yk-web/src/styles/theme.css

:root {
  --brand: #ff8a00;
  --brand-dark: #ea7600;
  --brand-soft: #fff2df;
  --brand-soft-2: #ffe4bf;
  --text: #202530;
  --muted: #687080;
  --line: rgba(255, 138, 0, 0.16);
  --card: #ffffff;
  --bg: #fffdf9;
  --warm: #fff7ec;
  --shadow: 0 18px 50px rgba(218, 112, 0, 0.12);
  --shadow-sm: 0 10px 28px rgba(31, 35, 44, 0.08);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --container: 1180px;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 14% 8%, rgba(255, 138, 0, 0.10), transparent 28%),
    radial-gradient(circle at 88% 20%, rgba(255, 196, 102, 0.16), transparent 32%),
    linear-gradient(180deg, #fffaf2 0%, #ffffff 38%, #fffdf9 100%);
  color: var(--text);
}

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

button {
  font: inherit;
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

.site-shell {
  min-height: 100vh;
  overflow: hidden;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 138, 0, 0.08);
}

.header-inner {
  height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 210px;
}

.brand-logo {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  object-fit: contain;
  box-shadow: 0 10px 22px rgba(255, 138, 0, 0.16);
}

.brand-copy,
.footer-brand span {
  display: grid;
  line-height: 1.1;
}

.brand-copy strong,
.footer-brand strong {
  font-size: 25px;
  letter-spacing: 0.04em;
}

.brand-copy em,
.footer-brand em {
  margin-top: 7px;
  color: var(--muted);
  font-style: normal;
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(22px, 3.4vw, 58px);
  font-size: 16px;
  color: #252a35;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 138, 0, 0.18);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: var(--brand);
}

.nav-link {
  position: relative;
  padding: 31px 0 28px;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--brand);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 16px;
  width: 32px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand), #ffb154);
  transform: translateX(-50%);
}

.hero-section {
  position: relative;
  padding: 64px 0 84px;
  background:
    linear-gradient(105deg, rgba(255, 255, 255, 0.96), rgba(255, 237, 210, 0.78) 52%, rgba(255, 255, 255, 0.94)),
    radial-gradient(circle at 68% 40%, rgba(255, 138, 0, 0.16), transparent 28%);
  overflow: hidden;
}

.hero-section::after {
  content: "";
  position: absolute;
  right: -180px;
  bottom: -190px;
  width: 650px;
  height: 360px;
  border-radius: 50%;
  border: 24px solid rgba(255, 138, 0, 0.26);
  transform: rotate(-12deg);
}

.hero-bg-orb {
  position: absolute;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 138, 0, 0.28), rgba(255, 255, 255, 0.1));
  filter: blur(2px);
}

.hero-bg-orb--left {
  width: 110px;
  height: 110px;
  left: 48%;
  top: 35%;
}

.hero-bg-orb--right {
  width: 180px;
  height: 180px;
  right: 8%;
  top: 16%;
  opacity: 0.32;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  align-items: center;
  gap: 52px;
}

.hero-copy {
  max-width: 620px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  color: var(--brand-dark);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 3px;
  border-radius: 999px;
  background: var(--brand);
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(38px, 4.5vw, 58px);
  line-height: 1.22;
  letter-spacing: -0.04em;
  color: #171b23;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  margin-top: 24px;
  padding: 13px 34px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand), #ffad39);
  color: #fff;
  font-size: 24px;
  font-weight: 800;
  box-shadow: 0 16px 34px rgba(255, 138, 0, 0.24);
}

.glass-card {
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.intro-card {
  margin-top: 32px;
  padding: 26px 30px;
  border-radius: 20px;
}

.intro-card p {
  margin: 0;
  color: #424956;
  font-size: 17px;
  line-height: 2.05;
}

.hero-visual {
  position: relative;
  min-height: 458px;
  display: grid;
  place-items: center;
}

.hero-visual img {
  width: min(100%, 620px);
  height: auto;
  display: block;
  border-radius: 42px;
  filter: drop-shadow(0 28px 56px rgba(255, 138, 0, 0.14));
}

.float-card {
  position: absolute;
  display: grid;
  gap: 4px;
  padding: 14px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(16px);
}

.float-card span {
  color: var(--muted);
  font-size: 12px;
}

.float-card strong {
  color: var(--brand);
  font-size: 20px;
}

.float-card--heart {
  top: 62px;
  left: 34px;
}

.float-card--data {
  right: 28px;
  bottom: 68px;
}

.page-section {
  padding: 70px 0;
  background: #fff;
}

.page-section--compact {
  padding-top: 44px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 42px;
  text-align: center;
}

.section-title h2 {
  margin: 0;
  font-size: clamp(28px, 3vw, 40px);
  letter-spacing: -0.03em;
}

.section-title p {
  flex-basis: 100%;
  margin: 0;
  color: var(--muted);
}

.title-dots {
  display: inline-flex;
  gap: 8px;
}

.title-dots i {
  display: block;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--brand);
  box-shadow: 16px 0 0 rgba(255, 138, 0, 0.42);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.feature-card {
  overflow: hidden;
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 138, 0, 0.10);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover,
.solution-card:hover,
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 46px rgba(31, 35, 44, 0.10);
}

.feature-head {
  position: relative;
  display: grid;
  place-items: center;
  gap: 12px;
  padding: 28px 20px 24px;
  color: #fff;
  background: linear-gradient(180deg, var(--brand), #ff7900);
}

.feature-head::after {
  content: "";
  position: absolute;
  inset: auto -18px -22px -18px;
  height: 48px;
  border-radius: 50% 50% 0 0;
  background: #fff;
  opacity: 0.12;
}

.feature-icon {
  position: relative;
  z-index: 1;
  width: 72px;
  height: 72px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: var(--brand);
  background: #fff;
}

.feature-head h3 {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 21px;
}

.feature-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 22px 18px 24px;
  background: linear-gradient(180deg, #fff, #fffaf5);
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 36px;
  padding: 8px 13px;
  border-radius: 10px;
  background: linear-gradient(180deg, #fff, #fff5ec);
  color: #535b68;
  font-size: 14px;
  box-shadow: inset 0 0 0 1px rgba(255, 138, 0, 0.10);
}

.check-dot {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  color: #fff;
  background: var(--brand);
  font-size: 10px;
  font-weight: 800;
}

.solution-section {
  background: linear-gradient(180deg, #fff, #fffaf4 42%, #fff);
}

.solution-tabs {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(760px, 100%);
  min-height: 58px;
  margin: 0 auto 28px;
  padding: 6px;
  border-radius: 15px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 138, 0, 0.12);
}

.solution-tab {
  position: relative;
  z-index: 2;
  border: 0;
  background: transparent;
  color: #4e5664;
  font-weight: 800;
  cursor: pointer;
  border-radius: 12px;
  transition: color 0.2s ease;
}

.solution-tab.active {
  color: #fff;
}

.tab-indicator {
  position: absolute;
  z-index: 1;
  left: 6px;
  top: 6px;
  width: calc((100% - 12px) / 3);
  height: calc(100% - 12px);
  border-radius: 12px;
  background: linear-gradient(90deg, var(--brand), #ff9d22);
  box-shadow: 0 12px 24px rgba(255, 138, 0, 0.24);
  transition: transform 0.26s ease;
}

.solution-grid {
  display: grid;
  grid-template-columns: 1fr;
  width: min(760px, 100%);
  margin: 0 auto;
}

.solution-card {
  min-height: 286px;
  padding: 27px 24px 22px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 138, 0, 0.11);
  box-shadow: var(--shadow-sm);
  transition: all 0.22s ease;
}

.solution-card.active {
  border-color: rgba(255, 138, 0, 0.32);
  box-shadow: 0 22px 58px rgba(255, 138, 0, 0.16);
}

.solution-kicker {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
}

.solution-card h3 {
  margin: 0 0 14px;
  font-size: 21px;
}

.solution-points {
  margin: 0;
  padding-left: 20px;
  color: #424956;
  line-height: 1.9;
}

.solution-personal-text {
  margin: 0 0 40px;
  color: #424956;
  line-height: 1.9;
}

.solution-qr-row {
  margin-top: 18px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  color: #4e5664;
  font-size: 14px;
}

.qr-wrap {
  display: grid;
  justify-items: center;
  gap: 8px;
}

.qr-fake {
  position: relative;
  width: 94px;
  height: 94px;
  border: 7px solid #fff;
  background:
    linear-gradient(90deg, #111 10px, transparent 10px 16px, #111 16px 22px, transparent 22px 31px, #111 31px 38px, transparent 38px 47px, #111 47px 54px, transparent 54px 64px, #111 64px 72px, transparent 72px),
    linear-gradient(0deg, transparent 8px, #111 8px 14px, transparent 14px 23px, #111 23px 30px, transparent 30px 39px, #111 39px 45px, transparent 45px 59px, #111 59px 66px, transparent 66px),
    #fff;
  background-blend-mode: multiply;
  box-shadow: inset 0 0 0 1px #111, 0 6px 14px rgba(0,0,0,.08);
}

.qr-corner {
  position: absolute;
  width: 26px;
  height: 26px;
  border: 5px solid #111;
  background: #fff;
}

.qr-corner::after {
  content: "";
  position: absolute;
  inset: 5px;
  background: #111;
}

.qr-corner.tl { left: 6px; top: 6px; }
.qr-corner.tr { right: 6px; top: 6px; }
.qr-corner.bl { left: 6px; bottom: 6px; }

.qr-label {
  max-width: 118px;
  margin: 0;
  color: #66707d;
  font-size: 12px;
  line-height: 1.3;
  text-align: center;
}

.qr-wrap--small .qr-fake {
  width: 78px;
  height: 78px;
  border-width: 6px;
}

.qr-wrap--small .qr-label {
  display: none;
}

.case-section {
  background: #fff;
}

.case-layout {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 46px;
  align-items: start;
}

.case-filter {
  display: grid;
  gap: 15px;
}

.case-filter-btn {
  min-height: 54px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid rgba(255, 138, 0, 0.18);
  background: #fff;
  color: #313843;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.2s ease;
}

.case-filter-btn.active,
.case-filter-btn:hover {
  border-color: transparent;
  background: linear-gradient(90deg, var(--brand), #ff9d22);
  color: #fff;
  box-shadow: 0 12px 24px rgba(255, 138, 0, 0.22);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.case-card {
  min-height: 86px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid rgba(31, 35, 44, 0.07);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 8px 26px rgba(31, 35, 44, 0.05);
  transition: all 0.2s ease;
}

.case-logo {
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: #fff;
  font-weight: 900;
  font-size: 18px;
}

.case-logo--blue { background: linear-gradient(135deg, #2e6bd4, #153d93); }
.case-logo--orange { background: linear-gradient(135deg, var(--brand), #ffb24b); }
.case-logo--red { background: linear-gradient(135deg, #e63e31, #bd1f18); }
.case-logo--cyan { background: linear-gradient(135deg, #26a4e8, #0874b8); }
.case-logo--green { background: linear-gradient(135deg, #10a774, #087d56); }
.case-logo--gray { background: linear-gradient(135deg, #b6bdc7, #88919f); }

.case-card p {
  margin: 0;
  color: #2f3540;
  line-height: 1.45;
  white-space: pre-line;
  font-size: 14px;
}

.contact-section {
  background: linear-gradient(180deg, #fff, #fff7ec);
}

.contact-card {
  width: min(960px, 100%);
  margin: 0 auto;
  padding: 34px 40px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 138, 0, 0.15);
  box-shadow: var(--shadow);
}

.address-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 20px;
  margin-bottom: 28px;
}

.address-icon {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
}

.contact-manager-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.manager-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 26px;
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.manager-copy {
  display: flex;
  align-items: center;
  gap: 14px;
}

.manager-copy p {
  margin: 0;
  color: #3d4552;
  line-height: 1.7;
}

.manager-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 20px;
}

.site-footer {
  background: #f6f7f9;
  border-top: 1px solid rgba(31, 35, 44, 0.06);
}

.footer-inner {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: #8a929f;
  font-size: 14px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.footer-brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
}

.footer-brand strong {
  font-size: 18px;
}

@media (max-width: 1100px) {
  .nav-links {
    gap: 20px;
    font-size: 14px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-copy {
    max-width: none;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .case-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .container {
    width: min(100% - 28px, var(--container));
  }
  .site-header {
    position: static;
  }
  .header-inner {
    height: auto;
    padding: 16px 0;
    flex-wrap: wrap;
    gap: 12px;
  }
  .brand {
    min-width: 0;
  }
  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }
  .nav-links {
    width: 100%;
    display: none;
    padding: 6px;
    border-radius: 15px;
    background: #fff;
    border: 1px solid rgba(255, 138, 0, 0.12);
    box-shadow: var(--shadow-sm);
  }
  .nav-links.open {
    display: grid;
    gap: 2px;
  }
  .nav-link {
    padding: 12px 14px;
    border-radius: 10px;
  }
  .nav-link.active::after {
    left: 14px;
    bottom: 8px;
    width: 22px;
    transform: none;
  }
  .hero-section {
    padding: 44px 0 60px;
  }
  .hero-badge {
    font-size: 18px;
    padding: 11px 22px;
  }
  .intro-card {
    padding: 20px;
  }
  .intro-card p {
    font-size: 15px;
  }
  .hero-visual {
    min-height: auto;
  }
  .float-card {
    display: none;
  }
  .feature-grid,
  .contact-manager-grid {
    grid-template-columns: 1fr;
  }
  .solution-tabs {
    grid-template-columns: repeat(3, 1fr);
    min-height: 50px;
    padding: 5px;
  }
  .solution-tab {
    min-height: 40px;
    padding: 0 6px;
    font-size: 13px;
    line-height: 1.25;
  }
  .tab-indicator {
    left: 5px;
    top: 5px;
    width: calc((100% - 10px) / 3);
    height: calc(100% - 10px);
  }
  .case-layout {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .case-filter {
    display: flex;
    overflow-x: auto;
    padding-bottom: 4px;
  }
  .case-filter-btn {
    white-space: nowrap;
    min-width: 136px;
  }
  .contact-card {
    padding: 24px 18px;
  }
  .manager-card {
    align-items: flex-start;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 0;
  }
}

@media (max-width: 540px) {
  .brand-copy strong {
    font-size: 22px;
  }
  .brand-logo {
    width: 46px;
    height: 46px;
  }
  .hero-copy h1 {
    font-size: 31px;
  }
  .section-title {
    gap: 12px;
    margin-bottom: 28px;
  }
  .title-dots {
    display: none;
  }
  .case-grid {
    grid-template-columns: 1fr;
  }
  .solution-qr-row,
  .manager-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .address-row {
    justify-content: flex-start;
    font-size: 17px;
  }
}