:root {
  --navy: #0e2a3b;
  --navy-2: #153c52;
  --blue: #246fa9;
  --green: #35a875;
  --paper: #f5f8f8;
  --white: #fff;
  --ink: #14242d;
  --muted: #65747c;
  --line: #dbe4e6;
  --shell: min(1180px, calc(100vw - 48px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 86px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif; font-size: 16px; line-height: 1.75; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.shell { width: var(--shell); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 99; padding: 10px 16px; background: white; color: var(--ink); }
.skip-link:focus { top: 16px; }
.site-header { position: fixed; inset: 0 0 auto; z-index: 20; background: #fff; border-bottom: 1px solid rgba(14,42,59,.1); }
.header-inner { height: 86px; display: flex; align-items: center; justify-content: space-between; }
.brand { width: 224px; }
.brand img { width: 100%; height: auto; }
.site-nav { display: flex; align-items: center; gap: 30px; color: #31464f; font-size: .9rem; }
.site-nav > a { position: relative; padding: 9px 0; }
.site-nav > a:not(.nav-phone)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 3px; height: 2px; background: var(--green); transition: right .2s; }
.site-nav > a:hover::after, .site-nav > a:focus-visible::after { right: 0; }
.nav-phone { min-width: 188px; display: flex; align-items: center; gap: 10px; padding: 10px 18px !important; border-left: 1px solid var(--line); color: var(--navy); font-weight: 700; line-height: 1.2; }
.nav-phone small { display: block; margin-bottom: 4px; color: var(--muted); font-size: .68rem; font-weight: 500; letter-spacing: .1em; }
.phone-icon { width: 32px; height: 32px; flex: 0 0 auto; fill: none; stroke: var(--blue); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.nav-phone .phone-icon { width: 29px; height: 29px; stroke: var(--green); }
.menu-toggle { display: none; border: 0; background: none; padding: 8px; }
.menu-toggle i { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--navy); }
.hero { position: relative; min-height: 790px; height: 100svh; display: flex; align-items: center; overflow: hidden; background: var(--navy); color: white; }
.hero-image, .hero-shade { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-image { filter: saturate(.6) contrast(1.02); }
.hero-shade { background: linear-gradient(90deg, rgba(10,31,43,.92) 0%, rgba(10,31,43,.72) 42%, rgba(10,31,43,.16) 76%), linear-gradient(0deg, rgba(8,26,37,.45), transparent 42%); }
.hero-content { position: relative; z-index: 2; padding-top: 86px; }
.eyebrow, .kicker { margin: 0 0 24px; color: var(--blue); font-size: .78rem; font-weight: 700; letter-spacing: .16em; }
.eyebrow { color: #7ccfa8; }
.hero h1 { margin: 0; max-width: 760px; font-size: clamp(3.5rem, 6.5vw, 6.5rem); line-height: 1.08; letter-spacing: -.055em; }
.hero-copy { max-width: 650px; margin: 30px 0 0; color: rgba(255,255,255,.74); font-size: 1.08rem; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 34px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 26px; min-height: 54px; padding: 0 26px; font-weight: 700; }
.button-primary { background: var(--blue); color: white; }
.button-primary:hover { background: #195d90; }
.text-link { padding-block: 10px 4px; border-bottom: 1px solid rgba(255,255,255,.35); }
.hero-foot { position: absolute; z-index: 2; bottom: 0; left: 50%; transform: translateX(-50%); display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid rgba(255,255,255,.17); }
.hero-foot div { display: flex; align-items: center; gap: 18px; padding: 22px 0; }
.hero-foot div + div { padding-left: 34px; border-left: 1px solid rgba(255,255,255,.17); }
.hero-foot span { color: #79cba5; font: 600 .75rem/1 monospace; }
.hero-foot strong { font-weight: 600; }
.proof-band { background: white; border-bottom: 1px solid var(--line); }
.proof-grid { display: grid; grid-template-columns: repeat(4,1fr); }
.proof-grid > div { min-height: 142px; display: flex; align-items: center; gap: 20px; padding: 25px 28px; }
.proof-grid > div + div { border-left: 1px solid var(--line); }
.proof-grid strong { color: var(--blue); font-size: 1.8rem; letter-spacing: -.03em; }
.proof-grid span { color: var(--muted); font-size: .88rem; line-height: 1.65; }
.section { padding: 126px 0; }
.section-heading { display: grid; grid-template-columns: .8fr 1.65fr 1fr; align-items: start; gap: 48px; margin-bottom: 66px; }
.section-heading h2, .about h2, .contact h2 { margin: 0; color: var(--navy); font-size: clamp(2.1rem, 4vw, 3.55rem); line-height: 1.25; letter-spacing: -.045em; }
.section-heading > p:last-child { margin: 8px 0 0; color: var(--muted); }
.service-list { border-top: 1px solid var(--line); }
.service-row { display: grid; grid-template-columns: 70px 1.15fr 1.5fr 1fr; gap: 32px; align-items: start; min-height: 200px; padding: 42px 0; border-bottom: 1px solid var(--line); }
.service-no { padding-top: 9px; color: var(--green); font: 700 .8rem/1 monospace; }
.service-row h3 { margin: 0; color: var(--navy); font-size: 1.45rem; }
.service-row > p { margin: 0; color: var(--muted); }
.service-row ul { margin: 0; padding: 0; list-style: none; color: #384d56; font-size: .9rem; }
.service-row li { padding: 5px 0; }
.service-row li::before { content: "/"; margin-right: 9px; color: var(--green); }
.lifecycle { background: var(--navy); color: white; }
.lifecycle-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 120px; }
.lifecycle .section-heading { display: block; margin: 0; position: sticky; top: 130px; align-self: start; }
.heading-light h2 { color: white; }
.heading-light .kicker { color: #71c59d; }
.heading-light > p:last-child { max-width: 470px; color: rgba(255,255,255,.58); }
.lifecycle-steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.17); }
.lifecycle-steps li { display: grid; grid-template-columns: 72px 1fr; gap: 18px; padding: 38px 0; border-bottom: 1px solid rgba(255,255,255,.17); }
.lifecycle-steps li > span { color: #71c59d; font: 700 .78rem/1.8 monospace; }
.lifecycle-steps h3 { margin: 0 0 8px; font-size: 1.35rem; }
.lifecycle-steps p { margin: 0; color: rgba(255,255,255,.58); }
.qualifications { background: white; }
.qualification-grid { display: grid; grid-template-columns: repeat(2,1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.qualification-card { min-height: 330px; padding: 42px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: white; }
.qualification-card > span { color: var(--green); font-size: .75rem; font-weight: 700; letter-spacing: .12em; }
.qualification-card h3 { margin: 30px 0 8px; color: var(--navy); font-size: 1.45rem; }
.qualification-card > p { min-height: 54px; margin: 0; color: var(--muted); }
.qualification-card dl { margin: 28px 0 0; border-top: 1px solid var(--line); }
.qualification-card dl div { display: grid; grid-template-columns: 105px 1fr; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: .86rem; }
.qualification-card dt { color: var(--muted); }
.qualification-card dd { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.qualification-note { background: #f0f7f4; }
.about { background: var(--paper); }
.about-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 100px; align-items: center; }
.about-logo { aspect-ratio: 1; display: grid; place-items: center; padding: 2%; }
.about-logo img { width: 100%; filter: drop-shadow(0 18px 24px rgba(14,42,59,.10)); }
.about-copy .lead { margin: 28px 0 18px; color: var(--ink); font-size: 1.3rem; line-height: 1.8; }
.about-copy > p:not(.kicker):not(.lead) { color: var(--muted); }
.principles { margin-top: 42px; border-top: 1px solid var(--line); }
.principles > div { display: grid; grid-template-columns: 42px 126px 1fr; gap: 15px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.principles span { color: var(--green); font: 700 .75rem/1.8 monospace; }
.principles p { margin: 0; color: var(--muted); font-size: .92rem; }
.cooperation { overflow: hidden; background: var(--navy); color: white; }
.cooperation-intro { display: grid; grid-template-columns: .88fr 1.12fr; gap: 104px; align-items: center; }
.cooperation-mark { position: relative; min-height: 390px; display: flex; align-items: center; padding: 64px 52px; border: 1px solid rgba(255,255,255,.15); background: linear-gradient(145deg, rgba(36,111,169,.18), rgba(53,168,117,.08)); font-weight: 700; letter-spacing: -.06em; }
.cooperation-mark::before { content: "合作 × 探索"; position: absolute; top: 34px; left: 52px; color: #78cba4; font-size: .75rem; letter-spacing: .18em; }
.cooperation-mark::after { content: ""; position: absolute; right: -58px; bottom: -80px; width: 230px; height: 230px; border: 1px solid rgba(120,203,164,.24); border-radius: 50%; }
.cooperation-word { font-size: clamp(2.65rem, 5.4vw, 5.3rem); }
.cooperation-x-mark { flex: 0 0 auto; width: clamp(72px, 8vw, 126px); height: auto; margin-inline: -3px -1px; overflow: visible; }
.x-stroke-main { fill: #69c69b; }
.x-stroke-sweep { fill: #3b8dc3; }
.cooperation-domain { align-self: center; margin: 34px 0 0 5px; color: rgba(255,255,255,.42); font-size: 1.05rem; letter-spacing: .06em; }
.cooperation-copy .kicker { color: #78cba4; }
.cooperation-copy h2 { margin: 0; color: white; font-size: clamp(2.2rem, 4vw, 3.7rem); line-height: 1.25; letter-spacing: -.045em; }
.cooperation-copy .lead { margin: 30px 0 18px; color: rgba(255,255,255,.9); font-size: 1.22rem; line-height: 1.85; }
.cooperation-copy > p:last-child { color: rgba(255,255,255,.6); }
.cooperation-copy strong { color: white; }
.cooperation-values { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 82px; border-top: 1px solid rgba(255,255,255,.16); border-left: 1px solid rgba(255,255,255,.16); }
.cooperation-values article { min-height: 244px; padding: 34px 36px; border-right: 1px solid rgba(255,255,255,.16); border-bottom: 1px solid rgba(255,255,255,.16); }
.cooperation-values span { color: #78cba4; font: 700 .75rem/1 monospace; }
.cooperation-values h3 { margin: 36px 0 12px; font-size: 1.3rem; }
.cooperation-values p { margin: 0; color: rgba(255,255,255,.56); font-size: .92rem; }
.cooperation-action { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding-top: 40px; }
.cooperation-action p { display: flex; gap: 20px; margin: 0; }
.cooperation-action p span { color: rgba(255,255,255,.42); }
.cooperation-action .text-link { color: white; }
.contact { padding: 115px 0; background: #e8f0f2; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 110px; align-items: start; }
.contact-grid > div:first-child > p:last-child { max-width: 510px; color: var(--muted); }
.contact-card { padding: 42px; background: white; box-shadow: 0 25px 80px rgba(14,42,59,.08); }
.kicker-phone { display: flex; align-items: center; gap: 10px; }
.kicker-phone .phone-icon { width: 28px; height: 28px; stroke: var(--green); }
.contact-primary { display: flex; align-items: center; gap: 18px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.contact-primary small { display: block; color: var(--green); font-size: .75rem; font-weight: 700; letter-spacing: .12em; }
.contact-primary strong { display: block; margin-top: 7px; color: var(--navy); font-size: clamp(1.8rem, 4vw, 2.8rem); letter-spacing: -.03em; }
.contact-primary .phone-icon { width: 54px; height: 54px; stroke: var(--blue); stroke-width: 1.45; }
.contact-card dl { margin: 20px 0 0; }
.contact-card dl div { display: grid; grid-template-columns: 100px 1fr; gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.contact-card dt { color: var(--muted); }
.contact-card dd { margin: 0; font-weight: 600; }
.site-footer { background: #081e2a; color: rgba(255,255,255,.6); }
.footer-main { display: grid; grid-template-columns: 250px 1fr auto; gap: 38px; align-items: center; padding: 58px 0; }
.footer-main img { width: 230px; filter: brightness(0) invert(1); opacity: .92; }
.footer-main p { margin: 0; }
.footer-main > a { color: white; }
.footer-legal { display: flex; justify-content: space-between; padding: 20px 0; border-top: 1px solid rgba(255,255,255,.12); font-size: .82rem; }
.footer-legal a { color: inherit; text-decoration: underline; text-decoration-color: rgba(255,255,255,.28); text-underline-offset: 4px; }
.footer-legal a:hover, .footer-legal a:focus-visible { color: white; text-decoration-color: var(--green); }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
:focus-visible { outline: 3px solid #4fbe8a; outline-offset: 4px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }
@media (max-width: 980px) {
  :root { --shell: min(100% - 36px, 760px); }
  .header-inner { height: 76px; }
  .brand { width: 190px; }
  .menu-toggle { display: block; }
  .site-nav { position: fixed; inset: 76px 0 auto; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 18px; background: rgba(255,255,255,.99); border-top: 1px solid var(--line); box-shadow: 0 18px 40px rgba(14,42,59,.12); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 13px 8px !important; border-bottom: 1px solid var(--line); }
  .nav-phone { border-left: 0; }
  .section-heading { grid-template-columns: 1fr; gap: 12px; }
  .section-heading .kicker { margin-bottom: 8px; }
  .proof-grid { grid-template-columns: repeat(2,1fr); }
  .proof-grid > div:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .proof-grid > div:nth-child(4) { border-top: 1px solid var(--line); }
  .service-row { grid-template-columns: 50px 1fr 1.5fr; }
  .service-row ul { grid-column: 2 / 4; display: flex; gap: 22px; }
  .lifecycle-grid, .contact-grid { grid-template-columns: 1fr; gap: 54px; }
  .lifecycle .section-heading { position: static; }
  .about-grid { grid-template-columns: .8fr 1.2fr; gap: 56px; }
  .cooperation-intro { grid-template-columns: 1fr; gap: 58px; }
  .cooperation-mark { min-height: 290px; }
  .cooperation-values { grid-template-columns: 1fr; margin-top: 64px; }
  .cooperation-values article { min-height: auto; }
}
@media (max-width: 640px) {
  :root { --shell: calc(100% - 32px); }
  .header-inner { height: 68px; }
  .site-nav { top: 68px; }
  .brand { width: 160px; }
  .hero { min-height: 720px; align-items: flex-start; }
  .hero-image { object-position: 61% center; opacity: .72; }
  .hero-shade { background: linear-gradient(90deg, rgba(9,29,40,.91), rgba(9,29,40,.42)), linear-gradient(0deg, rgba(9,29,40,.72), transparent 52%); }
  .hero-content { padding-top: 145px; }
  .eyebrow { max-width: 280px; line-height: 1.7; }
  .hero h1 { font-size: clamp(2.8rem, 14vw, 4rem); }
  .hero-copy { font-size: .97rem; line-height: 1.8; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 14px; margin-top: 28px; }
  .hero-foot { font-size: .76rem; }
  .hero-foot div { display: block; padding: 14px 7px; }
  .hero-foot div + div { padding-left: 10px; }
  .hero-foot span { display: block; margin-bottom: 4px; }
  .proof-grid > div { min-height: 125px; display: block; padding: 22px 18px; }
  .proof-grid strong, .proof-grid span { display: block; }
  .proof-grid strong { margin-bottom: 5px; font-size: 1.55rem; }
  .section { padding: 84px 0; }
  .section-heading { margin-bottom: 42px; }
  .service-row { grid-template-columns: 38px 1fr; gap: 15px; padding: 30px 0; }
  .service-row > p, .service-row ul { grid-column: 2; }
  .service-row ul { display: block; }
  .qualification-grid { grid-template-columns: 1fr; }
  .qualification-card { min-height: auto; padding: 32px 26px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-logo { max-width: 360px; }
  .principles > div { grid-template-columns: 36px 1fr; }
  .principles p { grid-column: 2; }
  .cooperation-mark { min-height: 220px; padding: 52px 24px 28px; }
  .cooperation-mark::before { top: 24px; left: 24px; }
  .cooperation-mark::after { right: -95px; bottom: -115px; }
  .cooperation-domain { margin-top: 24px; font-size: .75rem; }
  .cooperation-values { margin-top: 54px; }
  .cooperation-values article { min-height: auto; padding: 30px 26px; }
  .cooperation-values h3 { margin-top: 22px; }
  .cooperation-action, .cooperation-action p { align-items: flex-start; flex-direction: column; gap: 10px; }
  .cooperation-action { gap: 28px; }
  .contact { padding: 80px 0; }
  .contact-card { padding: 28px 24px; }
  .contact-primary { gap: 13px; }
  .contact-primary .phone-icon { width: 44px; height: 44px; }
  .contact-card dl div { grid-template-columns: 1fr; gap: 4px; }
  .footer-main { grid-template-columns: 1fr; padding: 48px 0; }
  .footer-legal { display: grid; gap: 8px; }
}