:root {
  --ink: #111827;
  --muted: #4b5b73;
  --blue: #2d5fa8;
  --blue-deep: #173b73;
  --blue-soft: #eaf4ff;
  --yellow: #ffe453;
  --white: #ffffff;
  --line: #151a24;
  --shadow: 0 26px 70px rgba(31, 69, 118, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--blue-soft);
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 50%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: min(1120px, 100%);
  min-height: 58px;
  padding: 8px 10px 8px 14px;
  border: 2px solid rgba(17, 24, 39, 0.08);
  border-radius: 0 0 18px 18px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 16px 50px rgba(42, 91, 160, 0.12);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 900;
}

.brand-logo {
  display: block;
  width: 42px;
  height: 42px;
  border: 2px solid rgba(21, 26, 36, 0.12);
  border-radius: 12px;
  object-fit: cover;
  background: var(--white);
  box-shadow: 3px 3px 0 var(--yellow);
}

.brand-name {
  overflow: hidden;
  color: var(--blue-deep);
  font-size: 18px;
  letter-spacing: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  color: #26364e;
  font-size: 14px;
  font-weight: 700;
}

.site-nav a {
  transition: color 160ms ease;
}

.site-nav a:hover {
  color: var(--blue);
}

.header-cta {
  justify-self: end;
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 2px solid var(--line);
  border-radius: 12px;
  color: var(--white);
  background: var(--blue);
  box-shadow: 3px 3px 0 var(--yellow);
  font-size: 14px;
  font-weight: 900;
}

.hero {
  position: relative;
  display: grid;
  min-height: 100vh;
  padding: 132px 24px 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 14% 22%, rgba(255, 228, 83, 0.42), transparent 24%),
    radial-gradient(circle at 82% 8%, rgba(45, 95, 168, 0.18), transparent 27%),
    linear-gradient(180deg, #edf7ff 0%, #dfeeff 100%);
}

.hero::before,
.hero::after {
  position: absolute;
  z-index: 0;
  content: "";
  border: 3px solid rgba(17, 24, 39, 0.1);
  transform: rotate(-8deg);
}

.hero::before {
  top: 160px;
  left: -90px;
  width: 180px;
  height: 180px;
  border-radius: 46px;
}

.hero::after {
  right: -70px;
  bottom: 190px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(920px, 100%);
  margin: 0 auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  margin: 0 0 20px;
  padding: 0 15px;
  border: 2px solid rgba(21, 26, 36, 0.9);
  border-radius: 999px;
  color: var(--blue-deep);
  background: var(--yellow);
  box-shadow: 3px 3px 0 rgba(21, 26, 36, 0.92);
  font-size: 15px;
  font-weight: 900;
}

h1 {
  max-width: 900px;
  margin: 0 auto;
  color: #0c1322;
  font-size: clamp(46px, 7vw, 92px);
  line-height: 0.98;
  letter-spacing: 0;
  font-weight: 950;
}

.headline-line {
  display: block;
}

.headline-subline {
  margin-top: 8px;
  font-size: 0.74em;
  line-height: 1.1;
}

.headline-highlight {
  position: relative;
  isolation: isolate;
  margin-right: 0.08em;
  white-space: nowrap;
}

.headline-highlight > span {
  position: relative;
  z-index: 1;
}

.headline-highlight::after {
  position: absolute;
  z-index: 0;
  right: -0.08em;
  bottom: 0.04em;
  left: -0.08em;
  height: 0.18em;
  border: 2px solid rgba(21, 26, 36, 0.84);
  border-radius: 999px;
  background: var(--yellow);
  content: "";
  transform: rotate(-1deg);
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  width: min(760px, 100%);
  margin: 26px auto 0;
}

.service-tags span {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  padding: 0 15px;
  border: 2px solid rgba(21, 26, 36, 0.9);
  border-radius: 999px;
  color: #101827;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 3px 3px 0 rgba(255, 228, 83, 0.95);
  font-size: 15px;
  font-weight: 900;
}

.hero-copy {
  width: min(720px, 100%);
  margin: 20px auto 0;
  color: var(--muted);
  font-size: 18px;
  font-weight: 650;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-width: 148px;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 2px solid var(--line);
  border-radius: 14px;
  font-size: 16px;
  font-weight: 900;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--blue);
  box-shadow: 5px 5px 0 var(--yellow);
}

.button-secondary {
  color: var(--ink);
  background: var(--white);
  box-shadow: 5px 5px 0 rgba(21, 26, 36, 0.14);
}

.micro-note {
  margin-top: 18px;
  color: #5c6b80;
  font-size: 13px;
  font-weight: 750;
}

.planning-panel {
  position: relative;
  z-index: 1;
  width: min(980px, 100%);
  margin: 54px auto -72px;
  border: 2px solid rgba(21, 26, 36, 0.18);
  border-radius: 20px 20px 0 0;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-toolbar {
  display: flex;
  gap: 8px;
  height: 42px;
  align-items: center;
  padding: 0 18px;
  border-bottom: 2px solid rgba(21, 26, 36, 0.08);
  background: #f8fbff;
}

.panel-toolbar span {
  width: 10px;
  height: 10px;
  border: 1px solid rgba(21, 26, 36, 0.35);
  border-radius: 50%;
  background: var(--yellow);
}

.panel-toolbar span:nth-child(2) {
  background: #82c7ff;
}

.panel-toolbar span:nth-child(3) {
  background: #8fd6a4;
}

.panel-content {
  padding: 28px;
}

.panel-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 18px;
}

.panel-heading p {
  margin: 0;
  color: var(--blue);
  font-size: 15px;
  font-weight: 900;
}

.panel-heading strong {
  color: #182338;
  font-size: 24px;
  font-weight: 950;
  text-align: right;
}

.planning-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.planning-grid article {
  min-height: 154px;
  padding: 18px;
  border: 2px solid rgba(21, 26, 36, 0.12);
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #f6faff 100%);
}

.planning-grid span {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 950;
}

.planning-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 950;
}

.planning-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
  line-height: 1.55;
}

.section {
  padding: 92px max(24px, calc((100% - 1120px) / 2));
  background: var(--white);
}

.section:nth-of-type(odd) {
  background: #f7fbff;
}

.section-heading {
  width: min(820px, 100%);
  margin: 0 auto 38px;
  text-align: center;
}

.section-heading.align-left {
  margin-right: 0;
  margin-left: 0;
  text-align: left;
}

.section-heading span,
.app-copy > span,
.founder-copy > span,
.contact-section span {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  padding: 0 13px;
  border: 2px solid var(--line);
  border-radius: 999px;
  color: var(--blue-deep);
  background: var(--yellow);
  box-shadow: 3px 3px 0 rgba(21, 26, 36, 0.9);
  font-size: 14px;
  font-weight: 950;
}

.section-heading h2,
.app-copy h2,
.founder-copy h2,
.contact-section h2 {
  margin: 18px 0 0;
  color: #0f1d34;
  font-size: clamp(32px, 4.8vw, 56px);
  line-height: 1.08;
  letter-spacing: 0;
  font-weight: 950;
}

.section-heading p,
.app-copy p,
.contact-section p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
  font-weight: 650;
  line-height: 1.8;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.advantage-grid article,
.service-list article,
.service-card,
.contact-card {
  border: 2px solid rgba(21, 26, 36, 0.12);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 5px 5px 0 rgba(45, 95, 168, 0.16);
}

.advantage-grid article {
  min-height: 242px;
  padding: 22px;
}

.advantage-grid span {
  display: inline-flex;
  margin-bottom: 20px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 950;
}

.advantage-grid h3,
.service-list strong {
  display: block;
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 22px;
  line-height: 1.22;
  font-weight: 950;
}

.advantage-grid p,
.service-list p,
.founder-points p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  font-weight: 650;
  line-height: 1.72;
}

.service-section {
  background:
    radial-gradient(circle at 88% 18%, rgba(255, 228, 83, 0.32), transparent 24%),
    linear-gradient(180deg, #ffffff 0%, #eaf4ff 100%);
}

.service-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: start;
}

.service-list {
  display: grid;
  gap: 14px;
}

.service-list article {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 22px;
  align-items: center;
  min-height: 94px;
  padding: 20px 24px;
  background: #ffffff;
}

.service-list strong {
  min-height: 42px;
  margin: 0;
  padding: 8px 12px;
  border: 2px solid var(--line);
  border-radius: 10px;
  color: var(--white);
  background: var(--blue);
  box-shadow: 3px 3px 0 var(--yellow);
  text-align: center;
}

.service-card {
  padding: 22px 24px;
  background: #fffdf1;
}

.service-card p {
  margin: 0 0 16px;
  color: var(--blue-deep);
  font-size: 22px;
  font-weight: 950;
}

.service-card div,
.app-feature-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.service-card span,
.app-feature-grid span {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  padding: 0 13px;
  border: 2px solid rgba(21, 26, 36, 0.9);
  border-radius: 999px;
  color: var(--ink);
  background: var(--white);
  box-shadow: 3px 3px 0 rgba(255, 228, 83, 0.95);
  font-size: 14px;
  font-weight: 900;
}

.app-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 390px);
  gap: 56px;
  align-items: center;
  overflow: hidden;
}

.app-copy .button {
  margin-top: 28px;
}

.app-feature-grid {
  margin-top: 24px;
}

.phone-preview {
  width: min(390px, 100%);
  max-height: 760px;
  margin: 0 auto;
  padding: 12px;
  border: 3px solid rgba(21, 26, 36, 0.9);
  border-radius: 38px;
  background: #ffffff;
  box-shadow: 16px 18px 0 rgba(255, 228, 83, 0.9), var(--shadow);
  overflow: hidden;
}

.phone-preview img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 28px;
}

.founder-section {
  display: grid;
  grid-template-columns: minmax(260px, 360px) minmax(0, 1fr);
  gap: 46px;
  align-items: center;
  background:
    radial-gradient(circle at 14% 18%, rgba(255, 228, 83, 0.28), transparent 24%),
    #f7fbff;
}

.founder-photo {
  padding: 12px;
  border: 3px solid rgba(21, 26, 36, 0.9);
  border-radius: 20px;
  background: #ffffff;
  box-shadow: 10px 10px 0 rgba(45, 95, 168, 0.22);
}

.founder-photo img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: 12px;
  object-fit: cover;
  object-position: center 18%;
}

.founder-title {
  margin: 12px 0 0;
  color: var(--blue);
  font-size: 19px;
  font-weight: 950;
}

.founder-points {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.founder-points p {
  padding: 18px;
  border: 2px solid rgba(21, 26, 36, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.86);
}

.founder-points strong {
  color: var(--ink);
  font-weight: 950;
}

.text-highlight {
  position: relative;
  isolation: isolate;
  color: var(--blue-deep);
  font-weight: 900;
}

.text-highlight::after {
  position: absolute;
  z-index: -1;
  right: -0.06em;
  bottom: 0.08em;
  left: -0.06em;
  height: 0.42em;
  border-radius: 4px;
  background: rgba(255, 228, 83, 0.72);
  content: "";
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 430px);
  gap: 28px;
  align-items: center;
  padding: 84px max(24px, calc((100% - 1120px) / 2)) 36px;
  color: var(--ink);
  background: linear-gradient(135deg, #ffe453 0%, #fff5a8 46%, #eaf4ff 100%);
}

.contact-card {
  padding: 28px;
  background: rgba(255, 255, 255, 0.88);
}

.contact-card strong {
  display: block;
  color: var(--ink);
  font-size: 28px;
  line-height: 1.25;
  font-weight: 950;
}

.contact-card p {
  margin-top: 14px;
  font-size: 16px;
}

.contact-beian {
  grid-column: 1 / -1;
  margin: 8px 0 0;
  padding-top: 24px;
  border-top: 1px solid rgba(21, 26, 36, 0.1);
  color: #6b7a90;
  text-align: center;
  font-size: 13px;
  font-weight: 650;
}

.contact-beian a:hover {
  color: var(--blue);
}

.consult-modal {
  position: fixed;
  z-index: 50;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.consult-modal:target {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(12, 19, 34, 0.58);
  backdrop-filter: blur(10px);
}

.modal-panel {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 26px;
  width: min(760px, 100%);
  padding: 28px;
  border: 3px solid var(--line);
  border-radius: 20px;
  background:
    radial-gradient(circle at 92% 12%, rgba(255, 228, 83, 0.28), transparent 26%),
    #ffffff;
  box-shadow: 10px 10px 0 var(--yellow), var(--shadow);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 2px solid var(--line);
  border-radius: 50%;
  background: #ffffff;
  font-size: 24px;
  font-weight: 950;
  line-height: 1;
}

.modal-copy > span {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  padding: 0 13px;
  border: 2px solid var(--line);
  border-radius: 999px;
  color: var(--blue-deep);
  background: var(--yellow);
  box-shadow: 3px 3px 0 rgba(21, 26, 36, 0.9);
  font-size: 14px;
  font-weight: 950;
}

.modal-copy h2 {
  margin: 18px 0 0;
  color: #0f1d34;
  font-size: 32px;
  line-height: 1.12;
  letter-spacing: 0;
  font-weight: 950;
}

.modal-copy p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16px;
  font-weight: 650;
  line-height: 1.7;
}

.modal-info {
  margin-top: 22px;
  padding: 18px;
  border: 2px solid rgba(21, 26, 36, 0.12);
  border-radius: 14px;
  background: #f7fbff;
}

.modal-info strong {
  display: block;
  color: var(--ink);
  font-size: 21px;
  font-weight: 950;
}

.modal-qrcode {
  align-self: center;
  padding: 14px;
  border: 2px solid rgba(21, 26, 36, 0.12);
  border-radius: 16px;
  background: #fffdf1;
  text-align: center;
}

.modal-qrcode img {
  display: block;
  width: 100%;
  border-radius: 10px;
}

.modal-qrcode p {
  margin: 12px 0 0;
  color: var(--ink);
  font-size: 15px;
  font-weight: 950;
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    display: none;
  }

  .hero {
    padding-top: 116px;
  }

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

  .panel-heading {
    display: block;
  }

  .panel-heading strong {
    display: block;
    margin-top: 6px;
    text-align: left;
  }

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

  .service-layout,
  .app-section,
  .founder-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .app-section {
    gap: 38px;
  }

  .founder-section {
    gap: 30px;
  }
}

@media (max-width: 620px) {
  .site-header {
    top: 0;
    width: 100%;
    min-height: 54px;
    border-radius: 0 0 15px 15px;
  }

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

  .brand-name {
    max-width: 152px;
    font-size: 15px;
  }

  .header-cta {
    min-height: 36px;
    padding: 0 12px;
    border-radius: 10px;
    font-size: 13px;
    box-shadow: 2px 2px 0 var(--yellow);
  }

  .hero {
    min-height: auto;
    padding: 102px 16px 0;
  }

  .eyebrow {
    margin-bottom: 18px;
    font-size: 13px;
  }

  h1 {
    font-size: clamp(40px, 13vw, 58px);
    line-height: 1.03;
  }

  .headline-highlight {
    margin-right: 0;
  }

  .hero-copy {
    font-size: 16px;
    line-height: 1.7;
  }

  .service-tags {
    margin-top: 22px;
    gap: 8px;
  }

  .service-tags span {
    min-height: 34px;
    padding: 0 12px;
    font-size: 13px;
  }

  .hero-actions {
    gap: 12px;
    margin-top: 26px;
  }

  .button {
    flex: 1 1 100%;
    min-height: 50px;
    font-size: 15px;
  }

  .micro-note {
    width: min(300px, 100%);
    margin-right: auto;
    margin-left: auto;
    line-height: 1.55;
  }

  .planning-panel {
    margin-top: 34px;
    margin-bottom: -58px;
    border-radius: 16px 16px 0 0;
  }

  .panel-content {
    padding: 18px;
  }

  .panel-heading strong {
    font-size: 20px;
    line-height: 1.25;
  }

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

  .planning-grid article {
    min-height: 126px;
  }

  .section {
    padding: 64px 16px;
  }

  .section-heading {
    margin-bottom: 28px;
    text-align: left;
  }

  .section-heading h2,
  .app-copy h2,
  .founder-copy h2,
  .contact-section h2 {
    font-size: clamp(28px, 9vw, 40px);
  }

  .section-heading p,
  .app-copy p,
  .contact-section p {
    font-size: 15px;
  }

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

  .advantage-grid article {
    min-height: auto;
  }

  .service-list article {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 18px;
  }

  .service-list strong {
    width: fit-content;
    min-width: 118px;
  }

  .service-card {
    padding: 20px;
  }

  .phone-preview {
    max-height: 660px;
    border-radius: 30px;
    box-shadow: 8px 10px 0 rgba(255, 228, 83, 0.9), var(--shadow);
  }

  .phone-preview img {
    border-radius: 22px;
  }

  .founder-photo {
    width: min(320px, 100%);
    margin: 0 auto;
  }

  .founder-title {
    font-size: 17px;
  }

  .contact-section {
    padding: 64px 16px;
  }

  .contact-card {
    padding: 22px;
  }

  .contact-card strong {
    font-size: 22px;
  }

  .consult-modal {
    padding: 16px;
  }

  .modal-panel {
    grid-template-columns: 1fr;
    gap: 20px;
    max-height: calc(100vh - 32px);
    overflow: auto;
    padding: 22px;
    border-radius: 16px;
    box-shadow: 6px 6px 0 var(--yellow), var(--shadow);
  }

  .modal-copy h2 {
    padding-right: 32px;
    font-size: 25px;
  }

  .modal-qrcode {
    width: min(240px, 100%);
    margin: 0 auto;
  }
}