:root {
  --ink: #10213f;
  --ink-soft: #53657f;
  --blue: #1f73e8;
  --blue-dark: #1458c4;
  --blue-soft: #eaf4ff;
  --teal: #16a89a;
  --orange: #ffac2f;
  --cream: #fff9ec;
  --line: #dce8f5;
  --surface: #ffffff;
  --shadow: 0 28px 80px rgba(31, 91, 162, 0.13);
  --content: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #f9fcff;
  color: var(--ink);
  font-family: "Avenir Next", "SF Pro Display", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

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

.site-header {
  position: absolute;
  z-index: 100;
  top: 18px;
  left: 50%;
  display: flex;
  width: min(calc(100% - 40px), 1180px);
  height: 72px;
  align-items: center;
  padding: 0 14px 0 18px;
  border: 1px solid rgba(207, 223, 240, 0.78);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 14px 42px rgba(31, 72, 122, 0.1);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 11px;
}

.brand img {
  width: 43px;
  height: 43px;
  border-radius: 13px;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.brand-copy strong {
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.brand-copy small {
  color: #75869d;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.28em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin: 0 auto;
  color: #485a73;
  font-size: 14px;
  font-weight: 700;
}

.desktop-nav a {
  position: relative;
  padding: 12px 0;
}

.desktop-nav a::after {
  position: absolute;
  bottom: 6px;
  left: 0;
  width: 0;
  height: 2px;
  border-radius: 9px;
  background: var(--blue);
  content: "";
  transition: width 180ms ease;
}

.desktop-nav a:hover::after {
  width: 100%;
}

.header-cta {
  display: inline-flex;
  height: 46px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 18px;
  border-radius: 14px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  transition: transform 160ms ease, background 160ms ease;
}

.header-cta:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
}

.mobile-menu {
  display: none;
}

.hero {
  position: relative;
  display: grid;
  min-height: 820px;
  grid-template-columns: minmax(0, 0.92fr) minmax(520px, 1.08fr);
  gap: 70px;
  align-items: center;
  overflow: hidden;
  padding: 146px max(40px, calc((100vw - var(--content)) / 2)) 84px;
  background:
    radial-gradient(circle at 12% 10%, rgba(255, 191, 66, 0.2), transparent 24%),
    radial-gradient(circle at 83% 28%, rgba(45, 144, 255, 0.19), transparent 31%),
    linear-gradient(180deg, #fafdff 0%, #f3f9ff 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.42;
  background-image:
    linear-gradient(rgba(41, 105, 175, 0.065) 1px, transparent 1px),
    linear-gradient(90deg, rgba(41, 105, 175, 0.065) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 88%);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
}

.hero-orb-one {
  top: 160px;
  right: 7vw;
  width: 84px;
  height: 84px;
  border: 18px solid rgba(255, 172, 47, 0.35);
}

.hero-orb-two {
  bottom: 110px;
  left: 45%;
  width: 23px;
  height: 23px;
  background: rgba(22, 168, 154, 0.46);
}

.hero-copy,
.product-scene {
  position: relative;
  z-index: 2;
}

.hero-copy {
  animation: rise-in 650ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.eyebrow,
.section-kicker {
  margin: 0;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  border: 1px solid #c9e0fb;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
}

.eyebrow span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(255, 172, 47, 0.16);
}

.hero h1 {
  max-width: 620px;
  margin: 26px 0 24px;
  color: #0b1d3a;
  font-size: clamp(48px, 5vw, 72px);
  font-weight: 950;
  letter-spacing: -0.055em;
  line-height: 1.12;
}

.hero h1 em {
  position: relative;
  display: inline-block;
  color: var(--blue);
  font-style: normal;
}

.hero h1 em::after {
  position: absolute;
  right: 0;
  bottom: -6px;
  left: 0;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 178, 48, 0.56);
  content: "";
  transform: rotate(-2deg) scaleY(0.42);
}

.hero-description {
  max-width: 570px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-width: 158px;
  height: 54px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 22px;
  border-radius: 16px;
  font-size: 14px;
  font-weight: 900;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:hover {
  transform: translateY(-3px);
}

.button-primary {
  background: linear-gradient(135deg, #2d85f3, #145dcc);
  box-shadow: 0 16px 30px rgba(31, 115, 232, 0.25);
  color: #fff;
}

.button-secondary {
  border: 1px solid #cbdcec;
  background: rgba(255, 255, 255, 0.8);
  color: var(--ink);
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 22px;
  color: #71839a;
  font-size: 12px;
  font-weight: 650;
}

.wechat-mark {
  display: inline-flex;
  width: 20px;
  height: 20px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #e3f8ee;
  color: #15945f;
  font-size: 11px;
  font-weight: 900;
}

.product-scene {
  min-height: 600px;
  animation: rise-in 700ms 120ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.scene-halo {
  position: absolute;
  top: 40px;
  left: 50%;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 45% 42%, rgba(255, 255, 255, 0.94), rgba(211, 234, 255, 0.82) 58%, rgba(211, 234, 255, 0) 72%);
  transform: translateX(-50%);
}

.phone-shell {
  position: absolute;
  z-index: 3;
  top: 0;
  left: 50%;
  width: 350px;
  min-height: 676px;
  overflow: hidden;
  padding: 18px 19px 22px;
  border: 9px solid #fff;
  border-radius: 42px;
  background: #f5f9fe;
  box-shadow:
    0 44px 90px rgba(25, 77, 135, 0.23),
    0 0 0 1px rgba(30, 95, 166, 0.12);
  transform: translateX(-50%) rotate(1.1deg);
}

.phone-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 9px 10px;
  color: #203a5c;
  font-size: 10px;
  font-weight: 900;
}

.phone-status {
  letter-spacing: 2px;
}

.app-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 5px 16px;
}

.app-head div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.app-head small {
  color: #7a8ba2;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.app-head strong {
  color: #12284a;
  font-size: 18px;
  font-weight: 950;
}

.app-head img {
  width: 40px;
  height: 40px;
  border-radius: 13px;
}

.plan-card,
.word-preview {
  border: 1px solid #d9e8f6;
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(38, 91, 148, 0.08);
}

.plan-card {
  padding: 17px;
}

.plan-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.plan-heading > div {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.plan-heading span {
  font-size: 15px;
  font-weight: 950;
}

.plan-heading small {
  color: #7f8fa4;
  font-size: 9px;
  font-weight: 700;
}

.plan-heading strong {
  color: var(--blue);
  font-size: 16px;
  font-weight: 950;
}

.progress-track {
  height: 7px;
  overflow: hidden;
  margin: 13px 0 12px;
  border-radius: 999px;
  background: #eaf0f7;
}

.progress-track span {
  position: relative;
  display: block;
  width: 75%;
  height: 100%;
  overflow: hidden;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), #4ea1ff, var(--teal));
}

.progress-track span::after,
.team-progress span::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.72) 50%, transparent 100%);
  content: "";
  transform: translateX(-120%);
  animation: progress-shimmer 2.8s ease-in-out infinite;
  will-change: transform;
}

.plan-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.plan-card li {
  display: grid;
  grid-template-columns: 27px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 9px 0;
  border-top: 1px solid #edf3f9;
}

.plan-card li i {
  display: inline-flex;
  width: 27px;
  height: 27px;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  background: #edf4fb;
  color: #6a7d94;
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
}

.plan-card li.is-done i {
  background: #def7ef;
  color: #0d947d;
}

.plan-card li > span {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 2px;
}

.plan-card li b {
  color: #273a55;
  font-size: 10px;
  font-weight: 850;
}

.plan-card li small {
  color: #8997aa;
  font-size: 8px;
}

.plan-card li em {
  color: #20a78c;
  font-size: 8px;
  font-style: normal;
  font-weight: 850;
}

.plan-card li .go-label {
  padding: 5px 8px;
  border-radius: 8px;
  background: #eaf3ff;
  color: var(--blue);
}

.word-preview {
  margin-top: 13px;
  padding: 15px 17px 13px;
}

.word-preview-top {
  display: flex;
  justify-content: space-between;
  color: #7a8ba2;
  font-size: 9px;
  font-weight: 800;
}

.word-preview > strong {
  display: inline-block;
  margin-top: 10px;
  color: #153b72;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 25px;
}

.phonetic {
  margin-left: 8px;
  color: #6f8298;
  font-size: 9px;
}

.word-preview > p {
  margin: 5px 0 10px;
  color: #566a83;
  font-size: 10px;
}

.word-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
}

.word-actions span {
  padding: 7px 3px;
  border: 1px solid #d9e6f3;
  border-radius: 8px;
  color: #536a84;
  font-size: 8px;
  font-weight: 800;
  text-align: center;
}

.word-actions .is-primary {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}

.floating-card {
  position: absolute;
  z-index: 5;
  display: flex;
  align-items: center;
  border: 1px solid rgba(208, 225, 243, 0.94);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 46px rgba(27, 79, 138, 0.15);
  backdrop-filter: blur(12px);
}

.floating-card p {
  display: flex;
  margin: 0;
  flex-direction: column;
  gap: 3px;
}

.floating-card p strong {
  color: #203853;
  font-size: 12px;
  font-weight: 900;
}

.floating-card p small {
  color: #8090a4;
  font-size: 8px;
  font-weight: 700;
}

.floating-streak {
  top: 112px;
  right: -4px;
  gap: 10px;
  padding: 13px 15px 13px 12px;
  border-radius: 18px;
  transform: rotate(3deg);
}

.floating-icon {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border-radius: 13px;
  background: #fff2d9;
  color: #ef9220;
  font-family: Georgia, serif;
  font-size: 20px;
  font-weight: 900;
}

.floating-streak > b {
  align-self: flex-end;
  color: #ef9220;
  font-size: 8px;
}

.floating-grammar {
  bottom: 88px;
  left: -30px;
  gap: 11px;
  padding: 13px 18px 13px 12px;
  border-radius: 18px;
  transform: rotate(-3deg);
}

.grammar-shape {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border-radius: 13px;
  background: #e8f0ff;
  color: #3b66dc;
  font-family: Georgia, serif;
  font-size: 18px;
  font-weight: 900;
}

.stats-strip {
  display: grid;
  max-width: var(--content);
  grid-template-columns: repeat(4, 1fr);
  margin: 0 auto;
  padding: 34px 10px;
  border-bottom: 1px solid var(--line);
}

.stats-strip > div {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
  border-right: 1px solid var(--line);
}

.stats-strip > div:last-child {
  border-right: 0;
}

.stats-strip strong {
  color: var(--blue);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 30px;
  font-weight: 900;
}

.stats-strip span {
  color: #64758b;
  font-size: 12px;
  font-weight: 800;
}

.section {
  max-width: var(--content);
  margin: 0 auto;
  padding: 122px 0;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 0.68fr;
  gap: 100px;
  align-items: end;
  margin-bottom: 52px;
}

.section-heading h2,
.method-heading h2,
.together-copy h2,
.start-copy h2 {
  margin: 13px 0 0;
  color: #0c2040;
  font-size: clamp(38px, 4vw, 56px);
  font-weight: 950;
  letter-spacing: -0.045em;
  line-height: 1.17;
}

.section-heading > p,
.method-heading > p,
.together-copy > p,
.start-copy > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
}

.features-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  grid-template-rows: repeat(2, minmax(360px, auto));
  gap: 22px;
}

.feature-main,
.feature-side {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 32px;
}

.feature-main {
  grid-row: 1 / 3;
  min-height: 742px;
  padding: 42px;
  background:
    radial-gradient(circle at 90% 92%, rgba(28, 130, 242, 0.22), transparent 33%),
    linear-gradient(160deg, #eaf5ff 0%, #f9fcff 56%, #eef9f7 100%);
}

.feature-label {
  display: inline-flex;
  padding: 7px 10px;
  border: 1px solid rgba(41, 109, 185, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--blue);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.13em;
}

.feature-main h3,
.feature-side h3 {
  margin: 24px 0 14px;
  color: #102542;
  font-size: 38px;
  font-weight: 950;
  letter-spacing: -0.04em;
  line-height: 1.2;
}

.feature-main > p,
.feature-side > p {
  max-width: 470px;
  margin: 0;
  color: #5a6e87;
  font-size: 14px;
  line-height: 1.8;
}

.book-cloud {
  position: relative;
  height: 330px;
  margin-top: 28px;
  border: 1px solid rgba(176, 209, 238, 0.58);
  border-radius: 28px;
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.94), rgba(229, 242, 255, 0.6)),
    repeating-radial-gradient(circle, transparent 0 34px, rgba(74, 136, 201, 0.08) 35px 36px);
}

.book-chip {
  position: absolute;
  display: inline-flex;
  min-width: 82px;
  height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 15px;
  border: 1px solid #d5e5f5;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 12px 24px rgba(39, 93, 151, 0.1);
  color: #244565;
  font-size: 12px;
  font-weight: 900;
}

.chip-1 { top: 52px; left: 48px; transform: rotate(-4deg); }
.chip-2 { top: 35px; right: 55px; transform: rotate(3deg); }
.chip-3 { top: 125px; left: 37%; color: #fff; background: var(--blue); transform: rotate(2deg); }
.chip-4 { top: 168px; left: 54px; transform: rotate(3deg); }
.chip-5 { top: 194px; right: 48px; transform: rotate(-3deg); }
.chip-6 { bottom: 33px; left: 38%; transform: rotate(1deg); }
.chip-7 { top: 105px; right: 17px; }
.chip-8 { bottom: 28px; left: 18px; }

.feature-main-foot {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-top: 24px;
}

.feature-main-foot > span {
  padding: 8px 12px;
  border-radius: 999px;
  background: #fff;
  color: #58708b;
  font-size: 10px;
  font-weight: 850;
}

.feature-main-foot strong {
  display: flex;
  flex-direction: column;
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: 30px;
  text-align: right;
}

.feature-main-foot small {
  color: #77889c;
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-size: 9px;
  font-weight: 800;
}

.feature-side {
  padding: 32px;
  background: #fff;
}

.feature-side h3 {
  margin-top: 20px;
  font-size: 28px;
}

.feature-side-grammar {
  background: linear-gradient(145deg, #fffaf0, #fff 72%);
}

.grammar-demo {
  margin-top: 20px;
  padding: 17px;
  border: 1px solid #f0dfbd;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 12px 28px rgba(173, 117, 32, 0.07);
}

.grammar-demo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.grammar-demo-head span {
  font-size: 14px;
  font-weight: 950;
}

.grammar-demo-head small {
  padding: 5px 8px;
  border-radius: 999px;
  background: #fff1d4;
  color: #bd781b;
  font-size: 8px;
  font-weight: 900;
}

.grammar-rule {
  display: flex;
  gap: 10px;
  margin-top: 13px;
  padding: 11px;
  border-radius: 12px;
  background: #f7f9fc;
}

.grammar-rule i {
  flex: 0 0 auto;
  width: 4px;
  border-radius: 999px;
  background: var(--orange);
}

.grammar-rule p,
.grammar-example {
  margin: 0;
  color: #607086;
  font-size: 9px;
  line-height: 1.6;
}

.grammar-example {
  display: flex;
  margin-top: 11px;
  flex-direction: column;
  gap: 3px;
}

.grammar-example span {
  color: #253b59;
  font-family: Georgia, serif;
  font-size: 11px;
}

.grammar-example b {
  color: var(--blue);
}

.feature-side-review {
  background: linear-gradient(145deg, #effaf8, #fff 72%);
}

.review-stack {
  position: relative;
  height: 142px;
  margin-top: 18px;
}

.review-card {
  position: absolute;
  right: 8px;
  left: 8px;
  border: 1px solid #cfe6e2;
  border-radius: 17px;
  background: #fff;
  box-shadow: 0 10px 25px rgba(31, 113, 101, 0.08);
}

.review-card-back,
.review-card-middle {
  height: 84px;
  padding: 15px 20px;
  color: #b0c0c0;
  font-family: Georgia, serif;
  font-size: 17px;
}

.review-card-back {
  top: 0;
  transform: scale(0.9);
}

.review-card-middle {
  top: 14px;
  transform: scale(0.95);
}

.review-card-front {
  top: 27px;
  display: grid;
  min-height: 112px;
  grid-template-columns: 1fr auto;
  padding: 15px 18px;
}

.review-card-front small {
  color: #78908d;
  font-size: 8px;
  font-weight: 800;
}

.review-card-front strong {
  grid-column: 1 / 2;
  color: #1f4f4a;
  font-family: Georgia, serif;
  font-size: 21px;
}

.review-card-front > span {
  grid-column: 1 / 2;
  color: #5b726f;
  font-size: 9px;
}

.review-card-front div {
  display: flex;
  grid-column: 2 / 3;
  grid-row: 1 / 4;
  align-items: center;
  gap: 6px;
  color: #d27d27;
  font-size: 8px;
  font-weight: 800;
}

.review-card-front div i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

.method-section {
  position: relative;
  overflow: hidden;
  padding: 118px max(40px, calc((100vw - var(--content)) / 2));
  background:
    radial-gradient(circle at 86% 18%, rgba(45, 140, 255, 0.21), transparent 29%),
    linear-gradient(145deg, #0d2242 0%, #102b51 58%, #0f3e5f 100%);
  color: #fff;
}

.method-orb {
  position: absolute;
  right: 8%;
  bottom: -160px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  box-shadow:
    0 0 0 54px rgba(255, 255, 255, 0.025),
    0 0 0 108px rgba(255, 255, 255, 0.018);
}

.method-heading {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 0.7fr;
  gap: 90px;
  align-items: end;
}

.method-heading .section-kicker {
  grid-column: 1 / -1;
  color: #64cfc2;
}

.method-heading h2 {
  margin-top: 0;
  color: #fff;
}

.method-heading > p {
  color: #b7c7da;
}

.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 66px;
}

.step-card {
  min-height: 265px;
  padding: 24px;
  border: 1px solid rgba(181, 213, 242, 0.17);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.065);
  backdrop-filter: blur(8px);
  transition: transform 180ms ease, background 180ms ease;
}

.step-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-6px);
}

.step-number {
  color: #6d8dae;
  font-family: Georgia, serif;
  font-size: 13px;
  font-weight: 900;
}

.step-line {
  display: flex;
  align-items: center;
  margin: 24px 0 28px;
}

.step-line span {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  border: 3px solid #8ee1d6;
  border-radius: 50%;
  background: #153356;
  box-shadow: 0 0 0 6px rgba(100, 207, 194, 0.12);
}

.step-line i {
  position: absolute;
  left: 50px;
  width: calc(100% + 6px);
  height: 1px;
  background: linear-gradient(90deg, rgba(142, 225, 214, 0.6), rgba(142, 225, 214, 0.06));
}

.step-card h3 {
  margin: 0;
  color: #fff;
  font-size: 20px;
  font-weight: 900;
}

.step-card p {
  margin: 12px 0 0;
  color: #aec0d4;
  font-size: 13px;
  line-height: 1.75;
}

.compact-heading {
  margin-bottom: 46px;
}

.toolkit-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.feature-card {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: #fff;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.feature-card:hover {
  box-shadow: 0 24px 55px rgba(29, 83, 145, 0.11);
  transform: translateY(-7px);
}

.feature-card > span {
  color: #8ba0b6;
  font-family: Georgia, serif;
  font-size: 11px;
  font-weight: 900;
}

.tool-icon {
  position: relative;
  width: 76px;
  height: 76px;
  margin: 32px 0;
  border-radius: 22px;
}

.tool-icon i,
.tool-icon b {
  position: absolute;
  display: block;
}

.tool-icon-a {
  background: #eaf4ff;
}

.tool-icon-a i {
  top: 20px;
  left: 20px;
  width: 36px;
  height: 34px;
  border: 4px solid var(--blue);
  border-radius: 4px 12px 12px 4px;
}

.tool-icon-a b {
  top: 27px;
  left: 27px;
  width: 18px;
  height: 3px;
  border-radius: 9px;
  background: var(--blue);
  box-shadow: 0 9px 0 var(--blue);
}

.tool-icon-b {
  background: #fff3dd;
}

.tool-icon-b i {
  top: 17px;
  left: 21px;
  width: 34px;
  height: 39px;
  border: 4px solid #dc8b19;
  border-radius: 9px;
  transform: rotate(-4deg);
}

.tool-icon-b b {
  top: 29px;
  left: 28px;
  width: 20px;
  height: 4px;
  border-radius: 9px;
  background: #dc8b19;
  box-shadow: 0 10px 0 #dc8b19;
}

.tool-icon-c {
  background: #e8f8f5;
}

.tool-icon-c i {
  top: 20px;
  left: 21px;
  width: 35px;
  height: 35px;
  border: 4px solid var(--teal);
  border-radius: 50%;
  border-left-color: transparent;
}

.tool-icon-c b {
  top: 16px;
  left: 16px;
  width: 15px;
  height: 15px;
  border-top: 4px solid var(--teal);
  border-left: 4px solid var(--teal);
  transform: rotate(-15deg);
}

.tool-icon-d {
  background: #f0edff;
}

.tool-icon-d i {
  top: 18px;
  left: 21px;
  width: 34px;
  height: 39px;
  border: 4px solid #725ad5;
  border-radius: 7px;
}

.tool-icon-d b {
  top: 29px;
  left: 30px;
  width: 16px;
  height: 8px;
  border-bottom: 4px solid #725ad5;
  border-left: 4px solid #725ad5;
  transform: rotate(-45deg);
}

.feature-card h3 {
  margin: 0;
  color: #17314f;
  font-size: 22px;
  font-weight: 950;
}

.feature-card p {
  margin: 12px 0 0;
  color: #65778d;
  font-size: 13px;
  line-height: 1.75;
}

.together-section {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 86px;
  align-items: center;
  max-width: var(--content);
  margin: 0 auto;
  padding: 30px 0 126px;
}

.together-copy ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 18px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.together-copy li {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #536983;
  font-size: 12px;
  font-weight: 800;
}

.together-copy li span {
  display: inline-flex;
  width: 20px;
  height: 20px;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  background: #e4f7f2;
  color: #11937e;
  font-size: 10px;
}

.together-visual {
  position: relative;
  min-height: 450px;
  padding: 62px 58px;
  border: 1px solid #d9e9f8;
  border-radius: 38px;
  background:
    radial-gradient(circle at 82% 16%, rgba(255, 184, 61, 0.2), transparent 26%),
    linear-gradient(145deg, #eef7ff, #effaf7);
}

.team-card {
  padding: 28px;
  border: 1px solid #d5e5f4;
  border-radius: 27px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.team-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.team-avatars {
  display: flex;
  padding-left: 9px;
}

.team-avatars span {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  margin-left: -9px;
  border: 3px solid #fff;
  border-radius: 50%;
  background: #dcecff;
  color: #2967b3;
  font-size: 10px;
  font-weight: 900;
}

.team-avatars span:nth-child(2) { background: #e5f7ee; color: #138263; }
.team-avatars span:nth-child(3) { background: #fff0d7; color: #bf7219; }
.team-avatars span:nth-child(4) { background: #edf1f6; color: #79899b; }

.team-card-head small {
  color: #7a8ba1;
  font-size: 10px;
  font-weight: 800;
}

.team-card h3 {
  margin: 28px 0 4px;
  color: #183351;
  font-size: 27px;
  font-weight: 950;
}

.team-card > p {
  margin: 0;
  color: #71849a;
  font-size: 11px;
}

.team-progress {
  height: 9px;
  overflow: hidden;
  margin-top: 19px;
  border-radius: 99px;
  background: #e8eff6;
}

.team-progress span {
  position: relative;
  display: block;
  height: 100%;
  overflow: hidden;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), #4a9af1, var(--teal));
}

.team-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 23px;
}

.team-stats > div {
  display: flex;
  padding: 12px;
  border-radius: 14px;
  background: #f7fafe;
  flex-direction: column;
  gap: 3px;
}

.team-stats strong {
  color: #224b7d;
  font-family: Georgia, serif;
  font-size: 18px;
}

.team-stats span {
  color: #8291a3;
  font-size: 8px;
  font-weight: 800;
}

.achievement-card {
  position: absolute;
  right: 24px;
  bottom: 28px;
  display: flex;
  width: 260px;
  align-items: center;
  gap: 14px;
  padding: 15px;
  border: 1px solid #e7d4a9;
  border-radius: 20px;
  background: rgba(255, 253, 245, 0.96);
  box-shadow: 0 17px 40px rgba(133, 92, 30, 0.15);
  transform: rotate(-2deg);
}

.medal {
  display: flex;
  width: 54px;
  height: 54px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(145deg, #ffd66b, #f29a29);
  box-shadow: inset 0 0 0 5px rgba(255, 255, 255, 0.38);
  color: #fff;
  font-size: 24px;
}

.achievement-card > div:last-child {
  display: flex;
  flex-direction: column;
}

.achievement-card small {
  color: #bd7f2d;
  font-size: 7px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.achievement-card strong {
  margin-top: 3px;
  color: #503814;
  font-size: 16px;
}

.achievement-card span {
  color: #91784e;
  font-size: 9px;
}

.start-section {
  padding: 0 40px 76px;
}

.start-panel {
  position: relative;
  display: grid;
  max-width: var(--content);
  min-height: 360px;
  grid-template-columns: 170px 1fr 250px;
  gap: 46px;
  align-items: center;
  overflow: hidden;
  margin: 0 auto;
  padding: 56px;
  border-radius: 40px;
  background:
    radial-gradient(circle at 11% 90%, rgba(41, 134, 255, 0.22), transparent 31%),
    radial-gradient(circle at 85% 10%, rgba(255, 182, 62, 0.19), transparent 28%),
    linear-gradient(145deg, #0c2242, #113b62);
  color: #fff;
}

.start-panel::after {
  position: absolute;
  right: 12%;
  bottom: -190px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  content: "";
  box-shadow: 0 0 0 55px rgba(255, 255, 255, 0.025);
}

.start-logo {
  position: relative;
  z-index: 2;
  display: grid;
  width: 170px;
  aspect-ratio: 1;
  place-items: center;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 40px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.08));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.24),
    0 24px 50px rgba(1, 17, 36, 0.24);
}

.start-logo img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  border-radius: 28px;
  object-fit: contain;
  box-shadow: 0 16px 34px rgba(2, 22, 47, 0.22);
}

.start-copy {
  position: relative;
  z-index: 2;
}

.start-copy .section-kicker {
  color: #66d8cb;
}

.start-copy h2 {
  color: #fff;
}

.start-copy > p {
  max-width: 520px;
  margin-top: 17px;
  color: #bdd0e4;
}

.start-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.start-tags span {
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  color: #d3e1ef;
  font-size: 9px;
  font-weight: 800;
}

.qr-card {
  position: relative;
  z-index: 3;
  padding: 15px;
  border-radius: 25px;
  background: #fff;
  box-shadow: 0 24px 50px rgba(3, 18, 37, 0.23);
}

.qr-card img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 16px;
  object-fit: contain;
}

.qr-card div {
  display: flex;
  padding: 10px 4px 2px;
  flex-direction: column;
  gap: 3px;
  text-align: center;
}

.qr-card strong {
  color: #173452;
  font-size: 13px;
}

.qr-card span {
  color: #8795a7;
  font-size: 8px;
}

footer {
  display: grid;
  max-width: var(--content);
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  margin: 0 auto;
  padding: 0 0 46px;
  color: #73849a;
  font-size: 11px;
}

.footer-brand {
  justify-self: start;
}

.footer-brand img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
}

.footer-brand .brand-copy strong {
  color: #243b58;
  font-size: 14px;
}

.footer-brand .brand-copy small {
  font-size: 6px;
}

footer p {
  margin: 0;
  font-weight: 700;
}

footer > span {
  justify-self: end;
}

.filing-info {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 100%;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
  padding-top: 18px;
  border-top: 1px solid rgba(126, 146, 169, 0.2);
  color: #71839a;
  font-size: 11px;
}

.filing-info[hidden],
.filing-info a[hidden],
.filing-info span[hidden] {
  display: none;
}

.filing-heading {
  color: #4c6078;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.filing-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: inherit;
  line-height: 1.6;
  overflow-wrap: anywhere;
  text-underline-offset: 3px;
  transition:
    color 180ms ease,
    text-decoration-color 180ms ease;
}

.filing-link:hover {
  color: #2f78d4;
  text-decoration: underline;
  text-decoration-color: rgba(47, 120, 212, 0.45);
}

.filing-link:focus-visible {
  border-radius: 4px;
  outline: 2px solid rgba(47, 120, 212, 0.55);
  outline-offset: 3px;
}

.filing-icon {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.filing-link-police {
  color: #496e9d;
}

.filing-separator {
  width: 1px;
  height: 14px;
  background: rgba(126, 146, 169, 0.32);
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1180px) {
  .section,
  .together-section,
  footer {
    width: calc(100% - 64px);
  }

  .hero {
    grid-template-columns: minmax(0, 0.9fr) minmax(480px, 1.1fr);
    gap: 30px;
  }

  .floating-streak {
    right: 2px;
  }

  .floating-grammar {
    left: 0;
  }

  .toolkit-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-card {
    min-height: 290px;
  }
}

@media (max-width: 940px) {
  .site-header {
    top: 12px;
    width: calc(100% - 28px);
  }

  .desktop-nav,
  .header-cta {
    display: none;
  }

  .mobile-menu {
    position: relative;
    display: block;
    margin-left: auto;
  }

  .mobile-menu summary {
    display: flex;
    width: 44px;
    height: 44px;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 7px;
    border-radius: 13px;
    background: #edf5fd;
    list-style: none;
  }

  .mobile-menu summary::-webkit-details-marker {
    display: none;
  }

  .mobile-menu summary span {
    width: 19px;
    height: 2px;
    border-radius: 2px;
    background: #203a58;
  }

  .mobile-menu nav {
    position: absolute;
    top: 54px;
    right: 0;
    display: flex;
    width: 210px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: #fff;
    box-shadow: 0 20px 50px rgba(23, 64, 109, 0.17);
    flex-direction: column;
  }

  .mobile-menu nav a {
    padding: 11px 12px;
    border-radius: 10px;
    color: #405572;
    font-size: 13px;
    font-weight: 800;
  }

  .mobile-menu nav a:hover {
    background: #f0f6fd;
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 70px;
    padding: 132px 48px 86px;
  }

  .hero-copy {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
  }

  .eyebrow {
    justify-content: center;
  }

  .hero h1,
  .hero-description {
    margin-right: auto;
    margin-left: auto;
  }

  .hero-actions,
  .hero-note {
    justify-content: center;
  }

  .product-scene {
    width: min(100%, 620px);
    margin: 0 auto;
  }

  .stats-strip {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 22px;
  }

  .stats-strip > div:nth-child(2) {
    border-right: 0;
  }

  .features-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .feature-main {
    grid-row: auto;
    min-height: 730px;
  }

  .section-heading,
  .method-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .section-heading > p,
  .method-heading > p {
    max-width: 620px;
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .step-line i {
    display: none;
  }

  .together-section {
    grid-template-columns: 1fr;
  }

  .together-copy {
    max-width: 660px;
  }

  .start-panel {
    grid-template-columns: 130px 1fr;
  }

  .qr-card {
    grid-column: 2 / 3;
    width: 220px;
  }
}

@media (max-width: 640px) {
  .site-header {
    height: 62px;
    padding-left: 12px;
    border-radius: 18px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .brand-copy strong {
    font-size: 17px;
  }

  .hero {
    gap: 44px;
    padding: 112px 22px 64px;
  }

  .hero h1 {
    margin-top: 22px;
    font-size: 43px;
  }

  .hero-description {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-note {
    align-items: flex-start;
    font-size: 10px;
    line-height: 1.5;
    text-align: left;
  }

  .product-scene {
    min-height: 560px;
    transform: scale(0.86);
    transform-origin: top center;
  }

  .scene-halo {
    width: 440px;
    height: 440px;
  }

  .floating-streak {
    right: -30px;
  }

  .floating-grammar {
    left: -35px;
  }

  .stats-strip {
    width: calc(100% - 36px);
    padding: 26px 0;
  }

  .stats-strip > div {
    flex-direction: column;
    gap: 4px;
    text-align: center;
  }

  .stats-strip strong {
    font-size: 25px;
  }

  .stats-strip span {
    font-size: 10px;
  }

  .section,
  .together-section,
  footer {
    width: calc(100% - 36px);
  }

  .section {
    padding: 86px 0;
  }

  .section-heading {
    margin-bottom: 36px;
  }

  .section-heading h2,
  .method-heading h2,
  .together-copy h2,
  .start-copy h2 {
    font-size: 36px;
  }

  .feature-main {
    min-height: 700px;
    padding: 28px;
  }

  .feature-main h3,
  .feature-side h3 {
    font-size: 29px;
  }

  .feature-side {
    padding: 26px;
  }

  .book-cloud {
    height: 335px;
    margin-right: -8px;
    margin-left: -8px;
  }

  .chip-3 { left: 31%; }
  .chip-6 { left: 30%; }
  .chip-7 { right: 7px; }

  .method-section {
    padding: 86px 18px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 42px;
  }

  .step-card {
    min-height: auto;
  }

  .toolkit-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 275px;
  }

  .together-section {
    gap: 42px;
    padding-bottom: 86px;
  }

  .together-copy ul {
    grid-template-columns: 1fr;
  }

  .together-visual {
    min-height: 450px;
    padding: 36px 18px;
    border-radius: 28px;
  }

  .team-card {
    padding: 21px;
  }

  .team-stats {
    gap: 6px;
  }

  .team-stats > div {
    padding: 10px 7px;
  }

  .achievement-card {
    right: 10px;
    bottom: 27px;
    width: 240px;
  }

  .start-section {
    padding: 0 18px 60px;
  }

  .start-panel {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 32px 24px;
    border-radius: 28px;
    text-align: center;
  }

  .start-logo {
    width: 112px;
    margin: 0 auto;
    padding: 10px;
    border-radius: 28px;
  }

  .start-logo img {
    border-radius: 20px;
  }

  .start-copy > p {
    font-size: 13px;
  }

  .start-tags {
    justify-content: center;
  }

  .qr-card {
    grid-column: auto;
    width: min(100%, 230px);
    margin: 0 auto;
  }

  footer {
    grid-template-columns: 1fr;
    gap: 18px;
    justify-items: center;
    text-align: center;
  }

  .footer-brand,
  footer > span {
    justify-self: center;
  }

  .filing-info {
    gap: 10px;
    margin-top: 2px;
    padding-top: 16px;
  }

  .filing-heading {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Homepage UI polish — premium harbor theme */

:root {
  --navy: #071a34;
  --navy-soft: #0d2c53;
  --electric: #4b9cff;
  --aqua: #5de1d3;
}

body {
  background:
    radial-gradient(circle at 8% 28%, rgba(66, 143, 255, 0.06), transparent 24%),
    #f6f9fd;
}

main {
  overflow: clip;
}

.site-header {
  height: 76px;
  padding: 0 12px 0 18px;
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(7, 25, 51, 0.82);
  box-shadow:
    0 18px 48px rgba(2, 13, 30, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  color: #fff;
  backdrop-filter: blur(22px) saturate(130%);
}

.site-header::before {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(115deg, rgba(255, 255, 255, 0.08), transparent 36%);
  content: "";
  pointer-events: none;
}

.site-header .brand,
.site-header .desktop-nav,
.site-header .header-actions,
.site-header .mobile-menu {
  position: relative;
  z-index: 1;
}

.site-header .brand img {
  box-shadow:
    0 9px 24px rgba(0, 0, 0, 0.24),
    0 0 0 1px rgba(255, 255, 255, 0.12);
}

.site-header .brand-copy strong {
  color: #fff;
}

.site-header .brand-copy small {
  color: #86b9f7;
}

.desktop-nav {
  gap: 27px;
  color: rgba(226, 238, 251, 0.78);
}

.desktop-nav a {
  transition: color 180ms ease;
}

.desktop-nav a:hover {
  color: #fff;
}

.desktop-nav a::after {
  bottom: 5px;
  height: 3px;
  background: linear-gradient(90deg, var(--electric), var(--aqua));
  box-shadow: 0 0 12px rgba(93, 225, 211, 0.45);
}

.header-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 9px;
}

.header-cta {
  position: relative;
  height: 46px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: linear-gradient(135deg, #3d91ff, #1f6fe5);
  box-shadow: 0 12px 26px rgba(20, 95, 203, 0.34);
}

.header-cta:hover {
  background: linear-gradient(135deg, #5aa6ff, #2a7bf0);
}

.header-cta::after,
.button-primary::after {
  position: absolute;
  top: -80%;
  left: 0;
  width: 32%;
  height: 260%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.46), transparent);
  content: "";
  transform: translate3d(-220%, 0, 0) rotate(20deg);
  animation: cta-shine 4.8s ease-in-out infinite;
  pointer-events: none;
  will-change: transform;
}

.hero {
  min-height: 900px;
  grid-template-columns: minmax(0, 0.94fr) minmax(520px, 1.06fr);
  border-radius: 0 0 56px 56px;
  background:
    radial-gradient(circle at 15% 18%, rgba(62, 137, 255, 0.32), transparent 30%),
    radial-gradient(circle at 78% 28%, rgba(44, 200, 211, 0.2), transparent 30%),
    radial-gradient(circle at 92% 85%, rgba(255, 177, 55, 0.17), transparent 24%),
    linear-gradient(138deg, #06162d 0%, #092447 50%, #0b345c 100%);
  box-shadow: 0 30px 90px rgba(14, 50, 92, 0.18);
}

.hero::before {
  position: absolute;
  top: 112px;
  left: max(26px, calc((100vw - var(--content)) / 2 - 44px));
  width: 160px;
  height: 160px;
  border: 1px solid rgba(126, 188, 255, 0.12);
  border-radius: 50%;
  box-shadow:
    0 0 0 46px rgba(126, 188, 255, 0.025),
    0 0 0 92px rgba(126, 188, 255, 0.018);
  content: "";
}

.hero-grid {
  opacity: 0.25;
  background-image:
    linear-gradient(rgba(158, 203, 255, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(158, 203, 255, 0.12) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(circle at center, #000, transparent 84%);
}

.hero-wash {
  position: absolute;
  top: -35%;
  right: -10%;
  width: 58vw;
  height: 58vw;
  border-radius: 50%;
  background: conic-gradient(
    from 130deg,
    rgba(49, 132, 244, 0),
    rgba(49, 132, 244, 0.12),
    rgba(77, 227, 211, 0.08),
    rgba(49, 132, 244, 0)
  );
  filter: blur(8px);
}

.hero-orb-one {
  top: 168px;
  right: 7vw;
  border-color: rgba(255, 182, 67, 0.48);
  box-shadow: 0 0 42px rgba(255, 177, 48, 0.2);
  animation: ring-breathe 5.6s ease-in-out infinite;
  will-change: transform, opacity;
}

.hero-orb-two {
  bottom: 154px;
  left: 47%;
  background: rgba(93, 225, 211, 0.8);
  box-shadow: 0 0 28px rgba(93, 225, 211, 0.6);
  animation: dot-float 4.2s ease-in-out infinite;
  will-change: transform;
}

.eyebrow {
  border-color: rgba(135, 190, 255, 0.24);
  background: rgba(103, 165, 237, 0.1);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07);
  color: #8dc5ff;
  backdrop-filter: blur(10px);
}

.hero h1 {
  color: #fff;
  font-size: clamp(52px, 5.2vw, 76px);
  letter-spacing: -0.06em;
  text-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
}

.hero h1 em {
  background: linear-gradient(95deg, #6bb3ff 4%, #74e4d7 66%, #b9f2e8 100%);
  color: transparent;
  background-clip: text;
  -webkit-background-clip: text;
}

.hero h1 em::after {
  background: rgba(255, 186, 67, 0.8);
  box-shadow: 0 0 18px rgba(255, 177, 48, 0.3);
}

.hero-description {
  color: #b8cbe0;
  font-size: 16px;
}

.button-primary {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: linear-gradient(135deg, #4a9cff, #2878e7 64%, #2465cc);
  box-shadow:
    0 17px 38px rgba(27, 111, 224, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.button-secondary {
  border-color: rgba(174, 205, 239, 0.22);
  background: rgba(255, 255, 255, 0.07);
  color: #e5f1ff;
  backdrop-filter: blur(12px);
}

.button-secondary:hover {
  border-color: rgba(130, 190, 255, 0.42);
  background: rgba(255, 255, 255, 0.11);
}

.hero-note {
  color: #92aac3;
}

.wechat-mark {
  background: rgba(70, 218, 162, 0.13);
  color: #6be3b7;
  box-shadow: inset 0 0 0 1px rgba(107, 227, 183, 0.18);
}

.hero-meta {
  display: grid;
  max-width: 570px;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 28px;
  padding-top: 21px;
  border-top: 1px solid rgba(163, 199, 235, 0.13);
}

.hero-meta span {
  display: flex;
  color: #9db3cb;
  font-size: 10px;
  font-weight: 750;
  flex-direction: column;
  gap: 4px;
}

.hero-meta b {
  color: #5de1d3;
  font-family: Georgia, serif;
  font-size: 9px;
  letter-spacing: 0.08em;
}

.product-scene {
  min-height: 650px;
}

.scene-halo {
  top: 54px;
  width: 540px;
  height: 540px;
  background:
    radial-gradient(circle at 45% 42%, rgba(87, 170, 255, 0.24), rgba(39, 118, 202, 0.14) 52%, rgba(28, 103, 176, 0) 72%);
  box-shadow: inset 0 0 90px rgba(90, 207, 222, 0.06);
}

.scene-status {
  position: absolute;
  z-index: 5;
  top: 18px;
  left: 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 13px;
  border: 1px solid rgba(171, 211, 250, 0.18);
  border-radius: 999px;
  background: rgba(7, 27, 53, 0.72);
  box-shadow: 0 14px 34px rgba(0, 12, 31, 0.22);
  color: #c4d8ec;
  font-size: 9px;
  font-weight: 800;
  backdrop-filter: blur(14px);
}

.scene-status i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #5de1ad;
  box-shadow: 0 0 0 4px rgba(93, 225, 173, 0.11), 0 0 12px rgba(93, 225, 173, 0.7);
  animation: status-pulse 3.2s ease-in-out infinite;
  will-change: transform, opacity;
}

.phone-shell {
  top: 2px;
  border-color: rgba(255, 255, 255, 0.96);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), #f2f7fd 16%, #f5f9fe 100%);
  box-shadow:
    0 52px 110px rgba(0, 11, 30, 0.42),
    0 0 0 1px rgba(134, 192, 248, 0.22),
    0 0 80px rgba(62, 151, 245, 0.12);
  animation: device-float 6.8s ease-in-out infinite;
  backface-visibility: hidden;
  will-change: transform;
}

.floating-card {
  border-color: rgba(193, 218, 243, 0.72);
  box-shadow:
    0 21px 52px rgba(0, 18, 45, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.floating-streak {
  animation: card-float-right 5.2s ease-in-out infinite;
  will-change: transform;
}

.floating-grammar {
  animation: card-float-left 5.8s 0.45s ease-in-out infinite;
  will-change: transform;
}

.stats-section {
  position: relative;
  z-index: 8;
  display: grid;
  width: min(calc(100% - 48px), var(--content));
  grid-template-columns: 0.72fr 1.28fr;
  align-items: stretch;
  overflow: hidden;
  margin: -52px auto 0;
  border: 1px solid rgba(205, 222, 240, 0.88);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow:
    0 28px 70px rgba(18, 64, 118, 0.14),
    inset 0 1px 0 #fff;
  backdrop-filter: blur(18px);
  animation: panel-rise 720ms 320ms cubic-bezier(0.2, 0.72, 0.2, 1) both;
}

.stats-intro {
  display: flex;
  justify-content: center;
  padding: 27px 30px;
  border-right: 1px solid #e2ebf5;
  background:
    radial-gradient(circle at 0 100%, rgba(64, 151, 255, 0.13), transparent 42%),
    linear-gradient(145deg, #f4f9ff, #fff);
  flex-direction: column;
}

.stats-intro span {
  color: #3c84df;
  font-size: 8px;
  font-weight: 950;
  letter-spacing: 0.18em;
}

.stats-intro strong {
  margin-top: 6px;
  color: #122b4b;
  font-size: 18px;
  font-weight: 950;
}

.stats-intro small {
  margin-top: 4px;
  color: #71849a;
  font-size: 9px;
  line-height: 1.55;
}

.stats-strip {
  max-width: none;
  gap: 9px;
  margin: 0;
  padding: 20px;
  border: 0;
}

.stats-strip > div {
  align-items: flex-start;
  justify-content: center;
  gap: 3px;
  padding: 14px 13px;
  border: 1px solid #e6eef7;
  border-radius: 18px;
  background: #f9fbfe;
  flex-direction: column;
}

.stats-strip > div:last-child,
.stats-strip > div:nth-child(2) {
  border-right: 1px solid #e6eef7;
}

.stats-strip strong {
  background: linear-gradient(100deg, #116cdb, #31a1ec);
  color: transparent;
  background-clip: text;
  -webkit-background-clip: text;
  font-size: 27px;
}

.stats-strip span {
  color: #6f8196;
  font-size: 9px;
}

.features-section {
  padding-top: 112px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border: 1px solid #d9e9fb;
  border-radius: 999px;
  background: #eef6ff;
  letter-spacing: 0.14em;
}

.section-heading h2,
.together-copy h2 {
  text-wrap: balance;
}

.section-heading > p {
  padding: 0 0 3px 24px;
  border-left: 2px solid #d9e8f7;
}

.feature-main,
.feature-side,
.feature-card,
.together-visual {
  box-shadow: 0 20px 55px rgba(28, 75, 130, 0.07);
}

.feature-main,
.feature-side {
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease;
}

.feature-main:hover,
.feature-side:hover {
  border-color: #bdd9f5;
  box-shadow: 0 28px 70px rgba(28, 83, 148, 0.12);
  transform: translateY(-5px);
}

.feature-main {
  background:
    radial-gradient(circle at 88% 10%, rgba(105, 189, 255, 0.2), transparent 30%),
    radial-gradient(circle at 90% 92%, rgba(28, 130, 242, 0.24), transparent 33%),
    linear-gradient(155deg, #e8f4ff 0%, #fbfdff 56%, #edf9f6 100%);
}

.feature-label {
  box-shadow: 0 8px 18px rgba(39, 101, 167, 0.06);
}

.book-chip {
  box-shadow:
    0 12px 24px rgba(39, 93, 151, 0.1),
    inset 0 1px 0 #fff;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.book-chip:hover {
  box-shadow: 0 18px 34px rgba(39, 93, 151, 0.16);
  transform: translateY(-4px);
}

.method-section {
  margin: 18px 24px;
  border-radius: 44px;
  background:
    radial-gradient(circle at 12% 10%, rgba(63, 142, 249, 0.28), transparent 31%),
    radial-gradient(circle at 87% 28%, rgba(55, 206, 194, 0.16), transparent 29%),
    linear-gradient(145deg, #071a34 0%, #0c2b51 58%, #0d3d5d 100%);
  box-shadow: 0 30px 80px rgba(8, 38, 72, 0.2);
}

.method-heading .section-kicker,
.start-copy .section-kicker {
  border-color: rgba(104, 220, 207, 0.18);
  background: rgba(93, 225, 211, 0.08);
}

.step-card {
  border-color: rgba(174, 212, 247, 0.16);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.035));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.step-card:hover {
  border-color: rgba(117, 217, 208, 0.3);
  box-shadow: 0 22px 50px rgba(0, 15, 35, 0.2);
}

.feature-card {
  border-color: #e0eaf5;
  background: linear-gradient(155deg, #fff, #f9fbfe);
}

.feature-card:nth-child(2) {
  background: linear-gradient(155deg, #fffdfa, #fff8ea);
}

.feature-card:nth-child(3) {
  background: linear-gradient(155deg, #fbfffe, #edf9f6);
}

.feature-card:nth-child(4) {
  background: linear-gradient(155deg, #fdfcff, #f3f0ff);
}

.together-visual {
  border-color: #d8e7f6;
  background:
    radial-gradient(circle at 15% 80%, rgba(75, 156, 255, 0.16), transparent 29%),
    radial-gradient(circle at 82% 16%, rgba(255, 184, 61, 0.24), transparent 26%),
    linear-gradient(145deg, #eef7ff, #effaf7);
}

.team-card {
  box-shadow:
    0 30px 75px rgba(31, 91, 162, 0.16),
    inset 0 1px 0 #fff;
}

.start-panel {
  border: 1px solid rgba(137, 190, 242, 0.13);
  background:
    radial-gradient(circle at 11% 90%, rgba(41, 134, 255, 0.27), transparent 31%),
    radial-gradient(circle at 85% 10%, rgba(255, 182, 62, 0.24), transparent 28%),
    linear-gradient(145deg, #071a34, #0d3459);
  box-shadow: 0 30px 80px rgba(8, 44, 80, 0.2);
}

.qr-card {
  box-shadow:
    0 28px 60px rgba(3, 18, 37, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.8);
  transition: transform 200ms ease;
}

.qr-card:hover {
  transform: translateY(-6px) rotate(1deg);
}

@keyframes device-float {
  0%,
  100% {
    transform: translateX(-50%) translateY(0) rotate(1.1deg);
  }
  50% {
    transform: translateX(-50%) translateY(-10px) rotate(0.35deg);
  }
}

@keyframes card-float-right {
  0%,
  100% {
    transform: translateY(0) rotate(3deg);
  }
  50% {
    transform: translateY(-11px) rotate(1.4deg);
  }
}

@keyframes card-float-left {
  0%,
  100% {
    transform: translateY(0) rotate(-3deg);
  }
  50% {
    transform: translateY(9px) rotate(-1.4deg);
  }
}

@keyframes status-pulse {
  0%,
  100% {
    opacity: 0.72;
    transform: scale(0.88);
  }
  50% {
    opacity: 1;
    transform: scale(1.12);
  }
}

@keyframes ring-breathe {
  0%,
  100% {
    opacity: 0.72;
    transform: scale(0.92);
  }
  50% {
    opacity: 1;
    transform: scale(1.08);
  }
}

@keyframes dot-float {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(8px, -14px, 0);
  }
}

@keyframes cta-shine {
  0%,
  58% {
    transform: translate3d(-220%, 0, 0) rotate(20deg);
  }
  82%,
  100% {
    transform: translate3d(420%, 0, 0) rotate(20deg);
  }
}

@keyframes panel-rise {
  from {
    opacity: 0;
    transform: translateY(28px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes progress-shimmer {
  0%,
  36% {
    transform: translateX(-120%);
  }
  72%,
  100% {
    transform: translateX(120%);
  }
}

@media (max-width: 1180px) {
  .desktop-nav {
    gap: 19px;
  }

  .hero {
    grid-template-columns: minmax(0, 0.92fr) minmax(470px, 1.08fr);
  }
}

@media (max-width: 940px) {
  .hero-orb-one,
  .hero-orb-two,
  .floating-grammar {
    animation: none;
    will-change: auto;
  }

  .site-header {
    height: 70px;
  }

  .header-actions {
    display: none;
  }

  .mobile-menu summary {
    border: 1px solid rgba(255, 255, 255, 0.11);
    background: rgba(255, 255, 255, 0.09);
  }

  .mobile-menu summary span {
    background: #dcecff;
  }

  .mobile-menu nav {
    border-color: rgba(139, 188, 237, 0.2);
    background: rgba(8, 27, 53, 0.96);
    box-shadow: 0 24px 55px rgba(0, 15, 35, 0.34);
    backdrop-filter: blur(18px);
  }

  .mobile-menu nav a {
    color: #d7e8fa;
  }

  .mobile-menu nav a:hover {
    background: rgba(255, 255, 255, 0.08);
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 70px;
    padding: 132px 48px 86px;
    border-radius: 0 0 42px 42px;
  }

  .hero-meta {
    margin-right: auto;
    margin-left: auto;
  }

  .scene-status {
    left: 28px;
  }

  .stats-section {
    grid-template-columns: 1fr;
    margin-top: -36px;
  }

  .stats-intro {
    padding: 22px 26px;
    border-right: 0;
    border-bottom: 1px solid #e2ebf5;
    text-align: center;
  }

  .stats-strip {
    grid-template-columns: repeat(4, 1fr);
  }

  .method-section {
    margin-right: 14px;
    margin-left: 14px;
    border-radius: 36px;
  }
}

@media (max-width: 640px) {
  .site-header {
    height: 62px;
    background: rgba(7, 25, 51, 0.9);
  }

  .hero {
    gap: 44px;
    padding-top: 112px;
    padding-right: 22px;
    padding-bottom: 64px;
    padding-left: 22px;
    border-radius: 0 0 32px 32px;
  }

  .hero h1 {
    color: #fff;
    font-size: 42px;
    line-height: 1.12;
  }

  .hero-description {
    color: #b8cbe0;
  }

  .hero-note {
    justify-content: center;
    color: #92aac3;
    text-align: center;
  }

  .hero-meta {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px 8px;
    text-align: left;
  }

  .product-scene {
    min-height: 575px;
  }

  .scene-status {
    top: -18px;
    left: 50%;
    white-space: nowrap;
    transform: translateX(-50%);
  }

  .stats-section {
    width: calc(100% - 24px);
    margin-top: -24px;
    border-radius: 24px;
  }

  .stats-intro {
    padding: 20px 18px;
  }

  .stats-strip {
    width: auto;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    padding: 12px;
  }

  .stats-strip > div {
    min-height: 86px;
    align-items: center;
    padding: 12px 8px;
    text-align: center;
  }

  .stats-strip strong {
    font-size: 25px;
  }

  .features-section {
    padding-top: 82px;
  }

  .section-heading > p {
    padding: 16px 0 0;
    border-top: 1px solid #dfe9f4;
    border-left: 0;
  }

  .method-section {
    margin: 8px 10px;
    padding-right: 18px;
    padding-left: 18px;
    border-radius: 30px;
  }
}