:root {
  --ink: #1D2E36;
  --ink-2: #26404B;
  --ink-3: #335563;
  --saffron: #F5A300;
  --saffron-deep: #C97F00;
  --saffron-soft: #FDF0D2;
  --leaf: #6E9E3F;
  --cream: #FBF8F1;
  --sand: #F2EBDC;
  --line: #E4DCCB;
  --text: #24323A;
  --muted: #5E6B71;
  --white: #FFFFFF;
  --radius: 22px;
  --serif: "Zilla Slab", "Noto Serif Devanagari", Georgia, serif;
  --sans: "Montserrat", "Noto Sans Devanagari", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; background: var(--cream); color: var(--text); font: 400 16px/1.7 var(--sans); }
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; }
.wrap { width: min(1200px, 100% - 32px); margin-inline: auto; }
.section { padding: 104px 0; }

.eyebrow { margin: 0 0 14px; font: 600 13px/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--saffron-deep); display: flex; align-items: center; gap: 10px; }
.eyebrow::before { content: ""; width: 28px; height: 2px; background: currentColor; }
.eyebrow.light { color: var(--saffron); }
.display { font: 600 clamp(30px, 4.2vw, 50px)/1.12 var(--serif); color: var(--ink); max-width: 24ch; }
.display.light { color: var(--white); }
.section-lead { max-width: 62ch; color: var(--muted); margin: 18px 0 0; font-size: 17px; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 26px; border-radius: 10px; font: 600 15px/1 var(--sans); text-decoration: none; border: 2px solid transparent; cursor: pointer; transition: transform .15s, background .15s, color .15s; }
.btn:hover { transform: translateY(-2px); }
.btn-solid { background: var(--saffron); color: var(--ink); }
.btn-solid:hover { background: #FFB61F; }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--white); }
.btn.wide { width: 100%; }

/* ---------------------------------------------------------------- header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(251, 248, 241, .92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { width: auto; height: 44px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font: 700 24px/1 var(--serif); color: var(--ink); }
.brand-text small { font: 600 11px/1.4 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--saffron-deep); }
.brand-text.light strong { color: var(--white); }
.brand-text.light small { color: var(--saffron); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a { padding: 10px 14px; border-radius: 999px; font: 500 15px/1 var(--sans); text-decoration: none; color: var(--ink); transition: background .15s; }
.main-nav a:hover { background: var(--sand); }
.main-nav a.is-current { background: var(--ink); color: var(--white); }
.nav-toggle { display: none; background: none; border: 0; width: 44px; height: 44px; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: transform .2s, opacity .2s; }

/* ---------------------------------------------------------------- hero */
.hero { padding: 64px 0 96px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.hero h1 { font: 600 clamp(36px, 5.2vw, 64px)/1.06 var(--serif); color: var(--ink); }
.hero h1 em { font-style: normal; color: var(--saffron-deep); background: linear-gradient(transparent 62%, var(--saffron-soft) 62%); }
.lead { font-size: 18px; color: var(--muted); max-width: 54ch; margin: 24px 0 32px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-visual { position: relative; justify-self: center; width: min(460px, 100%); }
.arch { border-radius: 240px 240px 24px 24px; overflow: hidden; aspect-ratio: 4 / 5; border: 10px solid var(--white); box-shadow: 0 30px 60px -30px rgba(29, 46, 54, .45); }
.arch img { width: 100%; height: 100%; object-fit: cover; }
.hero-chip { position: absolute; left: -36px; bottom: 44px; background: var(--ink); color: var(--white); padding: 18px 22px; border-radius: 18px; display: flex; align-items: center; gap: 14px; box-shadow: 0 16px 30px -12px rgba(0, 0, 0, .4); }
.chip-num { font: 700 40px/1 var(--serif); color: var(--saffron); }
.chip-label { font-size: 13px; line-height: 1.35; }
.hero-visual::before { content: ""; position: absolute; inset: -28px -28px auto auto; width: 160px; height: 160px; border-radius: 50%; background: radial-gradient(circle, var(--saffron) 0 2.5px, transparent 3px) 0 0 / 18px 18px; opacity: .55; z-index: -1; }

/* ---------------------------------------------------------------- stats */
.stats { background: var(--ink); color: var(--white); padding: 52px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 6px 28px; border-left: 1px solid rgba(255, 255, 255, .14); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat-num { display: block; font: 700 clamp(36px, 4vw, 52px)/1.05 var(--serif); color: var(--saffron); font-variant-numeric: tabular-nums; }
.stat-label { display: block; margin-top: 8px; font-size: 14px; color: #C9D3D7; max-width: 24ch; }

/* ---------------------------------------------------------------- about */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; margin-top: 40px; align-items: start; }
.about-copy p { margin: 0 0 18px; color: var(--muted); font-size: 17px; }
.sizing-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; box-shadow: 0 20px 40px -30px rgba(29, 46, 54, .35); }
.sizing-card h3 { font: 600 26px/1.2 var(--serif); color: var(--ink); }
.sizing-sub { margin: 4px 0 22px; color: var(--muted); font-size: 14px; }
.sizing-flow { display: grid; grid-template-columns: 1fr 40px 1fr; gap: 14px; align-items: start; }
.sizing-head { display: block; font: 600 12px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.io { display: flex; align-items: baseline; gap: 10px; padding: 10px 12px; border-radius: 10px; background: var(--cream); margin-bottom: 8px; }
.io b { font: 700 18px/1 var(--serif); color: var(--ink); min-width: 58px; }
.io span { font-size: 14px; color: var(--muted); }
.out .io { background: #EEF5E6; }
.io.hl { background: var(--saffron); }
.io.hl b, .io.hl span { color: var(--ink); font-weight: 700; }
.sizing-arrow { color: var(--saffron); }
.sizing-arrow { align-self: center; padding-top: 22px; }
.sizing-arrow svg { width: 40px; height: 40px; }

/* ---------------------------------------------------------------- loop */
.loop { background: var(--ink); color: var(--white); position: relative; overflow: hidden; }
.loop::before { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse at 20% 0%, rgba(245, 163, 0, .12), transparent 55%), radial-gradient(ellipse at 90% 100%, rgba(110, 158, 63, .14), transparent 55%); pointer-events: none; }
.loop-head { display: flex; justify-content: space-between; align-items: end; gap: 32px; flex-wrap: wrap; position: relative; }
.loop-intro { color: #B8C5CA; margin: 16px 0 0; max-width: 52ch; }
.loop-tabs { display: inline-flex; background: var(--ink-2); padding: 5px; border-radius: 999px; }
.tab { border: 0; background: none; color: #C9D3D7; font: 600 14px/1 var(--sans); padding: 12px 20px; border-radius: 999px; cursor: pointer; }
.tab.is-active { background: var(--saffron); color: var(--ink); }
.loop-stage { position: relative; margin-top: 36px; display: grid; grid-template-columns: 1fr 320px; gap: 24px; align-items: center; }
.loop-svg { width: 100%; height: auto; overflow: visible; }
.loop-track { fill: none; stroke: rgba(255, 255, 255, .08); stroke-width: 34; stroke-linejoin: round; }
.loop-flow { fill: none; stroke: url(#loopGrad); stroke-width: 6; stroke-linecap: round; stroke-dasharray: 2 16; animation: flow 1.6s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -18; } }
.loop-dots circle { fill: var(--white); filter: drop-shadow(0 0 6px rgba(245, 163, 0, .9)); }
.lobe-label { font: 700 15px var(--sans); letter-spacing: .22em; fill: rgba(255, 255, 255, .5); text-transform: uppercase; }
.node { cursor: pointer; }
.node .ring { fill: var(--ink); stroke: var(--saffron); stroke-width: 3; transition: r .2s, fill .2s; }
.node.right .ring { stroke: #8DBA5B; }
.node .num { font: 700 16px var(--sans); fill: var(--white); text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.node .label { font: 600 15px var(--sans); fill: #DCE4E7; pointer-events: none; transition: fill .2s; }
.node:hover .ring, .node.is-active .ring { fill: var(--saffron); r: 24; }
.node.right:hover .ring, .node.right.is-active .ring { fill: #8DBA5B; }
.node.is-active .num, .node:hover .num { fill: var(--ink); }
.node.is-active .label { fill: var(--white); }
.node:focus { outline: none; }
.node:focus-visible .ring { stroke: var(--white); stroke-width: 4; }
.loop-detail { background: var(--ink-2); border: 1px solid rgba(255, 255, 255, .1); border-radius: var(--radius); padding: 28px; min-height: 260px; }
.detail-step { font: 600 12px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--saffron); }
.detail-title { font: 600 26px/1.2 var(--serif); margin: 12px 0 12px; }
.detail-text { color: #C9D3D7; margin: 0 0 18px; font-size: 15px; }
.detail-stat { display: inline-block; background: rgba(245, 163, 0, .14); color: var(--saffron); padding: 8px 14px; border-radius: 999px; font: 600 13px/1.2 var(--sans); }
.detail-stat:empty { display: none; }

/* ---------------------------------------------------------------- plants */
.plants-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 32px; margin-top: 44px; align-items: start; }
.map-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.chip { border: 1.5px solid var(--line); background: var(--white); color: var(--ink); font: 600 13px/1 var(--sans); padding: 10px 16px; border-radius: 999px; cursor: pointer; }
.chip.is-active { background: var(--ink); color: var(--white); border-color: var(--ink); }
.up-map { width: 100%; height: auto; }
.up-shape { fill: var(--sand); stroke: var(--white); stroke-width: 1.2; stroke-linejoin: round; transition: fill .2s; }
.up-shape:hover { fill: #EADFC6; }
.up-shape.ours { fill: var(--saffron-soft); }
.ref circle { fill: var(--muted); }
.ref text { font: 500 14px var(--sans); fill: var(--muted); font-style: italic; }
.pin { cursor: pointer; transition: opacity .25s; }
.pin .halo { fill: var(--saffron); opacity: .25; transform-box: fill-box; transform-origin: center; animation: pulse 2.4s ease-out infinite; }
.pin .core { fill: var(--saffron); stroke: var(--white); stroke-width: 3; }
.pin.y2 .halo, .pin.y2 .core { fill: var(--leaf); }
.pin.hq .core { fill: var(--ink); }
.pin.hq .halo { fill: var(--ink); }
.pin text { font: 600 17px var(--sans); fill: var(--ink); paint-order: stroke; stroke: var(--sand); stroke-width: 5px; stroke-linejoin: round; }
.pin.is-dim { opacity: .18; }
.pin.is-hot .core { r: 13; }
@keyframes pulse { 0% { transform: scale(.6); opacity: .5; } 100% { transform: scale(2.2); opacity: 0; } }
.map-legend { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.map-legend span { display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot.y1 { background: var(--saffron); } .dot.y2 { background: var(--leaf); } .dot.hq { background: var(--ink); }
.plant-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.plant { background: var(--white); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; display: grid; grid-template-columns: auto 1fr; gap: 4px 16px; cursor: pointer; transition: border-color .2s, transform .2s, opacity .25s; }
.plant:hover, .plant.is-hot { border-color: var(--saffron); transform: translateX(4px); }
.plant.is-dim { opacity: .35; }
.plant-year { grid-row: span 2; align-self: center; font: 700 12px/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; background: var(--saffron-soft); color: var(--saffron-deep); padding: 10px 10px; border-radius: 10px; text-align: center; }
.plant.y2 .plant-year { background: #E8F1DE; color: #4C7527; }
.plant h3 { font: 600 20px/1.2 var(--serif); color: var(--ink); }
.plant-meta { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13px; color: var(--muted); }
.plant-meta b { color: var(--ink); }

/* ---------------------------------------------------------------- products */
.products { background: var(--sand); }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.product { background: var(--white); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; gap: 12px; border: 1px solid var(--line); }
.product h3 { font: 600 22px/1.2 var(--serif); color: var(--ink); }
.product p { margin: 0; color: var(--muted); font-size: 15px; flex: 1; }
.product-stat { font: 700 14px/1 var(--sans); color: var(--saffron-deep); }
.product.feature { grid-row: span 2; background: var(--ink); color: var(--white); border: 0; justify-content: flex-end; background-image: linear-gradient(180deg, rgba(29, 46, 54, .1), rgba(29, 46, 54, .95) 62%), url(img/plant.jpg); background-size: cover; background-position: center; min-height: 420px; }
.product.feature h3 { color: var(--white); font-size: 30px; }
.product.feature p { color: #D3DCDF; flex: 0; }
.product.feature .product-stat { color: var(--saffron); font-size: 16px; }
.product-tag { align-self: flex-start; background: var(--saffron); color: var(--ink); font: 700 11px/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; padding: 8px 12px; border-radius: 999px; }
.product.photo { padding: 0; overflow: hidden; }
.product.photo img { height: 130px; width: 100%; object-fit: cover; }
.photo-body { padding: 24px 28px 28px; display: flex; flex-direction: column; gap: 12px; flex: 1; }

/* ---------------------------------------------------------------- partners */
.partner-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.partner { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; background: var(--white); position: relative; overflow: hidden; }
.partner::after { content: ""; position: absolute; right: -40px; top: -40px; width: 120px; height: 120px; border-radius: 50%; background: var(--saffron-soft); }
.partner-logo { position: relative; z-index: 1; display: inline-grid; place-items: center; width: 72px; height: 72px; border-radius: 18px; background: var(--ink); color: var(--saffron); font: 700 18px/1 var(--sans); letter-spacing: .06em; margin-bottom: 20px; }
.partner h3 { font: 600 22px/1.2 var(--serif); color: var(--ink); }
.partner p { color: var(--muted); font-size: 15px; margin: 10px 0 18px; }
.partner-date { font: 600 13px/1 var(--sans); color: var(--ink); border-top: 1px solid var(--line); padding-top: 16px; display: block; }

/* ---------------------------------------------------------------- support */
.support { padding-bottom: 104px; }
.support-banner { background: var(--ink); padding: 96px 0 140px; position: relative; overflow: hidden; }
.support-banner::after { content: ""; position: absolute; right: -120px; bottom: -220px; width: 520px; height: 520px; border-radius: 50%; border: 70px solid rgba(245, 163, 0, .1); }
.banner-text { color: #C9D3D7; max-width: 60ch; font-size: 18px; margin: 20px 0 0; position: relative; z-index: 1; }
.banner-text strong { color: var(--saffron); }
.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: -80px; position: relative; }
.support-item { background: var(--white); border-radius: 18px; padding: 26px; border: 1px solid var(--line); border-top: 4px solid var(--saffron); box-shadow: 0 20px 40px -30px rgba(29, 46, 54, .4); }
.support-item h3 { font: 600 20px/1.2 var(--serif); color: var(--ink); margin-bottom: 8px; }
.support-item p { margin: 0; color: var(--muted); font-size: 15px; }

/* ---------------------------------------------------------------- contact */
.contact { background: var(--sand); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.contact-info > p { color: var(--muted); font-size: 17px; margin: 18px 0 28px; }
.address { padding: 18px 0; border-top: 1px solid var(--line); }
.address h3 { font: 600 13px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--saffron-deep); margin-bottom: 8px; }
.address p { margin: 0; }
.contact-form { background: var(--white); border-radius: var(--radius); padding: 32px; display: grid; gap: 16px; border: 1px solid var(--line); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: grid; gap: 6px; font: 600 14px/1.2 var(--sans); color: var(--ink); }
.contact-form input, .contact-form select, .contact-form textarea { font: 400 15px/1.4 var(--sans); padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 10px; background: var(--cream); color: var(--text); width: 100%; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--saffron); background: var(--white); }
.contact-form .is-invalid { border-color: #C0392B; }
.form-note { margin: 0; font-size: 14px; color: var(--leaf); min-height: 1em; }
.form-note.err { color: #C0392B; }

/* ---------------------------------------------------------------- footer */
.site-footer { background: #142229; color: #AEBBC0; padding: 64px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 48px; }
.footer-tag { margin: 14px 0 0; }
.site-footer h4 { color: var(--white); font: 600 13px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; margin-bottom: 16px; }
.site-footer a { display: block; text-decoration: none; padding: 4px 0; }
.site-footer a:hover { color: var(--saffron); }
.site-footer p { margin: 0; }
.footer-base { border-top: 1px solid rgba(255, 255, 255, .1); padding: 20px 0; font-size: 13px; }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1080px) {
  .main-nav a { padding: 10px 10px; font-size: 14px; }
  .loop-stage { grid-template-columns: 1fr; }
  .loop-detail { min-height: 0; }
}
@media (max-width: 900px) {
  .section { padding: 72px 0; }
  .nav-toggle { display: block; }
  .main-nav { position: absolute; top: 76px; left: 0; right: 0; background: var(--cream); flex-direction: column; align-items: stretch; padding: 12px 16px 20px; border-bottom: 1px solid var(--line); display: none; }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 14px 12px; border-radius: 10px; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero { padding-top: 40px; }
  .hero-grid, .about-grid, .plants-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { width: min(380px, 88%); }
  .hero-chip { left: -20px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 28px 0; }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .product-grid, .partner-grid, .support-grid { grid-template-columns: 1fr 1fr; }
  .product.feature, .product.photo { grid-row: auto; }
  .product.feature { grid-column: span 2; min-height: 340px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .stats-grid, .product-grid, .partner-grid, .support-grid, .field-row, .footer-grid { grid-template-columns: 1fr; }
  .stat { border-left: 0; padding-left: 0; }
  .product.feature { grid-column: auto; }
  .sizing-card { padding: 22px; }
  .sizing-flow { grid-template-columns: 1fr; }
  .sizing-arrow { padding-top: 0; }
  .sizing-arrow svg { transform: rotate(90deg); margin: 0 auto; }
  .io b { min-width: 52px; font-size: 16px; }
  .loop-tabs { width: 100%; }
  .tab { flex: 1; }
  .node .label { display: none; }
  .node .ring { r: 30; }
  .node:hover .ring, .node.is-active .ring { r: 36; }
  .node .num { font-size: 26px; }
  .lobe-label { font-size: 26px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .loop-flow, .pin .halo { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}