@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --primary: #254675;
  --primary-hover: #1A5FA8;
  --primary-light: #e8f1fb;
  --accent: #4CAF72;
  --accent-dark: #3a9460;
  --accent-light: #e8f6ed;

  --text-strong: #1A2E4A;
  --text: #374151;
  --text-muted: #4b5563;
  --text-faint: #9ca3af;

  --bg: #F9FAFB;
  --surface: #ffffff;
  --border: #e5e7eb;
  --border-soft: #f1f5f9;

  --danger: #dc2626;
  --warning: #d97706;
  --success: #16a34a;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --container: 1280px;
  --section-pad: clamp(64px, 10vw, 160px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

/* smooth scroll is handled in JS (script.js) with a custom eased duration */

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }
}

a { color: inherit; text-decoration: none; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1.is-visible { transition-delay: 0.08s; }
.reveal-delay-2.is-visible { transition-delay: 0.16s; }
.reveal-delay-3.is-visible { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.is-visible { transition: none; transform: none; opacity: 1; }
}

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: background 0.35s ease, padding 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(249, 250, 251, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  padding: 14px 0;
  border-bottom-color: var(--border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.02em;
  color: var(--text-strong);
}
.nav__logo span {
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent-dark);
  text-transform: uppercase;
}
.nav__links {
  display: flex;
  gap: 40px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-muted);
}
.nav__links a { transition: color 0.2s ease; }
.nav__links a:hover { color: var(--text-strong); }
@media (max-width: 860px) {
  .nav__links { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), background 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -12px rgba(37, 70, 117, 0.55);
}
.btn-ghost {
  background: transparent;
  color: var(--text-strong);
  border-color: var(--border);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn svg { width: 17px; height: 17px; flex-shrink: 0; }

/* ---------- Kicker / eyebrow ---------- */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-light);
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.kicker::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- Browser mockup frame ---------- */
.mockup {
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 0 40px 80px -32px rgba(26, 46, 74, 0.28), 0 8px 24px -12px rgba(26, 46, 74, 0.12);
  overflow: hidden;
}
.mockup__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: #f3f5f8;
  border-bottom: 1px solid var(--border);
}
.mockup__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d8dde3;
}
.mockup__bar-url {
  margin-left: 14px;
  flex: 1;
  max-width: 320px;
  height: 22px;
  border-radius: 6px;
  background: #e7eaee;
}
.mockup img {
  display: block;
  width: 100%;
  height: auto;
}
.mockup--tilt {
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ================= HERO ================= */
.hero {
  padding: 118px 0 calc(var(--section-pad) - 64px);
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  left: 50%;
  width: 1100px;
  height: 700px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, var(--primary-light) 0%, rgba(232,241,251,0) 70%);
  z-index: -1;
  pointer-events: none;
}
.hero__content {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}
.hero h1 {
  font-size: clamp(32px, 4.4vw, 54px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.12;
  color: var(--text-strong);
}
.hero h1 em {
  font-style: normal;
  color: var(--primary);
}
.hero p.lead {
  margin-top: 20px;
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.hero__actions {
  margin-top: 30px;
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero__tags {
  margin-top: 36px;
  display: flex;
  gap: 12px 28px;
  justify-content: center;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: var(--text-faint);
  font-weight: 500;
}
.hero__tags span { position: relative; padding-left: 16px; }
.hero__tags span::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}
.hero__mockup {
  margin: 32px auto 0;
  max-width: 860px;
  padding: 0 8px;
}
.hero__mockup .mockup { border-radius: 16px; }

/* ================= ABOUT ================= */
.about {
  padding: 48px 0 96px;
}
.about__grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 80px;
  align-items: center;
}
.about__grid.reverse { grid-template-columns: 1.15fr 0.85fr; }
.about__grid.reverse .about__text { order: 2; }
.about__text h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  line-height: 1.18;
}
.about__text p {
  margin-top: 22px;
  color: var(--text-muted);
  font-size: 16.5px;
  line-height: 1.75;
}
.about__mockup .mockup { border-radius: var(--radius-md); }
@media (max-width: 900px) {
  .about__grid, .about__grid.reverse { grid-template-columns: 1fr; gap: 40px; }
  .about__grid.reverse .about__text { order: 0; }
}

/* ================= SECTION HEADS ================= */
.section-head {
  max-width: 640px;
  margin: 0 auto 88px;
  text-align: center;
}
.section-head h2 {
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  line-height: 1.15;
}
.section-head p {
  margin-top: 18px;
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ================= BENTO ================= */
.bento { padding: 32px 0 56px; }
.bento .section-head { margin-bottom: 36px; }
.bento__grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 18px;
}

.bento__feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 30px;
  display: flex;
  flex-direction: column;
}
.bento__feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.bento__feature-icon svg { width: 21px; height: 21px; }
.bento__feature h3 {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-strong);
}
.bento__feature p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 320px;
}
.bento__divider {
  margin: 18px 0 16px;
  border-top: 1px solid var(--border-soft);
}
.bento__note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: auto;
}
.bento__note-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.bento__note-icon svg { width: 12px; height: 12px; }
.bento__note span:last-child {
  font-size: 13px;
  color: var(--text);
  line-height: 1.5;
}

.bento__stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.bento__row {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
}
.bento__row:hover {
  transform: translateY(-3px);
  border-color: #cdd8e6;
}
.bento__row-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.bento__row-icon svg { width: 18px; height: 18px; }
.bento__row .num {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-strong);
  letter-spacing: -0.01em;
}
.bento__row .label {
  margin-top: 2px;
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.4;
  font-weight: 500;
}

@media (max-width: 760px) {
  .bento__grid { grid-template-columns: 1fr; }
}

/* ================= FEATURES ================= */
.features { padding: 48px 0 96px; }
.features .section-head { margin-bottom: 48px; }
.feature {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 72px;
  align-items: center;
  min-height: 0;
  padding: 36px 0;
}
.feature:not(:last-child) { border-bottom: 1px solid var(--border-soft); }
.feature.reverse { grid-template-columns: 1.1fr 0.9fr; }
.feature.reverse .feature__text { order: 2; }
.feature__index {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  margin-bottom: 18px;
}
.feature__text h3 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  line-height: 1.2;
}
.feature__text p {
  margin-top: 18px;
  font-size: 16.5px;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 460px;
}
.feature__list {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.feature__list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
}
.feature__list svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--accent-dark);
  margin-top: 1px;
}
.feature__mockup .mockup {
  border-radius: var(--radius-md);
}
@media (max-width: 960px) {
  .feature, .feature.reverse {
    grid-template-columns: 1fr;
    gap: 36px;
    min-height: 0;
    padding: 40px 0;
  }
  .feature.reverse .feature__text { order: 0; }
}

/* ================= HOW IT WORKS ================= */
.how { padding: 48px 0 96px; background: var(--surface); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.how__flow {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 980px;
  margin: 0 auto;
}
.how__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 220px;
}
.how__step-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}
.how__step-icon svg { width: 26px; height: 26px; }
.how__step:hover .how__step-icon {
  background: var(--primary);
  color: #fff;
  transform: translateY(-4px);
}
.how__step h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-strong);
}
.how__step p {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.55;
}
.how__connector {
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(to right, var(--border) 0, var(--border) 6px, transparent 6px, transparent 12px);
  margin-top: 32px;
  min-width: 24px;
}
@media (max-width: 760px) {
  .how__flow { flex-direction: column; align-items: center; gap: 36px; }
  .how__connector { width: 1px; height: 36px; margin: 0; background: repeating-linear-gradient(to bottom, var(--border) 0, var(--border) 6px, transparent 6px, transparent 12px); }
  .how__step { width: 100%; max-width: 280px; }
}

/* ================= SECURITY ================= */
.security { padding: 36px 0 64px; }
.security__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 148px;
  gap: 16px;
}
.security__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
}
.security__card:hover {
  transform: translateY(-4px);
  border-color: #cdd8e6;
}
.security__card--lg { grid-column: span 2; grid-row: span 2; }
.security__card--tall { grid-row: span 2; }
.security__card--wide { grid-column: span 2; }
.security__icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}
.security__icon svg { width: 19px; height: 19px; }
.security__card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-strong);
}
.security__card p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
}
.security__card--lg .security__icon,
.security__card--tall .security__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  margin-bottom: 16px;
}
.security__card--lg .security__icon svg,
.security__card--tall .security__icon svg { width: 21px; height: 21px; }
.security__card--lg h4 { font-size: 19px; }
.security__card--lg p { font-size: 14.5px; max-width: 340px; }
.security__card--wide p { max-width: 480px; }

@media (max-width: 900px) {
  .security__grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 168px; }
  .security__card--lg { grid-column: span 2; grid-row: span 1; }
  .security__card--tall { grid-column: span 2; grid-row: span 1; }
  .security__card--wide { grid-column: span 2; }
}
@media (max-width: 600px) {
  .security__grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
  .security__card--lg,
  .security__card--tall,
  .security__card--wide { grid-column: span 1; grid-row: span 1; }
}

/* ================= ADVANTAGES ================= */
.advantages { padding: 48px 0 96px; background: var(--text-strong); color: #fff; }
.advantages .section-head h2 { color: #fff; }
.advantages .section-head p { color: rgba(255,255,255,0.62); }
.advantages__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.advantage__card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 40px;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background 0.3s ease;
}
.advantage__card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.07);
}
.advantage__num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
}
.advantage__card h4 {
  margin-top: 16px;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.advantage__card p {
  margin-top: 12px;
  font-size: 15px;
  color: rgba(255,255,255,0.64);
  line-height: 1.7;
}
@media (max-width: 760px) {
  .advantages__grid { grid-template-columns: 1fr; }
}

/* ================= FINAL CTA ================= */
.final { padding: 48px 0 72px; text-align: center; }
.final h2 {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.18;
}
.final p.lead {
  margin: 22px auto 0;
  max-width: 560px;
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.65;
}
.final__actions {
  margin-top: 36px;
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.final__mockup {
  margin: 72px auto 0;
  max-width: 1080px;
  padding: 0 8px;
}
.final__mockup .mockup { border-radius: 20px; }

/* ================= FOOTER ================= */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: var(--text-faint);
}
.footer__logo {
  font-weight: 700;
  color: var(--text-muted);
}

/* dark mode: keep light presentation regardless of system theme for brand consistency */