:root{--navy:#071a3d;--navy2:#102a56;--blue:#0969ff;--violet:#6848f5;--pale:#f2f7ff;--line:#ccdaf0;--ink:#0d1d38;--muted:#58677f;--white:#fff;--shell:min(1180px,calc(100% - 40px))}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fff;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:inherit}
.skip{position:fixed;left:16px;top:-60px;z-index:100;background:#fff;padding:12px 16px}.skip:focus{top:16px}
.csr-header{height:82px;display:flex;align-items:center;gap:34px;padding:0 max(24px,calc((100vw - 1180px)/2));border-bottom:1px solid #e7ecf4;background:rgba(255,255,255,.94);position:sticky;top:0;z-index:20;backdrop-filter:blur(18px)}
.company-brand{align-items:center;display:flex;gap:11px;text-decoration:none;white-space:nowrap}.company-brand img{height:38px;width:38px}.company-brand span{display:flex;flex-direction:column;line-height:1}.company-brand strong{color:var(--navy);font-size:14px;letter-spacing:-.015em}.company-brand small{color:var(--muted);font-size:8px;font-weight:700;letter-spacing:.13em;margin-top:6px;text-transform:uppercase}.csr-header nav{display:flex;gap:24px;margin-left:auto}.csr-header nav a,.header-link{font-size:13px;font-weight:650;text-decoration:none}.csr-header nav a:hover{color:var(--blue)}
.header-link{background:var(--navy);color:#fff;padding:12px 16px}
.csr-hero{min-height:720px;background:var(--pale);position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(300px,.58fr);gap:70px;align-items:end;padding:110px max(24px,calc((100vw - 1180px)/2)) 92px}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(9,105,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(9,105,255,.07) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(to bottom,#000 35%,transparent)}
.hero-copy,.status-card{position:relative}.eyebrow{color:var(--blue);font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.arth-mark{width:80px;margin:36px 0 26px}.csr-hero h1{font-size:clamp(54px,7vw,96px);line-height:.94;letter-spacing:-.065em;margin:0;max-width:850px}.csr-hero h1 em{font-style:normal;color:var(--blue)}
.hero-copy>p:not(.eyebrow){max-width:720px;color:var(--muted);font-size:18px;line-height:1.75;margin:32px 0 0}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}.button{padding:15px 19px;text-decoration:none;font-size:13px;font-weight:750;border:1px solid var(--navy)}.button.primary{background:var(--navy);color:#fff}.button.secondary{background:#fff}
.status-card{background:var(--navy);color:#fff;padding:34px;border-radius:18px;box-shadow:0 24px 70px rgba(7,26,61,.16)}.status-card span{color:#a9caff;font-size:10px;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.status-card strong{display:block;font-size:25px;line-height:1.2;margin-top:20px}.status-card p{color:#dbe8ff;line-height:1.7;margin:18px 0 0;font-size:14px}
.meaning,.commitment,.relationship,.contact{width:var(--shell);margin:0 auto;padding:110px 0}.section-heading{display:grid;grid-template-columns:.6fr 1.4fr;gap:50px;align-items:start}.section-heading h2,.relationship h2,.contact h2{font-size:clamp(38px,5vw,64px);line-height:1.04;letter-spacing:-.055em;margin:0}.pillar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:70px}.pillar-grid article{border:1px solid var(--line);padding:28px;min-height:285px}.pillar-grid span{font-size:38px;color:var(--blue);font-weight:800}.pillar-grid h3{font-size:19px;margin:52px 0 13px}.pillar-grid p{font-size:14px;line-height:1.7;color:var(--muted)}
.commitment{background:var(--navy);color:#fff;width:100%;padding-left:max(24px,calc((100vw - 1180px)/2));padding-right:max(24px,calc((100vw - 1180px)/2));display:grid;grid-template-columns:1fr .75fr;gap:70px;align-items:center}.commitment h2{font-size:clamp(42px,6vw,76px);letter-spacing:-.06em;margin:18px 0}.commitment>div>p:last-child{color:#dbe8ff;line-height:1.75;max-width:570px}.amount-card{background:#fff;color:var(--navy);padding:42px;border-radius:16px}.amount-card span{color:var(--blue);font-weight:800;font-size:11px;text-transform:uppercase;letter-spacing:.12em}.amount-card strong{display:block;font-size:64px;letter-spacing:-.05em;margin:24px 0 12px}.amount-card sup{font-size:.45em}.amount-card p{color:var(--muted);font-size:13px}.notice{grid-column:1/-1;border-top:1px solid rgba(255,255,255,.18);padding-top:26px;color:#dbe8ff;font-size:13px}
.relationship{display:grid;grid-template-columns:.72fr 1.28fr;gap:90px;align-items:center}.arth-word{font-family:"Noto Serif Devanagari","Nirmala UI",serif;font-size:clamp(100px,16vw,210px);line-height:.8;color:var(--navy);letter-spacing:-.08em}.relationship>div>p:not(.eyebrow){color:var(--muted);line-height:1.8;font-size:17px;max-width:700px}.ecosystem-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.ecosystem-links a{border-bottom:1px solid var(--line);padding:11px 0;text-decoration:none;font-size:13px;font-weight:700;margin-right:16px}.ecosystem-links a:hover{color:var(--blue)}
.contact{border-top:1px solid var(--line);text-align:center}.contact h2{max-width:920px;margin:24px auto 36px}.contact>a{display:inline-block;background:var(--blue);color:#fff;padding:17px 22px;text-decoration:none;font-weight:750}
footer{background:#020617;color:#cbd5e1;min-height:170px;padding:52px max(24px,calc((100vw - 1180px)/2));display:flex;align-items:center;gap:30px}.footer-company-brand{align-items:center;display:flex;gap:12px;text-decoration:none}.footer-company-brand img{height:43px;width:43px}.footer-company-brand span{display:flex;flex-direction:column;line-height:1}.footer-company-brand strong{color:#fff;font-size:15px;letter-spacing:-.015em}.footer-company-brand small{color:#94a3b8;font-size:8px;font-weight:700;letter-spacing:.14em;margin-top:7px;text-transform:uppercase}footer p{font-size:12px;margin-left:auto}footer>a:last-child{font-size:12px}
@media(max-width:820px){.csr-header nav{display:none}.header-link{margin-left:auto}.csr-hero{grid-template-columns:1fr;padding-top:72px}.status-card{max-width:520px}.section-heading,.relationship,.commitment{grid-template-columns:1fr}.pillar-grid{grid-template-columns:repeat(2,1fr)}.arth-word{font-size:120px}.commitment{gap:35px}.amount-card{max-width:520px}footer{align-items:flex-start;flex-direction:column}footer p{margin-left:0}}
@media(max-width:520px){:root{--shell:calc(100% - 32px)}.csr-header{height:70px;padding:0 16px}.company-brand img{height:32px;width:32px}.company-brand strong{font-size:12px}.company-brand small{font-size:7px}.header-link{font-size:0;padding:11px}.header-link::after{content:"ARTH ↗";font-size:12px}.csr-hero{padding:60px 16px 64px;min-height:auto;gap:44px}.csr-hero h1{font-size:52px}.hero-copy>p:not(.eyebrow){font-size:16px}.meaning,.relationship,.contact{padding:78px 0}.pillar-grid{grid-template-columns:1fr}.pillar-grid article{min-height:auto}.commitment{padding:78px 16px}.amount-card strong{font-size:52px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}