:root {
  color-scheme: light;
  --blue: #1677ff;
  --blue-deep: #0758cf;
  --blue-soft: #eaf3ff;
  --ink: #20242c;
  --muted: #626a78;
  --line: #dfe6ef;
  --soft: #f5f8fc;
  --pink: #ff9dca;
  --white: #fff;
  font-family: Inter, Arial, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body { margin: 0; background: var(--white); color: var(--ink); font-size: 16px; line-height: 1.68; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, dl, dd { margin-top: 0; }
:focus-visible { outline: 3px solid var(--pink); outline-offset: 4px; }
.skip-link { position: absolute; top: -60px; left: 18px; z-index: 1000; padding: 9px 16px; background: #fff; color: #000; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid rgba(22, 119, 255, .13); background: rgba(255,255,255,.93); backdrop-filter: blur(18px); }
.header-inner { width: min(100%, 1500px); min-height: 84px; margin: auto; padding: 12px clamp(22px,4vw,66px); display: flex; align-items: center; justify-content: space-between; gap: 26px; }
.brand { width: 208px; flex: 0 0 auto; }
.brand img { width: 100%; height: auto; }
.main-nav { display: flex; align-items: center; gap: clamp(18px,2.3vw,38px); font-size: 14px; font-weight: 750; white-space: nowrap; }
.main-nav a { transition: color .2s ease; }
.main-nav a:hover { color: var(--blue); }
.main-nav .nav-contact { padding: 10px 16px; color: #fff; background: var(--blue); }
.main-nav .nav-contact:hover { color: #fff; background: var(--blue-deep); }

.hero { overflow: hidden; }
.hero-main { width: min(100%, 1500px); min-height: 680px; margin: auto; padding: 60px clamp(22px,4vw,66px) 70px; display: grid; grid-template-columns: minmax(0,1.03fr) minmax(0,.97fr); align-items: center; gap: 34px; }
.hero-content { position: relative; z-index: 2; }
.eyebrow, .section-marker { display: flex; align-items: center; gap: 14px; color: var(--blue); font-size: 12px; line-height: 1.3; font-weight: 850; letter-spacing: .14em; }
.eyebrow-line { width: 34px; height: 2px; background: currentColor; }
.hero h1 { margin: 28px 0 26px; font-size: clamp(76px,8.2vw,134px); font-weight: 950; line-height: 1.04; letter-spacing: -.085em; white-space: nowrap; }
.hero h1 em { color: var(--blue); font-style: normal; }
.hero-copy { max-width: 610px; margin-bottom: 34px; color: #505966; font-size: clamp(17px,1.5vw,21px); line-height: 1.86; }
.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.button { min-height: 56px; padding: 0 24px; display: inline-flex; align-items: center; justify-content: center; gap: 30px; border: 1px solid var(--blue); font-size: 15px; font-weight: 850; transition: transform .2s ease, background .2s ease, color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--blue); color: #fff; }
.button-primary:hover { background: var(--blue-deep); }
.button-secondary { color: var(--blue); background: #fff; }
.button-secondary:hover { background: var(--blue-soft); }
.hero-visual { position: relative; isolation: isolate; min-height: 540px; display: grid; place-items: center; overflow: hidden; background: radial-gradient(circle at 52% 45%, #d7e9ff 0 25%, #edf5ff 26% 51%, #f8fbff 52% 69%, #fff 70%); }
.hero-visual img { position: relative; z-index: 3; width: min(96%, 630px); height: auto; filter: drop-shadow(0 24px 25px rgba(0,66,165,.17)); transform: rotate(-7deg); }
.hero-visual-word { position: absolute; z-index: 0; right: 5%; top: 6%; color: #dcecff; font-size: clamp(67px,7vw,115px); font-weight: 950; line-height: .84; letter-spacing: -.095em; text-align: right; }
.hero-grid { position: absolute; inset: 7%; z-index: 0; opacity: .38; background-image: linear-gradient(rgba(22,119,255,.14) 1px, transparent 1px), linear-gradient(90deg, rgba(22,119,255,.14) 1px, transparent 1px); background-size: 34px 34px; mask-image: radial-gradient(circle, #000 10%, transparent 73%); }
.sparkle { position: absolute; z-index: 5; color: var(--blue); line-height: 1; }
.sparkle-one { top: 13%; left: 10%; font-size: 36px; }
.sparkle-two { right: 9%; bottom: 14%; font-size: 54px; }
.visual-note { position: absolute; z-index: 5; left: 6%; bottom: 6%; padding: 8px 11px; color: var(--blue); background: rgba(255,255,255,.82); border: 1px solid rgba(22,119,255,.3); font-size: 11px; font-weight: 850; letter-spacing: .08em; }

.proof-strip { display: grid; grid-template-columns: repeat(4,1fr); background: var(--blue); color: #fff; }
.proof-strip div { position: relative; min-height: 105px; padding: 22px clamp(16px,2.3vw,38px); display: flex; flex-direction: column; justify-content: center; }
.proof-strip div + div::before { content: ""; position: absolute; left: 0; top: 23%; width: 1px; height: 54%; background: rgba(255,255,255,.28); }
.proof-strip strong { display: block; font-size: clamp(20px,2vw,29px); line-height: 1.25; letter-spacing: -.04em; }
.proof-strip span { margin-top: 4px; color: rgba(255,255,255,.8); font-size: 13px; }

.section { width: min(100%, 1500px); margin: auto; padding: 118px clamp(22px,4vw,66px); }
.section-marker { gap: 18px; }
.section-marker span:first-child { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid currentColor; border-radius: 50%; font-size: 10px; letter-spacing: 0; }
.about-grid { margin-top: 54px; display: grid; grid-template-columns: 1.12fr .88fr; align-items: start; gap: clamp(50px,7vw,120px); }
.about-grid h2, .section-heading h2, .network-content h2 { font-size: clamp(40px,4vw,66px); line-height: 1.24; letter-spacing: -.055em; font-weight: 930; }
.about-grid h2 span { color: var(--blue); }
.about-copy { max-width: 560px; padding-top: 8px; color: var(--muted); font-size: 18px; line-height: 1.94; }
.about-copy p + p { margin-top: 21px; }

.services-section { padding-top: 52px; }
.section-heading { margin: 46px 0 44px; display: flex; align-items: end; justify-content: space-between; gap: 40px; }
.section-heading h2 { margin-bottom: 0; }
.section-heading p { max-width: 360px; margin: 0 0 8px; color: var(--muted); font-size: 17px; }
.service-list { border-top: 1px solid var(--line); }
.service-item { min-height: 136px; display: grid; grid-template-columns: 74px minmax(240px,.78fr) minmax(320px,1fr) 38px; align-items: center; gap: 24px; border-bottom: 1px solid var(--line); }
.service-number { color: var(--blue); font-size: 14px; font-weight: 850; }
.service-item h3 { margin: 0; font-size: clamp(23px,2.2vw,31px); font-weight: 880; letter-spacing: -.04em; }
.service-item p { max-width: 600px; margin: 0; color: var(--muted); }
.service-symbol { color: var(--blue); font-size: 25px; text-align: right; }

.feature-case { min-height: 740px; display: grid; grid-template-columns: 1.07fr .93fr; background: #0c58d4; color: #fff; }
.feature-media { position: relative; min-height: 650px; overflow: hidden; }
.feature-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 65%, rgba(12,88,212,.6)); pointer-events: none; }
.feature-media img { width: 100%; height: 100%; object-fit: cover; }
.feature-tag { position: absolute; z-index: 2; left: clamp(22px,4vw,64px); bottom: 34px; padding: 10px 14px; color: var(--blue); background: #fff; font-size: 13px; font-weight: 850; }
.feature-copy { padding: 88px clamp(28px,5vw,84px); display: flex; flex-direction: column; justify-content: center; }
.section-marker-light { color: #fff; }
.feature-copy h2 { margin: 40px 0 24px; font-size: clamp(47px,5vw,76px); line-height: 1.13; letter-spacing: -.06em; font-weight: 930; }
.feature-copy > p { max-width: 640px; color: rgba(255,255,255,.82); font-size: 17px; }
.case-stats { margin: 32px 0 26px; display: grid; grid-template-columns: repeat(2,1fr); gap: 0; border-top: 1px solid rgba(255,255,255,.3); border-left: 1px solid rgba(255,255,255,.3); }
.case-stats div { min-height: 110px; padding: 18px 20px; border-right: 1px solid rgba(255,255,255,.3); border-bottom: 1px solid rgba(255,255,255,.3); }
.case-stats dt { font-size: clamp(30px,3.2vw,50px); line-height: 1.1; font-weight: 900; letter-spacing: -.05em; }
.case-stats dd { margin: 5px 0 0; color: rgba(255,255,255,.72); font-size: 13px; }
.feature-copy .case-note { margin-bottom: 0; font-size: 14px; line-height: 1.75; }

.work-section { padding-top: 118px; padding-bottom: 142px; }
.case-grid { display: grid; grid-template-columns: repeat(12,1fr); gap: 58px 28px; }
.case { grid-column: span 5; min-width: 0; }
.case-wide { grid-column: span 7; }
.case:nth-child(4) { grid-column: span 7; }
.case-image { aspect-ratio: 1.45; overflow: hidden; background: var(--blue-soft); }
.case-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case:hover .case-image img { transform: scale(1.035); }
.case-image-portrait img { object-position: 50% 44%; }
.case-copy { padding: 21px 5px 0; }
.case-type { display: block; margin-bottom: 10px; color: var(--blue); font-size: 13px; font-weight: 850; letter-spacing: .04em; }
.case h3 { margin: 0 0 11px; font-size: clamp(24px,2.35vw,34px); line-height: 1.34; font-weight: 880; letter-spacing: -.04em; }
.case p { max-width: 620px; margin: 0; color: var(--muted); }

.approach-section { color: #fff; background: var(--blue); overflow: hidden; }
.approach-inner { width: min(100%, 1500px); margin: auto; padding: 102px clamp(22px,4vw,66px) 112px; }
.approach-heading { margin: 44px 0 66px; display: flex; align-items: end; justify-content: space-between; gap: 40px; }
.approach-section h2 { margin: 0; max-width: 970px; font-size: clamp(42px,4.8vw,74px); line-height: 1.2; letter-spacing: -.06em; font-weight: 930; }
.approach-heading p { max-width: 320px; margin: 0 0 10px; color: rgba(255,255,255,.76); }
.approach-steps { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4,1fr); list-style: none; border-top: 1px solid rgba(255,255,255,.42); }
.approach-steps li { min-height: 160px; padding: 25px 24px 8px 0; border-right: 1px solid rgba(255,255,255,.28); }
.approach-steps li + li { padding-left: 24px; }
.approach-steps li:last-child { border-right: 0; }
.approach-steps span { display: block; margin-bottom: 27px; font-size: 13px; font-weight: 850; letter-spacing: .09em; }
.approach-steps strong { display: block; max-width: 250px; font-size: 18px; line-height: 1.55; }

.network-section { display: grid; grid-template-columns: .88fr 1.12fr; gap: clamp(48px,7vw,110px); align-items: center; }
.network-media { min-height: 620px; overflow: hidden; background: var(--blue-soft); }
.network-media img { width: 100%; height: 100%; min-height: 620px; object-fit: cover; }
.network-content h2 { margin: 43px 0 24px; }
.network-lead { max-width: 680px; color: var(--muted); font-size: 18px; line-height: 1.9; }
.network-lists { margin-top: 36px; display: grid; grid-template-columns: repeat(2,1fr); gap: 28px; border-top: 1px solid var(--line); }
.network-lists div { padding-top: 24px; }
.network-lists h3 { margin-bottom: 11px; color: var(--blue); font-size: 19px; }
.network-lists p { margin-bottom: 0; color: var(--muted); }

.contact-section { background: var(--soft); }
.contact-inner { width: min(100%, 1500px); margin: auto; padding: 112px clamp(22px,4vw,66px) 124px; }
.contact-grid { margin-top: 47px; display: grid; grid-template-columns: 1fr 1fr; gap: clamp(50px,8vw,130px); align-items: end; }
.contact-section h2 { margin: 0; font-size: clamp(50px,6vw,90px); line-height: 1.12; letter-spacing: -.07em; font-weight: 930; }
.contact-copy { padding-bottom: 10px; }
.contact-copy p { max-width: 570px; margin-bottom: 28px; color: var(--muted); font-size: 18px; }
.contact-email { display: inline-flex; align-items: center; gap: 18px; padding-bottom: 5px; border-bottom: 3px solid var(--blue); color: var(--blue); font-size: clamp(25px,3.4vw,49px); font-weight: 850; line-height: 1.25; letter-spacing: -.04em; overflow-wrap: anywhere; }
.contact-email:hover { color: var(--blue-deep); border-color: var(--blue-deep); }
.contact-email span { font-size: .65em; }
.contact-domain { display: block; margin-top: 20px; color: #8991a0; font-size: 14px; letter-spacing: .04em; }

.site-footer { color: #fff; background: #202938; }
.footer-inner { width: min(100%, 1500px); margin: auto; padding: 42px clamp(22px,4vw,66px); display: flex; align-items: end; justify-content: space-between; gap: 36px; }
.footer-brand { display: flex; flex-direction: column; gap: 8px; }
.footer-brand strong { color: #fff; font-size: 27px; font-style: italic; letter-spacing: -.05em; }
.footer-inner span { color: #c7d0dd; font-size: 13px; }
.footer-meta { display: flex; flex-direction: column; align-items: end; gap: 3px; text-align: right; }

@media (max-width: 1080px) {
  .hero-main { min-height: 590px; }
  .hero h1 { font-size: clamp(70px,8vw,98px); }
  .hero-visual { min-height: 470px; }
  .service-item { grid-template-columns: 50px minmax(220px,.8fr) minmax(250px,1fr) 24px; gap: 16px; }
  .feature-case { grid-template-columns: 1fr 1fr; }
  .feature-copy { padding-inline: 44px; }
  .approach-heading { display: block; }
  .approach-heading p { margin-top: 22px; }
}

@media (max-width: 780px) {
  html { scroll-padding-top: 74px; }
  .header-inner { min-height: 72px; padding: 10px 20px; }
  .brand { width: 154px; }
  .main-nav { gap: 12px; font-size: 13px; }
  .main-nav a:nth-child(3) { display: none; }
  .main-nav .nav-contact { padding: 8px 11px; }
  .hero-main { grid-template-columns: 1fr; padding: 56px 22px 30px; gap: 20px; }
  .hero h1 { margin: 24px 0; font-size: clamp(63px,14vw,94px); }
  .hero-copy { font-size: 17px; line-height: 1.8; }
  .hero-visual { min-height: 360px; }
  .hero-visual img { width: min(84%,470px); }
  .hero-visual-word { font-size: 85px; }
  .proof-strip { grid-template-columns: repeat(2,1fr); }
  .proof-strip div { min-height: 94px; }
  .proof-strip div:nth-child(3)::before { display: none; }
  .proof-strip div:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.27); }
  .section { padding: 82px 22px; }
  .about-grid { grid-template-columns: 1fr; gap: 16px; margin-top: 36px; }
  .about-grid h2, .section-heading h2, .network-content h2 { font-size: clamp(38px,8vw,56px); }
  .about-copy, .network-lead { font-size: 16px; }
  .services-section { padding-top: 26px; }
  .section-heading { display: block; margin: 34px 0; }
  .section-heading p { margin-top: 16px; }
  .service-item { min-height: 0; padding: 24px 0; grid-template-columns: 40px 1fr 20px; gap: 12px; }
  .service-item h3 { font-size: 23px; }
  .service-item p { grid-column: 2/3; }
  .service-symbol { grid-column: 3; grid-row: 1/3; font-size: 18px; }
  .feature-case { grid-template-columns: 1fr; }
  .feature-media { min-height: 440px; }
  .feature-media::after { background: linear-gradient(0deg, rgba(12,88,212,.48), transparent 45%); }
  .feature-copy { padding: 70px 22px 78px; }
  .feature-copy h2 { font-size: clamp(43px,11vw,62px); }
  .work-section { padding-top: 82px; padding-bottom: 88px; }
  .case-grid { grid-template-columns: 1fr; gap: 42px; }
  .case, .case-wide, .case:nth-child(4) { grid-column: auto; }
  .case h3 { font-size: 26px; }
  .approach-inner { padding: 78px 22px 82px; }
  .approach-section h2 { font-size: clamp(40px,9vw,60px); }
  .approach-heading { margin: 38px 0 42px; }
  .approach-steps { grid-template-columns: repeat(2,1fr); }
  .approach-steps li { min-height: 140px; padding: 19px 16px 14px 0; border-bottom: 1px solid rgba(255,255,255,.28); }
  .approach-steps li:nth-child(2) { border-right: 0; }
  .approach-steps li:nth-child(3) { padding-left: 0; border-bottom: 0; }
  .approach-steps li:nth-child(4) { border-bottom: 0; }
  .approach-steps span { margin-bottom: 14px; }
  .approach-steps strong { font-size: 16px; }
  .network-section { grid-template-columns: 1fr; gap: 42px; }
  .network-media, .network-media img { min-height: 420px; }
  .network-lists { gap: 22px; }
  .contact-inner { padding: 82px 22px 90px; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; margin-top: 37px; }
  .contact-copy p { font-size: 16px; }
  .footer-inner { display: block; padding: 36px 22px; }
  .footer-meta { align-items: start; margin-top: 25px; text-align: left; }
}

@media (max-width: 460px) {
  .brand { width: 124px; }
  .main-nav { gap: 9px; font-size: 12px; }
  .main-nav a:first-child { display: none; }
  .hero h1 { font-size: clamp(56px,16vw,74px); }
  .hero-actions { gap: 8px; }
  .button { min-height: 52px; padding: 0 15px; gap: 12px; font-size: 14px; }
  .hero-visual { min-height: 310px; }
  .hero-visual-word { font-size: 66px; }
  .visual-note { display: none; }
  .proof-strip strong { font-size: 20px; }
  .case-stats div { min-height: 96px; padding: 15px; }
  .approach-steps { grid-template-columns: 1fr; }
  .approach-steps li, .approach-steps li + li, .approach-steps li:nth-child(3) { min-height: 0; padding: 17px 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.28); }
  .approach-steps li:last-child { border-bottom: 0; }
  .approach-steps span { margin-bottom: 4px; }
  .network-lists { grid-template-columns: 1fr; gap: 4px; }
  .contact-email { font-size: clamp(18px,5.2vw,22px); gap: 8px; white-space: nowrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button, .case-image img, .main-nav a { transition: none; }
}