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

:root {
  --bg: #f7f6f0;
  --ink: #151711;
  --muted: #5f665d;
  --paper: #ffffff;
  --line: #deded2;
  --dark: #101310;
  --green: #2f7d5a;
  --mint: #dff4e9;
  --amber: #f2bf4f;
  --coral: #ef876f;
  --blue: #dfeef3;
  --shadow: 0 18px 48px rgba(18, 22, 18, 0.1);
  --soft-shadow: 0 10px 26px rgba(18, 22, 18, 0.07);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Manrope", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px clamp(18px, 4vw, 56px);
  background: rgba(247, 246, 240, 0.94);
  border-bottom: 1px solid rgba(21, 23, 17, 0.08);
  box-shadow: 0 8px 22px rgba(18, 22, 18, 0.04);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 18px rgba(242, 191, 79, 0.75);
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: #394238;
  font-size: 15px;
  font-weight: 700;
}

.nav a {
  padding: 8px 12px;
  border-radius: 8px;
  color: #3e483c;
  text-decoration: none;
}

.nav a:hover {
  background: rgba(47, 125, 90, 0.1);
  color: var(--green);
}

main {
  overflow: hidden;
}

.hero {
  position: relative;
  min-height: clamp(520px, 68svh, 680px);
  display: flex;
  align-items: center;
  padding: clamp(46px, 6vw, 78px) clamp(18px, 5vw, 72px);
  color: #ffffff;
  background: #101310;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: url("assets/ledbox-hero.svg");
  background-position: right 7% center;
  background-repeat: no-repeat;
  background-size: min(680px, 52vw);
  opacity: 0.86;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(16, 19, 16, 0.98) 0%, rgba(16, 19, 16, 0.86) 43%, rgba(16, 19, 16, 0.34) 100%),
    linear-gradient(180deg, rgba(16, 19, 16, 0.05) 0%, rgba(16, 19, 16, 0.42) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(720px, 100%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--amber);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.address {
  overflow-wrap: anywhere;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(42px, 6.4vw, 80px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 3.7vw, 46px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: 0;
}

.lead {
  max-width: 650px;
  margin-bottom: 22px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(19px, 1.8vw, 24px);
}

.hero-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 700px;
  margin-bottom: 24px;
}

.hero-steps div {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  min-height: 78px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.hero-steps span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--amber);
  color: #17140b;
  font-size: 15px;
  font-weight: 800;
}

.hero-steps p {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
}

.hero-actions,
.finish {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 14px 22px;
  border-radius: 8px;
  font-size: 17px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.primary-action {
  background: var(--amber);
  color: #17140b;
  box-shadow: 0 16px 32px rgba(242, 191, 79, 0.26);
}

.primary-action:hover {
  transform: translateY(-1px);
  background: #ffd36a;
}

.secondary-action {
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
}

.secondary-action:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.48);
}

.connect-panel,
.notice,
.section,
.finish {
  width: min(1120px, calc(100% - 32px));
  margin-right: auto;
  margin-left: auto;
}

.connect-panel {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: -30px;
  margin-bottom: 50px;
  position: relative;
  z-index: 3;
}

.connect-card {
  min-height: 110px;
  padding: 20px;
  border: 1px solid rgba(222, 222, 210, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--soft-shadow);
}

.connect-card span {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.connect-card strong {
  display: block;
  color: var(--ink);
  font-size: clamp(20px, 2vw, 25px);
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.notice {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 28px;
  padding: 18px 20px;
  border: 1px solid rgba(239, 135, 111, 0.28);
  border-radius: 8px;
  background: #fff2ec;
}

.notice strong {
  flex: 0 0 auto;
  color: #8a321f;
  font-size: 17px;
}

.notice p {
  margin: 0;
  color: #68463c;
  font-size: 16px;
}

.section {
  padding: 70px 0;
}

.section-tint {
  width: 100%;
  max-width: none;
  padding-right: max(16px, calc((100% - 1120px) / 2));
  padding-left: max(16px, calc((100% - 1120px) / 2));
  background: var(--blue);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 21px;
}

.steps,
.settings-grid,
.case-list,
.capabilities-grid {
  display: grid;
  gap: 14px;
}

.steps {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.step,
.settings-grid article,
.case-card,
.capabilities-grid article {
  min-height: 100%;
  padding: 24px;
  border: 1px solid rgba(21, 23, 17, 0.08);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--soft-shadow);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--green);
  color: #ffffff;
  font-size: 18px;
  font-weight: 800;
}

.step p,
.settings-grid p,
.case-card p,
.capabilities-grid p,
.help-list p,
.finish p,
.save-note p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 17px;
}

.capabilities-section {
  padding-top: 48px;
}

.capabilities-grid {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.capabilities-grid article {
  background: var(--paper);
  color: var(--ink);
}

.capabilities-grid article:nth-child(2) {
  background: #f3fbf6;
}

.capabilities-grid article:nth-child(3) {
  background: #fff8e5;
}

.capabilities-grid article:nth-child(4) {
  background: #eef8fb;
}

.capabilities-grid article:nth-child(5) {
  background: #fff4ef;
}

.capability-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
  border-radius: 50%;
  background: var(--amber);
  color: #17140b;
  font-size: 14px;
  font-weight: 800;
}

.capabilities-grid p {
  color: var(--muted);
}

.interface-section {
  padding-top: 44px;
}

.interface-layout {
  display: grid;
  grid-template-columns: minmax(310px, 0.88fr) minmax(0, 1.12fr);
  gap: 28px;
  align-items: center;
}

.phone-preview {
  max-width: 430px;
  margin: 0 auto;
  overflow: hidden;
  border: 10px solid #151711;
  border-radius: 28px;
  background: #202020;
  box-shadow: 0 28px 70px rgba(18, 22, 18, 0.22);
}

.phone-top {
  padding: 15px 18px;
  color: #ffffff;
  background: #141414;
  text-align: center;
  font-weight: 800;
}

.phone-screen {
  display: grid;
  gap: 12px;
  padding: 16px;
  background: radial-gradient(circle at top, #404040 0%, #2b2b2b 36%, #1f1f1f 100%);
}

.ui-block {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  background: linear-gradient(180deg, #3b3b3b 0%, #313131 100%);
}

.ui-block.compact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: #f3f3f3;
  font-size: 14px;
  font-weight: 700;
}

.ui-block.compact b {
  color: #8df195;
}

.ui-title,
.ui-color,
.ui-range {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.ui-title {
  margin-bottom: 12px;
  color: #f3f3f3;
  font-size: 14px;
  font-weight: 800;
}

.ui-title b {
  min-width: 64px;
  padding: 4px 8px;
  border: 1px solid rgba(76, 175, 80, 0.35);
  border-radius: 999px;
  color: #8df195;
  background: rgba(76, 175, 80, 0.16);
  text-align: center;
  font-size: 12px;
}

.fake-slider {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #5a5a5a;
}

.fake-slider span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: #4caf50;
}

.ui-range {
  margin-top: 8px;
  color: #bdbdbd;
  font-size: 12px;
}

.ui-color {
  margin-top: 12px;
  color: #f3f3f3;
  font-size: 14px;
  font-weight: 800;
}

.ui-color i {
  width: 48px;
  height: 30px;
  border-radius: 8px;
  background: #00ff00;
}

.mock-save,
.mock-secondary {
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  color: #ffffff;
  font-weight: 800;
}

.mock-save {
  background: linear-gradient(180deg, #58c45d 0%, #3fa845 100%);
}

.mock-secondary {
  background: #444444;
}

.interface-guide {
  display: grid;
  gap: 14px;
}

.interface-guide article {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  padding: 22px;
  border: 1px solid rgba(21, 23, 17, 0.08);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 14px 34px rgba(18, 22, 18, 0.07);
}

.interface-guide article > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--green);
  color: #ffffff;
  font-weight: 800;
}

.interface-guide p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.settings-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.settings-grid article:nth-child(2) {
  background: #fff5da;
}

.settings-grid article:nth-child(5) {
  background: #f8e5df;
}

.save-note {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 16px;
  padding: 18px 20px;
  border-radius: 8px;
  background: #101310;
}

.save-note span {
  flex: 0 0 auto;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--amber);
  color: #17140b;
  font-weight: 800;
}

.save-note p {
  color: rgba(255, 255, 255, 0.82);
}

.case-list {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.case-card {
  background: #fbfbf7;
}

.case-card:nth-child(1) {
  border-top: 4px solid var(--amber);
}

.case-card:nth-child(2) {
  border-top: 4px solid var(--green);
}

.case-card:nth-child(3) {
  border-top: 4px solid var(--coral);
}

.case-card:nth-child(4) {
  border-top: 4px solid #5a9fbc;
}

.help-section {
  padding-top: 34px;
}

.help-list {
  display: grid;
  gap: 12px;
  max-width: 900px;
}

details {
  border: 1px solid rgba(21, 23, 17, 0.08);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 10px 24px rgba(18, 22, 18, 0.06);
}

summary {
  cursor: pointer;
  padding: 20px 22px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
}

details p {
  padding: 0 22px 22px;
}

.finish {
  justify-content: space-between;
  margin-top: 20px;
  margin-bottom: 60px;
  padding: 30px;
  border-radius: 8px;
  background: var(--dark);
  color: #ffffff;
  box-shadow: var(--shadow);
}

.finish div {
  max-width: 720px;
}

.finish h2 {
  margin-bottom: 10px;
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.2;
}

.finish .primary-action {
  background: var(--mint);
  color: #153326;
  box-shadow: none;
}

@media (max-width: 960px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .nav {
    width: 100%;
    flex-wrap: wrap;
    overflow-x: visible;
    padding-bottom: 2px;
  }

  .hero::before {
    background-position: right -160px center;
    background-size: 690px;
    opacity: 0.55;
  }

  .hero::after {
    background: linear-gradient(90deg, rgba(16, 19, 16, 0.94) 0%, rgba(16, 19, 16, 0.72) 100%);
  }

  .hero-steps {
    grid-template-columns: 1fr;
    max-width: 620px;
  }

  .connect-panel,
  .steps,
  .settings-grid,
  .capabilities-grid,
  .case-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .interface-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .topbar {
    position: static;
    padding: 12px;
  }

  .nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    font-size: 13px;
    line-height: 1.1;
  }

  .nav a {
    padding: 7px 8px;
    background: rgba(47, 125, 90, 0.07);
    text-align: center;
  }

  .hero-inner,
  .section-heading,
  .notice p,
  .finish div {
    min-width: 0;
    max-width: 100%;
  }

  .hero {
    min-height: auto;
    padding: 42px 16px 72px;
  }

  .hero::before {
    background-position: right -210px center;
    background-size: 610px;
  }

  h1 {
    margin-bottom: 16px;
    font-size: clamp(44px, 13vw, 56px);
    line-height: 1.02;
  }

  h2 {
    font-size: clamp(28px, 9vw, 34px);
    line-height: 1.08;
  }

  h3 {
    font-size: 21px;
  }

  .lead,
  .section-heading p:not(.eyebrow) {
    font-size: 18px;
    line-height: 1.45;
  }

  .hero-steps {
    gap: 8px;
  }

  .hero-steps div {
    min-height: 0;
    padding: 12px;
  }

  .primary-action,
  .secondary-action,
  .mock-save,
  .mock-secondary {
    min-height: 50px;
    padding-right: 14px;
    padding-left: 14px;
    text-align: center;
    line-height: 1.2;
  }

  .primary-action,
  .secondary-action {
    width: 100%;
  }

  .connect-panel,
  .steps,
  .settings-grid,
  .capabilities-grid,
  .case-list {
    grid-template-columns: 1fr;
  }

  .connect-panel,
  .notice,
  .section,
  .finish {
    width: min(100% - 20px, 1120px);
  }

  .connect-panel {
    margin-top: -32px;
    margin-bottom: 34px;
  }

  .connect-card,
  .step,
  .settings-grid article,
  .case-card,
  .capabilities-grid article,
  .interface-guide article {
    padding: 20px;
  }

  .section {
    padding: 52px 0;
  }

  .section-tint {
    padding-right: 12px;
    padding-left: 12px;
  }

  .save-note {
    align-items: flex-start;
    flex-direction: column;
  }

  .notice {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .phone-preview {
    max-width: 100%;
    border-width: 7px;
    border-radius: 22px;
  }

  .phone-top {
    padding: 13px 12px;
    font-size: 14px;
  }

  .phone-screen {
    gap: 10px;
    padding: 12px;
  }

  .ui-block {
    padding: 12px;
  }

  .ui-title,
  .ui-block.compact {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .ui-title b {
    min-width: 0;
  }

  .interface-guide article {
    grid-template-columns: 1fr;
  }

  .finish {
    padding: 24px;
  }
}

@media (max-width: 380px) {
  .nav {
    font-size: 12px;
  }

  .nav a {
    padding: 7px;
  }

  h1 {
    font-size: clamp(40px, 12vw, 48px);
  }

  .lead,
  .section-heading p:not(.eyebrow),
  .step p,
  .settings-grid p,
  .case-card p,
  .capabilities-grid p,
  .help-list p,
  .finish p,
  .save-note p {
    font-size: 16px;
  }

  summary {
    font-size: 17px;
  }
}

@media print {
  .topbar,
  .hero-actions,
  .finish .primary-action {
    display: none;
  }

  body {
    background: #ffffff;
  }

  .hero,
  .finish,
  .save-note {
    color: #000000;
    background: #ffffff;
  }

  .hero::before,
  .hero::after {
    display: none;
  }

  .connect-card,
  .step,
  .settings-grid article,
  .case-card,
  details,
  .finish {
    box-shadow: none;
  }
}