2 { margin: 0 0 4px; font-size: 21px; }
.contact-card p { margin: 0; color: #9cabc0; font-size: 14px; }
.contact-card > a { padding: 13px 19px; border-radius: 8px; color: var(--ink); background: var(--gradient); text-decoration: none; white-space: nowrap; font-size: 13px; font-weight: 700; position: relative; z-index: 1; transition: transform .2s, box-shadow .2s; }
.contact-card > a:hover { transform: translateY(-2px); box-shadow: 0 9px 25px rgba(1,252,161,.2); }
footer { color: #c8d3e3; background: #000615; padding: 30px max(28px, calc((100% - 1120px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 25px; font-size: 12px; border-top: 1px solid rgba(255,255,255,.08); }
.footer-brand .brand-logo { width: 105px; height: 56px; }
footer p { color: #718198; }
.library-hero-header { min-height: 475px; }
.library-hero-content { margin-top: 50px; }
.library-hero-content h1 { font-size: clamp(42px, 6vw, 64px); }
.library-content { padding-top: 64px; }
.back-link { color: #c8d6e7; font-size: 13px; font-weight: 600; text-decoration: none; }
.back-link:hover { color: var(--green); }

@media (max-width: 650px) {
  .nav { padding: 14px 20px; }
  .brand-logo { width: 120px; height: 64px; }
  .support-link { display: none; }
  .back-link { font-size: 12px; }
  .hero { min-height: 530px; }
  .hero-content { margin-top: 57px; }
  .hero-copy { font-size: 15px; }
  kbd { display: none; }
  .search-box { height: 62px; }
  .content { padding: 58px 18px 68px; }
  .section-heading { align-items: start; }
  .section-heading h2 { font-size: 29px; }
  .faq-item summary { grid-template-columns: 35px 1fr 26px; gap: 11px; padding: 16px; font-size: 16px; }
  .faq-icon { width: 35px; height: 35px; }
  .answer { margin: 0 16px 18px; padding: 2px 0 4px 14px; font-size: 15px; }
  .app-downloads { grid-template-columns: 1fr; }
  .video-guide { grid-template-columns: 40px 1fr; }
  .video-action { grid-column: 2; }
  .mobile-guide-grid { grid-template-columns: 1fr; }
  .mobile-guide-step p { min-height: 0; }
  .contact-card { padding: 25px; align-items: stretch; flex-direction: column; }
  .contact-card > a { text-align: center; }
  footer { flex-direction: column; text-align: center; }
  footer p { margin: 0; }
}