:root {
  --sand: #f1e7d0;
  --sand-light: #faf5e8;
  --paper: #f7efdd;
  --espresso: #291810;
  --brown: #4a2a1c;
  --cobalt: #1649d8;
  --cobalt-dark: #0d35ab;
  --white: #fffdf8;
  --line: rgba(41, 24, 16, 0.32);
  --muted: #6c5b50;
  --radius: 3px;
  --page: min(1440px, calc(100% - 64px));
  --display: ui-rounded, "Arial Rounded MT Bold", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  --body: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--espresso);
  background-color: var(--sand);
  background-image:
    radial-gradient(circle at 30% 20%, rgba(41, 24, 16, 0.035) 0 0.7px, transparent 0.9px),
    radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.38) 0 0.8px, transparent 1px);
  background-size: 9px 9px, 13px 13px;
  font-family: var(--body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

:focus-visible {
  outline: 3px solid var(--cobalt);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 20px;
  top: 16px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--espresso);
  color: var(--white);
  transform: translateY(-150%);
  transition: transform 180ms ease;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  width: var(--page);
  height: 88px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(280px, 1fr) auto;
  align-items: center;
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 100;
}

.brand { display: inline-flex; align-items: center; gap: 14px; width: fit-content; }
.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 2px solid var(--espresso);
  background: var(--sand-light);
  transform: rotate(2deg);
}
.brand-mark i:first-child { background: var(--cobalt); border-right: 2px solid var(--espresso); }
.brand-mark i:last-child { position: relative; }
.brand-mark i:last-child::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  right: 4px;
  bottom: 4px;
  border-radius: 50%;
  background: var(--espresso);
}
.brand-name { font-family: var(--display); font-size: 16px; font-weight: 800; letter-spacing: 0.02em; }

.site-nav { display: flex; align-items: center; gap: 30px; font-size: 14px; font-weight: 700; }
.site-nav a:not(.nav-cta) { position: relative; padding: 12px 0; }
.site-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 6px;
  height: 2px;
  background: var(--cobalt);
  transition: right 180ms ease;
}
.site-nav a:hover::after { right: 0; }
.nav-cta {
  padding: 11px 16px;
  border: 1.5px solid var(--espresso);
  background: var(--cobalt);
  color: var(--white);
  box-shadow: 4px 4px 0 var(--espresso);
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.nav-cta:hover { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--espresso); }
.menu-toggle { display: none; }

.hero {
  width: var(--page);
  min-height: 720px;
  margin: 0 auto;
  padding: 86px 0 70px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(400px, 0.85fr);
  gap: 7vw;
  align-items: center;
  position: relative;
}

.hero-copy { position: relative; z-index: 2; }
.eyebrow, .section-kicker {
  margin: 0 0 26px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
}
.eyebrow { display: flex; align-items: center; gap: 10px; }
.eyebrow-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--cobalt); box-shadow: 0 0 0 5px rgba(22, 73, 216, 0.12); }
.hero-title {
  margin: 0;
  font: 900 clamp(56px, 7vw, 108px) / 0.98 var(--display);
  letter-spacing: -0.065em;
}
.title-line { display: block; width: fit-content; }
.title-accent { color: var(--cobalt); position: relative; }
.title-accent span { position: relative; z-index: 1; }
.title-accent i {
  position: absolute;
  left: -10px;
  right: -14px;
  bottom: 4px;
  height: 20%;
  border: 2px solid var(--espresso);
  background: #ffc83d;
  z-index: 0;
  transform: rotate(-1deg) scaleX(0);
  transform-origin: left;
  animation: swipe-in 800ms 500ms cubic-bezier(.2,.8,.2,1) forwards;
}
.hero-intro { max-width: 630px; margin: 36px 0 0; color: var(--brown); font-size: clamp(16px, 1.45vw, 20px); line-height: 1.8; }
.hero-actions { display: flex; align-items: center; gap: 30px; margin-top: 38px; }
.button {
  min-height: 52px;
  padding: 13px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  border: 2px solid var(--espresso);
  font-weight: 800;
  box-shadow: 5px 5px 0 var(--espresso);
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}
.button:hover { transform: translate(2px, 2px); box-shadow: 3px 3px 0 var(--espresso); }
.button-primary { background: var(--espresso); color: var(--white); box-shadow: 5px 5px 0 var(--cobalt); }
.button-primary:hover { box-shadow: 3px 3px 0 var(--cobalt); }
.text-link { font-weight: 800; border-bottom: 2px solid var(--espresso); padding: 10px 0 4px; }
.text-link span { display: inline-block; margin-left: 8px; transition: transform 160ms ease; }
.text-link:hover span { transform: translateX(4px); }

.hero-visual {
  border: 2px solid var(--espresso);
  background: var(--paper);
  box-shadow: 12px 12px 0 var(--espresso);
  transform: rotate(1.25deg);
}
.visual-topline { min-height: 48px; padding: 10px 14px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1.5px solid var(--espresso); font-size: 12px; font-weight: 800; }
.status { display: flex; align-items: center; gap: 7px; }
.status i { width: 8px; height: 8px; border-radius: 50%; background: #15a95b; box-shadow: 0 0 0 3px rgba(21,169,91,.14); }
.visual-stage { min-height: 335px; padding: 38px; position: relative; overflow: hidden; background: var(--cobalt); color: var(--white); border-bottom: 2px solid var(--espresso); }
.visual-stage p { margin: 0; position: relative; z-index: 2; display: flex; align-items: baseline; gap: 14px; font-family: var(--display); }
.visual-stage p + p { margin-top: 5px; margin-left: 52px; }
.visual-stage p span { font-size: 14px; }
.visual-stage p strong { font-size: clamp(54px, 5vw, 76px); line-height: 1.1; letter-spacing: -0.06em; }
.shape { position: absolute; }
.shape-ring { width: 144px; height: 144px; right: 32px; bottom: 30px; border: 24px solid #ffc83d; border-radius: 50%; }
.shape-dot { width: 46px; height: 46px; right: 133px; bottom: 128px; border-radius: 50%; background: var(--espresso); }
.shape-arrow { right: 27px; top: 22px; color: var(--espresso); font: 900 78px/1 var(--display); transform: rotate(-6deg); }
.visual-steps { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); }
.visual-steps li { min-height: 90px; padding: 16px; display: flex; flex-direction: column; justify-content: space-between; border-right: 1.5px solid var(--espresso); }
.visual-steps li:last-child { border: 0; }
.visual-steps span { color: var(--muted); font-size: 11px; }
.visual-steps strong { font-size: 13px; }
.hero-index { position: absolute; left: 0; bottom: 18px; display: flex; align-items: center; gap: 8px; font-size: 11px; font-weight: 800; }
.hero-index i { display: block; width: 78px; height: 1px; background: var(--espresso); position: relative; }
.hero-index i::after { content: ""; position: absolute; left: 25%; top: -2px; width: 5px; height: 5px; border-radius: 50%; background: var(--cobalt); }

.capability-strip {
  min-height: 76px;
  padding: 20px max(32px, calc((100vw - 1440px) / 2));
  border-block: 2px solid var(--espresso);
  background: var(--espresso);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 24px;
}
.capability-strip p { margin: 0; font-family: var(--display); font-weight: 800; letter-spacing: 0.08em; white-space: nowrap; }
.capability-strip i { width: 8px; height: 8px; border: 2px solid #ffc83d; transform: rotate(45deg); }

.section { width: var(--page); margin: 0 auto; padding: 130px 0; }
.section-kicker { color: var(--cobalt); }
.section-heading { display: grid; grid-template-columns: 1fr minmax(300px, 0.45fr); gap: 8vw; align-items: end; margin-bottom: 64px; }
.section-heading h2, .approach-intro h2, .principles-title h2, .contact h2 {
  margin: 0;
  font: 900 clamp(44px, 5vw, 76px) / 1.08 var(--display);
  letter-spacing: -0.055em;
}
.section-heading > p, .approach-intro > p { margin: 0 0 8px; color: var(--muted); font-size: 17px; line-height: 1.85; }

.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); border: 1px solid var(--espresso); }
.service-card { min-height: 440px; padding: 34px; position: relative; background: rgba(250,245,232,.58); border: 1px solid var(--espresso); }
.service-card-featured { background: #ffc83d; }
.service-card-dark { background: var(--espresso); color: var(--white); }
.card-number { font: 800 12px/1 var(--display); letter-spacing: .12em; }
.card-symbol { position: absolute; top: 34px; right: 34px; width: 74px; height: 74px; }
.symbol-grid { display: grid; grid-template-columns: 1fr 1fr; border: 2px solid currentColor; transform: rotate(5deg); }
.symbol-grid i { border: 1px solid currentColor; }
.symbol-grid i:nth-child(1), .symbol-grid i:nth-child(4) { background: var(--cobalt); }
.symbol-orbit { border: 2px solid var(--espresso); border-radius: 50%; }
.symbol-orbit i { position: absolute; width: 24px; height: 24px; right: -2px; top: 5px; border-radius: 50%; background: var(--cobalt); border: 2px solid var(--espresso); }
.symbol-code::before, .symbol-code::after { position: absolute; top: 0; font: 900 60px/1 var(--display); }
.symbol-code::before { content: "‹"; left: 0; }
.symbol-code::after { content: "›"; right: 0; color: var(--cobalt); }
.symbol-code i:first-child { position: absolute; left: 34px; width: 3px; height: 70px; background: var(--espresso); transform: rotate(18deg); }
.symbol-pulse { border: 2px solid var(--white); border-radius: 50%; display: grid; place-items: center; }
.symbol-pulse i { width: 15px; height: 15px; background: #ffc83d; border-radius: 50%; box-shadow: 0 0 0 12px var(--cobalt); }
.service-card h3 { margin: 100px 0 14px; font: 900 clamp(27px, 2.6vw, 38px)/1.15 var(--display); letter-spacing: -.04em; }
.service-card > p { max-width: 510px; min-height: 62px; margin: 0; color: var(--muted); }
.service-card-dark > p { color: #d9cfc3; }
.service-card ul { list-style: none; margin: 31px 0 0; padding: 20px 0 0; display: flex; flex-wrap: wrap; gap: 9px; border-top: 1px solid currentColor; }
.service-card li { padding: 6px 10px; border: 1px solid currentColor; font-size: 12px; font-weight: 700; }

.approach { display: grid; grid-template-columns: minmax(300px, .65fr) 1fr; gap: 9vw; border-top: 1px solid var(--line); }
.approach-intro { position: sticky; top: 40px; align-self: start; }
.approach-intro > p { max-width: 430px; margin-top: 30px; }
.approach-note { margin-top: 48px; display: flex; gap: 15px; align-items: flex-start; }
.approach-note > span { color: var(--cobalt); font: 900 35px/1 var(--display); }
.approach-note p { margin: 0; font-size: 13px; font-weight: 800; line-height: 1.6; }
.process-list { margin: 0; padding: 0; list-style: none; border-top: 2px solid var(--espresso); }
.process-item { min-height: 170px; display: grid; grid-template-columns: 55px 1fr 40px; gap: 20px; align-items: center; border-bottom: 1px solid var(--line); }
.process-num { align-self: start; margin-top: 32px; color: var(--cobalt); font-size: 12px; font-weight: 800; }
.process-item h3 { margin: 0 0 8px; font: 900 clamp(22px, 2.2vw, 31px)/1.2 var(--display); letter-spacing: -.03em; }
.process-item p { margin: 0; max-width: 590px; color: var(--muted); font-size: 15px; }
.process-mark { justify-self: end; color: var(--cobalt); font-size: 20px; }

.scenarios { border-top: 1px solid var(--line); }
.tab-list { display: grid; grid-template-columns: repeat(3, 1fr); border: 2px solid var(--espresso); border-bottom: 0; }
.tab-list button { min-height: 64px; border: 0; border-right: 1px solid var(--espresso); background: transparent; cursor: pointer; font-weight: 800; }
.tab-list button:last-child { border-right: 0; }
.tab-list button[aria-selected="true"] { background: var(--cobalt); color: var(--white); }
.tab-panel { min-height: 370px; padding: clamp(35px, 5vw, 70px); border: 2px solid var(--espresso); background: var(--sand-light); display: grid; grid-template-columns: 1fr .65fr; gap: 8vw; align-items: center; box-shadow: 9px 9px 0 var(--espresso); }
.tab-panel[hidden] { display: none; }
.panel-label { margin: 0 0 26px; color: var(--cobalt); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.tab-panel h3 { max-width: 710px; margin: 0; font: 900 clamp(31px, 3.7vw, 56px)/1.13 var(--display); letter-spacing: -.045em; }
.tab-panel > div > p:last-child { max-width: 650px; margin: 24px 0 0; color: var(--muted); }
.tab-panel ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--espresso); }
.tab-panel li { display: flex; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); font-weight: 800; }
.tab-panel li span { color: var(--cobalt); font-size: 11px; }

.principles { border-top: 1px solid var(--line); }
.principles-title h2 span { color: var(--cobalt); }
.principle-grid { margin-top: 64px; display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--espresso); }
.principle-card { min-height: 300px; padding: 32px; border: 1px solid var(--espresso); background: rgba(250,245,232,.5); }
.principle-card:nth-child(2) { transform: translateY(18px); background: #ffc83d; box-shadow: 6px 6px 0 var(--espresso); position: relative; z-index: 1; }
.principle-card > span { color: var(--cobalt); font-size: 12px; font-weight: 800; }
.principle-card h3 { margin: 90px 0 12px; font: 900 23px/1.25 var(--display); letter-spacing: -.03em; }
.principle-card p { margin: 0; color: var(--muted); font-size: 14px; }

.contact {
  width: 100%;
  min-height: 630px;
  padding: 110px max(32px, calc((100vw - 1440px) / 2));
  background: var(--cobalt);
  color: var(--white);
  border-top: 3px solid var(--espresso);
  position: relative;
  overflow: hidden;
}
.contact-copy { max-width: 850px; position: relative; z-index: 2; }
.contact .section-kicker { color: #ffc83d; }
.contact h2 { font-size: clamp(52px, 7vw, 105px); }
.contact h2 span { color: #ffc83d; }
.contact-copy > p:not(.section-kicker) { max-width: 680px; margin: 32px 0; color: #e4eaff; font-size: 17px; }
.button-light { background: var(--white); color: var(--espresso); box-shadow: 5px 5px 0 var(--espresso); }
.contact-orbit { position: absolute; width: 520px; height: 520px; right: -95px; top: 45px; border: 2px solid rgba(255,255,255,.65); border-radius: 50%; }
.contact-orbit::before { content: ""; position: absolute; inset: 80px; border: 2px solid rgba(255,255,255,.35); border-radius: 50%; }
.contact-orbit::after { content: ""; position: absolute; inset: 170px; background: #ffc83d; border: 2px solid var(--espresso); border-radius: 50%; box-shadow: 9px 9px 0 var(--espresso); }
.contact-orbit i { position: absolute; border-radius: 50%; background: var(--espresso); }
.contact-orbit i:nth-child(1) { width: 30px; height: 30px; left: 33px; top: 118px; }
.contact-orbit i:nth-child(2) { width: 18px; height: 18px; right: 115px; top: 1px; background: #ffc83d; }
.contact-orbit i:nth-child(3) { width: 42px; height: 42px; right: 18px; bottom: 105px; background: var(--white); }
.contact-stamp { position: absolute; right: 48px; bottom: 36px; display: flex; gap: 11px; align-items: center; font-size: 11px; font-weight: 800; letter-spacing: .15em; }
.contact-stamp i { width: 5px; height: 5px; background: #ffc83d; transform: rotate(45deg); }

.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity 620ms ease, transform 620ms cubic-bezier(.2,.8,.2,1); }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }
.title-line:nth-child(2) { transition-delay: 100ms; }

@keyframes swipe-in { to { transform: rotate(-1deg) scaleX(1); } }

@media (max-width: 980px) {
  :root { --page: calc(100% - 40px); }
  .site-header { height: 76px; }
  .menu-toggle { display: flex; gap: 10px; align-items: center; border: 0; background: none; padding: 10px 0; cursor: pointer; font-size: 13px; font-weight: 800; }
  .menu-icon { width: 26px; height: 18px; display: flex; flex-direction: column; justify-content: center; gap: 6px; }
  .menu-icon i { width: 100%; height: 2px; background: currentColor; transition: transform 180ms ease; }
  .menu-toggle[aria-expanded="true"] .menu-icon i:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-icon i:last-child { transform: translateY(-4px) rotate(-45deg); }
  .site-nav { display: none; position: absolute; top: 76px; left: 0; right: 0; padding: 18px; background: var(--sand-light); border: 2px solid var(--espresso); box-shadow: 7px 7px 0 var(--espresso); flex-direction: column; align-items: stretch; gap: 4px; }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 12px !important; }
  .nav-cta { margin-top: 6px; text-align: center; box-shadow: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 64px; padding: 70px 0 90px; }
  .hero-copy { max-width: 800px; }
  .hero-visual { width: min(620px, 94%); justify-self: end; }
  .hero-index { display: none; }
  .section { padding: 100px 0; }
  .section-heading { grid-template-columns: 1fr; gap: 28px; }
  .section-heading > p { max-width: 620px; }
  .approach { grid-template-columns: 1fr; gap: 60px; }
  .approach-intro { position: static; }
  .approach-intro > p { max-width: 660px; }
  .tab-panel { grid-template-columns: 1fr; gap: 40px; }
  .principle-card { min-height: 330px; }
  .contact-orbit { opacity: .38; right: -230px; }
}

@media (max-width: 680px) {
  :root { --page: calc(100% - 28px); }
  .site-header { height: 68px; }
  .brand { gap: 9px; }
  .brand-mark { width: 30px; height: 30px; }
  .brand-name { max-width: 180px; font-size: 12px; line-height: 1.25; }
  .menu-label { display: none; }
  .site-nav { top: 68px; }
  .hero { padding: 54px 0 74px; gap: 48px; }
  .eyebrow { margin-bottom: 20px; }
  .hero-title { font-size: clamp(47px, 15.4vw, 71px); line-height: 1.02; }
  .hero-intro { margin-top: 26px; font-size: 16px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 14px; margin-top: 30px; }
  .button { width: 100%; }
  .text-link { margin-left: 2px; }
  .hero-visual { width: calc(100% - 7px); box-shadow: 7px 7px 0 var(--espresso); }
  .visual-topline { min-height: 44px; }
  .visual-stage { min-height: 265px; padding: 28px 24px; }
  .visual-stage p strong { font-size: 48px; }
  .visual-stage p + p { margin-left: 34px; }
  .shape-ring { width: 110px; height: 110px; border-width: 18px; right: 19px; bottom: 24px; }
  .shape-dot { width: 36px; height: 36px; right: 91px; bottom: 101px; }
  .shape-arrow { right: 14px; top: 18px; font-size: 58px; }
  .visual-steps li { min-height: 82px; padding: 12px 8px; }
  .visual-steps strong { font-size: 11px; }
  .capability-strip { min-height: 66px; padding: 18px 16px; justify-content: flex-start; overflow: hidden; gap: 17px; }
  .capability-strip p { font-size: 12px; }
  .capability-strip p:nth-of-type(4), .capability-strip i:nth-of-type(3) { display: none; }
  .section { padding: 80px 0; }
  .section-heading { margin-bottom: 40px; }
  .section-heading h2, .approach-intro h2, .principles-title h2 { font-size: clamp(39px, 12vw, 56px); }
  .section-heading > p, .approach-intro > p { font-size: 15px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 395px; padding: 25px; }
  .card-symbol { top: 25px; right: 25px; width: 62px; height: 62px; }
  .symbol-code::before, .symbol-code::after { font-size: 51px; }
  .symbol-code i:first-child { left: 30px; height: 60px; }
  .service-card h3 { margin-top: 90px; }
  .process-item { min-height: 180px; grid-template-columns: 36px 1fr 18px; gap: 12px; }
  .process-num { margin-top: 30px; }
  .process-item p { font-size: 14px; }
  .approach-note { margin-top: 34px; }
  .tab-list { grid-template-columns: 1fr; border-bottom: 2px solid var(--espresso); }
  .tab-list button { min-height: 52px; border-right: 0; border-bottom: 1px solid var(--espresso); }
  .tab-list button:last-child { border-bottom: 0; }
  .tab-panel { min-height: 500px; padding: 30px 24px; box-shadow: 6px 6px 0 var(--espresso); }
  .principle-grid { grid-template-columns: 1fr; }
  .principle-card { min-height: 245px; }
  .principle-card:nth-child(2) { transform: none; box-shadow: none; }
  .principle-card h3 { margin-top: 56px; }
  .contact { min-height: 680px; padding: 80px 20px; }
  .contact h2 { font-size: clamp(50px, 15vw, 76px); }
  .contact-copy > p:not(.section-kicker) { font-size: 15px; }
  .contact-orbit { width: 360px; height: 360px; right: -190px; top: auto; bottom: -40px; }
  .contact-orbit::before { inset: 55px; }
  .contact-orbit::after { inset: 118px; }
  .contact-stamp { left: 20px; right: auto; bottom: 28px; }
}

@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; }
  .reveal { opacity: 1; transform: none; }
  .title-accent i { transform: rotate(-1deg) scaleX(1); }
}