/* Tridiagonal AI for Steel — delivered by Avenue
   Visual language: printed plant manual. White paper, black rules, flat brand colour, hatched isometric drawings.
   Colours follow the Tridiagonal brand guideline (May 2025). */
:root {
  /* primary */
  --cyan: #00a8eb;
  --green: #88c91c;
  --blue: #225aa6;
  --deep: #008f55;
  --grad: linear-gradient(90deg, #00a8eb, #88c91c);   /* brand primary gradient */
  /* secondary */
  --grey: #eaeaea;
  --yellow: #f5d200;
  --orange: #eb870c;         /* alerts and hot metal only */
  --tint: #e3f5fd;           /* cyan at low strength: hover and focus fills */
  --paper: #ffffff;
  --white: #ffffff;
  --ink: #000000;
  --ink-2: #3a3a3a;
  --muted: #5f5f5f;
  --avenue: #e11f25;         /* Avenue logo red — only in "delivered by Avenue" elements */
  --avenue-text: #b3151a;    /* the same red as small text on paper (AA) */
  --display: "Big Shoulders Display", "Arial Narrow", sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --rule: 2px solid var(--ink);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; overflow-x: clip; background: var(--paper); color: var(--ink); font-family: var(--body); font-size: 17px; line-height: 1.6; }
/* overflow-wrap + the clip on body keep the page from scrolling sideways while the display font is still loading */
h1, h2, h3, h4 { margin: 0; overflow-wrap: break-word; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; }
svg { display: block; max-width: 100%; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 100; background: var(--white); padding: 8px 14px; border: var(--rule); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
section { padding: clamp(60px, 9vw, 128px) 0; position: relative; }
.ruled { border-top: var(--rule); }
.sun { background: var(--grad); border-top: var(--rule); border-bottom: var(--rule); }
.cool { background: var(--grey); border-top: var(--rule); border-bottom: var(--rule); }
.molten { background: var(--blue); color: #fff; border-top: var(--rule); }
.molten :focus-visible { outline-color: #fff; }
.molten form :focus-visible { outline-color: var(--blue); }

/* Display type: condensed, uppercase, tight — sized for Vietnamese stacked diacritics */
h1, h2, .display { font-family: var(--display); font-weight: 900; text-transform: uppercase; letter-spacing: .005em; line-height: 1.1; text-wrap: balance; }
h2 { font-size: clamp(2.3rem, 5.4vw, 4.8rem); max-width: 20ch; margin-top: 18px; }
h3 { font-family: var(--display); font-weight: 800; text-transform: uppercase; letter-spacing: .01em; line-height: 1.12; font-size: 1.5rem; }
.brand-ecat { text-transform: none; }
h4 { font-family: var(--mono); font-weight: 600; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.eyebrow, .byline { font-family: var(--mono); font-weight: 600; font-size: 12.5px; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before, .byline::before { content: ""; display: inline-block; width: 28px; height: 10px; background: var(--grad); border: 1.5px solid var(--ink); margin-right: 10px; vertical-align: -1px; }
.byline { color: var(--avenue-text); }
.byline::before { background: var(--avenue); }
.lede { margin-top: 20px; max-width: 60ch; font-size: 1.12rem; color: var(--ink-2); }
.sun .lede { color: var(--ink); }
.molten .lede { color: #fff; }
.sec-head { margin-bottom: clamp(32px, 5vw, 60px); }

/* ---------- Scroll progress + header ---------- */
.progress { position: fixed; left: 0; top: 0; right: 0; height: 5px; z-index: 70; background: var(--grad); transform: scaleX(0); transform-origin: 0 50%; }
.site-header { position: sticky; top: 0; z-index: 50; background: var(--paper); border-bottom: var(--rule); }
.site-header .wrap { display: flex; align-items: center; gap: 20px; min-height: 68px; max-width: none; }
.lockup { display: flex; align-items: center; gap: 12px; text-decoration: none; align-self: stretch; }
/* Tridiagonal colour logo: white backgrounds only, never narrower than 151px (brand minimum 40 mm online). */
.logo-tri, .logo-ave { display: block; width: auto; }
.site-header .logo-tri { height: 46px; }
.site-header .logo-ave { height: 26px; }
.lang { margin-left: auto; display: flex; border: 1.5px solid var(--ink); font: 600 12px var(--mono); letter-spacing: .06em; }
.lang a { padding: 6px 9px; text-decoration: none; }
.lang a + a { border-left: 1.5px solid var(--ink); }
.lang a:hover { background: var(--tint); }
.lang a[aria-current] { background: var(--ink); color: var(--paper); }
.i18n-pending body { visibility: hidden; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.lockup-by { font-family: var(--mono); font-size: 11px; color: var(--muted); white-space: nowrap; }
.nav { margin-left: auto; display: flex; gap: 4px; font-family: var(--mono); font-size: 12.5px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; }
.nav a { text-decoration: none; padding: 8px 12px; transition: background-color .15s; }
.nav a:hover { background: var(--tint); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 54px; padding: 0 24px; font-family: var(--display); font-weight: 800; font-size: 1.22rem; letter-spacing: .03em; text-transform: uppercase; text-decoration: none; border: var(--rule); cursor: pointer; transition: transform .12s, box-shadow .12s, background-color .12s, color .12s; }
.btn::after { content: "→"; font-family: var(--body); font-weight: 600; transition: transform .15s; }
.btn:hover::after { transform: translateX(5px); }
.btn--primary { background: var(--grad); color: var(--ink); box-shadow: 6px 6px 0 var(--ink); }
.btn--primary:hover { transform: translate(3px, 3px); box-shadow: 3px 3px 0 var(--ink); }
.btn--primary:active { transform: translate(6px, 6px); box-shadow: 0 0 0 var(--ink); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--tint); }
.btn--dark { background: var(--ink); color: var(--paper); box-shadow: 6px 6px 0 var(--green); }
.btn--dark:hover { transform: translate(3px, 3px); box-shadow: 3px 3px 0 var(--green); }
.btn--sm { min-height: 42px; padding: 0 16px; font-size: 1.05rem; box-shadow: 4px 4px 0 var(--ink); }

/* ---------- Step indicator: inline row + fixed rail ---------- */
.steps { display: flex; flex-wrap: wrap; gap: 6px 0; margin-bottom: 30px; font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.sun .steps { color: var(--ink); }
.molten .steps { color: #fff; }
.molten .steps li.on span { background: #fff; color: var(--blue); }
.steps li { display: flex; align-items: center; }
.steps li + li::before { content: ""; width: 12px; height: 1.5px; background: currentColor; margin: 0 6px; }
.steps li span { padding: 2px 6px; border: 1.5px solid transparent; }
.steps li.on span { background: var(--ink); color: var(--paper); }
.rail { display: none; }
@media (min-width: 1280px) {
  .rail { display: block; position: fixed; left: 0; top: 70px; bottom: 0; width: 52px; z-index: 40; background: var(--paper); border-right: var(--rule); }
  .rail ol { display: flex; flex-direction: column; height: 100%; }
  .rail li { flex: 1; display: flex; align-items: center; justify-content: center; writing-mode: vertical-rl; transform: rotate(180deg); border-top: 1.5px solid var(--ink); font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); transition: background-color .35s, color .35s; }
  .rail li:first-child { border-bottom: 0; }
  .rail li.on { background: var(--cyan); color: var(--ink); }
  main, footer, .marquee { margin-left: 52px; }
  .steps { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; margin: 0; }
}

/* ---------- Hero ---------- */
.hero { padding-top: clamp(28px, 4vw, 52px); padding-bottom: clamp(40px, 5vw, 64px); overflow: hidden; }
.hero h1 { font-size: clamp(3.1rem, 8.2vw, 8rem); margin-top: 14px; line-height: 1.05; }
.hero h1 em { font-style: normal; }
/* the key word carries the brand cyan→blue gradient; the padding keeps stacked diacritics inside the painted area */
.hero h1 em, .hero h1 em .w > span { background-image: linear-gradient(90deg, var(--cyan), var(--blue)); -webkit-background-clip: text; background-clip: text; color: transparent; padding-top: .2em; margin-top: -.2em; }
.hero h1 > span:not(.w) { display: block; margin-top: .45em; font-size: .3em; font-weight: 800; line-height: 1.2; letter-spacing: .02em; color: var(--blue); max-width: 34ch; }
.w { display: inline-block; overflow: hidden; vertical-align: bottom; padding-top: .16em; margin-top: -.16em; }
.w > span { display: inline-block; animation: word .8s cubic-bezier(.2, .8, .2, 1) both; animation-delay: calc(var(--n) * 55ms); }
.hero .sub { font-size: 1.08rem; color: var(--ink-2); max-width: 58ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 18px 16px; margin-top: 26px; }
.hero-visual { margin-top: 28px; }
.hv-b, .hv-c { display: none; }
@media (min-width: 1000px) {
  .hero-copy { display: grid; grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr); column-gap: 44px; align-items: end; }
  .hero-copy .eyebrow { grid-column: 1 / -1; }
  .hero-side { padding-bottom: 10px; }
}
@media (max-width: 999px) { .hero-side { margin-top: 24px; } }

body[data-hero="b"] .hv-a, body[data-hero="c"] .hv-a { display: none; }
body[data-hero="b"] .hv-b { display: block; }
body[data-hero="c"] .hv-c { display: block; }
body[data-hero="b"] .hero-copy, body[data-hero="c"] .hero-copy { display: block; }
body[data-hero="b"] .hero-side, body[data-hero="c"] .hero-side { margin-top: 26px; }
body[data-hero="b"] .hero h1 { font-size: clamp(2.8rem, 5.6vw, 5.4rem); }
body[data-hero="c"] .hero h1 { font-size: clamp(3.4rem, 11.6vw, 12rem); line-height: 1.04; margin-top: 30px; }
@media (min-width: 1040px) {
  body[data-hero="b"] .hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
  body[data-hero="b"] .hero-visual { margin-top: 44px; }
}

.chips { display: grid; grid-template-columns: 1fr; margin-top: 36px; border-top: var(--rule); border-bottom: var(--rule); }
.chips li { padding: 12px 16px 14px 0; font-weight: 600; font-size: 16px; line-height: 1.4; border-bottom: 1.5px solid var(--ink); }
.chips li:last-child { border-bottom: 0; }
.chips i { display: block; font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--blue); margin-bottom: 4px; }
@media (min-width: 760px) {
  .chips { grid-template-columns: repeat(4, 1fr); }
  .chips li { border-bottom: 0; border-left: 1.5px solid var(--ink); padding-left: 16px; }
  .chips li:first-child { border-left: 0; padding-left: 0; }
}

/* Statement variant */
.chain { display: flex; flex-wrap: wrap; gap: 8px 0; border-top: var(--rule); padding-top: 20px; font-family: var(--display); font-weight: 800; font-size: 1.35rem; text-transform: uppercase; letter-spacing: .02em; }
.chain li { display: flex; align-items: center; }
.chain li + li::before { content: "→"; font-family: var(--body); margin: 0 12px; }
.chain li.hot { background: var(--cyan); padding: 0 8px; }
.chain li.hot::before { margin-left: 4px; }

/* ---------- Isometric drawings ---------- */
.iso-svg { width: 100%; height: auto; overflow: visible; }
.iso-svg .unit { animation: drop .75s cubic-bezier(.2, .8, .2, 1) both; animation-delay: calc(var(--i) * 130ms + 150ms); }
.iso-svg .conv { fill: none; stroke: var(--orange); stroke-width: 5; stroke-dasharray: 9 7; animation: dash .7s linear infinite; }
.iso-svg .data { fill: none; stroke: var(--ink); stroke-width: 1.5; stroke-dasharray: 2 5; animation: dash 1s linear infinite; }
.iso-svg .node { fill: var(--white); stroke: var(--ink); stroke-width: 2; }
.iso-svg .updot { fill: var(--cyan); stroke: var(--ink); stroke-width: 1.5; animation: rise 2.4s cubic-bezier(.4, 0, .6, 1) infinite; }
.iso-svg .ping { fill: none; stroke: var(--ink); stroke-width: 1.5; transform-box: fill-box; transform-origin: center; animation: ping 2.2s ease-out infinite; }
.iso-svg .ring { fill: none; stroke: var(--orange); stroke-width: 3; animation: blink 1.6s steps(1) infinite; }
.iso-svg .glow { animation: glow 1.8s ease-in-out infinite; }
.iso-svg .bus text { font: 600 12.5px var(--mono); letter-spacing: .16em; fill: var(--ink); }
.iso-svg .flag { animation: flag 4s steps(1) infinite; }
.iso-svg .flag path { fill: none; stroke: var(--ink); stroke-width: 1.5; }
.iso-svg .flag rect { fill: var(--yellow); stroke: var(--ink); stroke-width: 1.5; }
.iso-svg .flag text { font: 600 11px var(--mono); letter-spacing: .04em; fill: var(--ink); }
.iso-svg .plate { animation: float 4s ease-in-out infinite; animation-delay: calc(var(--i) * -.9s); }
.iso-svg .idx { font: 900 22px var(--display); fill: var(--ink); }

@keyframes dash { to { stroke-dashoffset: -16; } }
@keyframes rise { 0% { transform: translateY(0); opacity: 0; } 12% { opacity: 1; } 88% { opacity: 1; } 100% { transform: translateY(var(--len)); opacity: 0; } }
@keyframes ping { 0% { transform: scale(1); opacity: 1; } 100% { transform: scale(3.6); opacity: 0; } }
@keyframes glow { 0%, 100% { opacity: 1; } 50% { opacity: .6; } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@keyframes flag { 0%, 100% { opacity: 1; } 84% { opacity: 0; } 88% { opacity: 1; } 92% { opacity: 0; } 96% { opacity: 1; } }
@keyframes drop { from { opacity: 0; transform: translateY(-46px); } to { opacity: 1; transform: none; } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }
@keyframes word { from { transform: translateY(115%); } to { transform: none; } }
@keyframes marquee { to { transform: translateX(-50%); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

/* Process strip: station labels under the hero drawing, and the selector in the use-case section */
.strip { display: grid; grid-template-columns: repeat(5, 1fr); }
.strip li { position: relative; padding: 12px 14px 12px 0; border-top: var(--rule); }
.strip li + li { padding-left: 14px; border-left: 1.5px solid var(--ink); }
.strip svg { display: none; width: 44px; height: 44px; }
.strip svg * { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: square; stroke-linejoin: miter; }
.strip b { display: block; font-family: var(--display); font-weight: 800; font-size: 1.3rem; line-height: 1.1; text-transform: uppercase; letter-spacing: .01em; }
.strip small { display: block; font-size: 14px; line-height: 1.4; color: var(--ink-2); margin-top: 3px; }
.strip .temp { display: inline-flex; align-items: center; gap: 7px; margin-top: 8px; font: 600 11.5px var(--mono); letter-spacing: .02em; }
.strip .temp i { width: 11px; height: 11px; border: 1.5px solid var(--ink); }
.strip .pulse { position: absolute; top: 14px; right: 12px; width: 11px; height: 11px; background: var(--orange); border: 1.5px solid var(--ink); animation: blink 1.2s steps(1) infinite; }
.strip-note { margin-top: 10px; font: 500 11.5px var(--mono); color: var(--muted); }
.strip--light { border: var(--rule); border-bottom: 0; background: var(--white); }
.strip--light li { border-top: 0; padding: 12px 12px; cursor: pointer; transition: background-color .25s; }
.strip--light li + li { padding-left: 12px; border-left: var(--rule); }
.strip--light svg { display: block; width: 36px; height: 36px; margin-bottom: 6px; }
.strip--light b { font-size: 1.12rem; }
.strip--light .temp { display: none; }
.strip--light li:hover { background: var(--tint); }
.strip--light li.active { background: var(--green); }

/* ---------- Marquee ---------- */
.marquee { overflow: hidden; background: var(--green); border-top: var(--rule); border-bottom: var(--rule); }
.marquee-track { display: flex; width: max-content; animation: marquee 60s linear infinite; }
.marquee span { flex: 0 0 auto; padding: 12px 0; font-family: var(--display); font-weight: 800; font-size: 1.7rem; line-height: 1.1; text-transform: uppercase; letter-spacing: .02em; white-space: nowrap; }
.marquee span::after { content: "✕"; font-size: .6em; margin: 0 22px; vertical-align: .18em; }
.marquee:hover .marquee-track { animation-play-state: paused; }

/* ---------- Section 2: ledger ---------- */
.ledger { border-bottom: var(--rule); }
.lrow { display: grid; gap: 14px; padding: 26px 0; border-top: var(--rule); transition: background-color .2s; }
.lrow .num { font-family: var(--display); font-weight: 900; font-size: clamp(4rem, 8vw, 6.6rem); line-height: .86; color: transparent; -webkit-text-stroke: 2px var(--ink); transition: color .5s .2s; }
.lrow.in .num, .lrow:not(.rv) .num { color: var(--blue); }
.lhead h3 { font-size: clamp(1.5rem, 2.3vw, 1.95rem); }
.lhead .scope { margin-top: 8px; font: 500 12.5px/1.5 var(--mono); color: var(--blue); }
.lrow dl { margin: 0; display: grid; gap: 14px; }
.lrow dt { font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.lrow dd { margin: 0; font-size: 16px; line-height: 1.5; }
.lrow dd.kpi { font: 600 13.5px/1.55 var(--mono); }
@media (min-width: 760px) { .lrow dl { grid-template-columns: repeat(3, 1fr); gap: 24px; } }
@media (min-width: 1100px) {
  .lrow { grid-template-columns: 130px 290px 1fr; gap: 28px; align-items: start; padding: 30px 14px; margin: 0 -14px; }
  .lrow:hover { background: var(--tint); }
  .lrow:hover .num { color: var(--ink); }
  .lrow:hover dt { color: var(--ink); }
}

.approach { margin-top: clamp(40px, 6vw, 72px); background: var(--grey); border: var(--rule); box-shadow: 10px 10px 0 var(--ink); padding: clamp(22px, 3.4vw, 44px); display: grid; gap: 28px; align-items: center; }
.approach h3 { font-size: clamp(2rem, 3.6vw, 3.2rem); font-weight: 900; line-height: 1.04; margin: 14px 0 14px; }
.approach p { max-width: 50ch; }
.approach-fig { display: grid; grid-template-columns: minmax(150px, 230px) 1fr; gap: 20px; align-items: center; }
.approach-fig ol { counter-reset: lay; display: grid; gap: 0; }
.approach-fig li { counter-increment: lay; display: grid; grid-template-columns: 34px 1fr; gap: 10px; align-items: baseline; padding: 10px 0; border-top: 1.5px solid var(--ink); font-weight: 600; font-size: 16px; line-height: 1.4; }
.approach-fig li:first-child { border-top: 0; }
.approach-fig li::before { content: counter(lay); font: 900 1.7rem/1 var(--display); }
@media (min-width: 1000px) { .approach { grid-template-columns: 1fr 1.05fr; gap: 48px; } }
@media (max-width: 520px) { .approach-fig { grid-template-columns: 1fr; } .approach-fig #stack { max-width: 200px; } }

.badge { display: inline-block; padding: 3px 9px; border: 1.5px solid currentColor; background: var(--white); font: 600 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; }
.badge--tri { color: var(--blue); }
.badge--ave { color: var(--avenue-text); }
.badge--partner { color: var(--ink-2); }

/* ---------- Section 3: use cases ---------- */
.tabs { display: grid; grid-template-columns: repeat(2, 1fr); border: var(--rule); background: var(--ink); gap: 2px; }
.tabs button { appearance: none; border: 0; border-radius: 0; background: var(--paper); color: var(--ink); text-align: left; cursor: pointer; padding: 12px 14px 14px; min-height: 76px; font-family: var(--display); font-weight: 800; font-size: 1.22rem; line-height: 1.1; letter-spacing: .01em; text-transform: uppercase; transition: background-color .15s, color .15s; }
.tabs button i { display: block; font: 600 11px var(--mono); letter-spacing: .1em; color: var(--blue); margin-bottom: 6px; }
.tabs button:hover { background: var(--tint); }
.tabs button[aria-selected="true"] { background: var(--ink); color: var(--paper); }
.tabs button[aria-selected="true"] i { color: var(--green); }
.tabs button:focus-visible { outline-offset: -5px; outline-color: var(--cyan); }
@media (min-width: 720px) { .tabs { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1100px) { .tabs { grid-template-columns: repeat(6, 1fr); } }

.panel { background: var(--white); border: var(--rule); border-top: 0; }
.panel:not([hidden]) { animation: fadeUp .4s ease both; }
.panel-head { display: grid; }
.panel-head > div { padding: clamp(20px, 3vw, 40px); }
.panel-head h3 { font-size: clamp(2rem, 3.8vw, 3.4rem); font-weight: 900; line-height: 1.04; margin: 16px 0 16px; }
.panel-head .obj { max-width: 50ch; font-size: 1.05rem; }
.panel-head .obj b { display: block; font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.schematic { margin: 0; background: var(--tint); border-top: var(--rule); padding: 22px; display: flex; flex-direction: column; justify-content: center; }
.schematic svg { width: 100%; height: auto; }
.schematic .iso-svg { max-height: 320px; margin: 0 auto; }
.schematic svg .l { fill: none; stroke: var(--ink); stroke-width: 1.8; stroke-linejoin: miter; }
.schematic svg .d { stroke-dasharray: 5 5; animation: dash .9s linear infinite; }
.schematic svg .f { fill: none; stroke: var(--ink); stroke-width: 1; opacity: .55; }
.schematic svg .o { fill: none; stroke: var(--orange); stroke-width: 2.5; }
.schematic svg .run { stroke-dasharray: 10 6; animation: dash .5s linear infinite; }
.schematic svg text { font: 600 11px var(--mono); fill: var(--ink); letter-spacing: .04em; text-transform: uppercase; }
.schematic svg .bfwall { fill: var(--white); }
.schematic figcaption { margin-top: 14px; padding-top: 10px; border-top: 1.5px solid var(--ink); font-size: 14px; line-height: 1.5; }
@media (min-width: 900px) {
  .panel-head { grid-template-columns: 1fr minmax(340px, 460px); }
  .schematic { border-top: 0; border-left: var(--rule); }
}

.uc { border-top: var(--rule); }
.uc-head, .uc-row { display: grid; grid-template-columns: 1fr; gap: 6px; padding: 16px clamp(20px, 3vw, 40px); border-bottom: 1.5px solid var(--ink); }
.uc-row:last-child { border-bottom: 0; }
.uc-head { display: none; background: var(--ink); color: var(--paper); font: 600 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; padding-top: 9px; padding-bottom: 9px; }
.uc-row { transition: background-color .15s; }
.uc-row h4 { font: 600 1.05rem/1.35 var(--body); letter-spacing: 0; text-transform: none; }
.uc-row p { font-size: 16px; line-height: 1.5; }
.uc-row .in { font: 500 13px/1.6 var(--mono); color: var(--ink-2); }
.uc-row .in::before { content: "Dữ liệu chính — "; color: var(--ink); font-weight: 600; }
:lang(en) .uc-row .in::before { content: "Key data — "; }
.tag { display: inline-block; font: 600 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; padding: 3px 8px; border: 1.5px solid var(--ink); white-space: nowrap; color: var(--ink); }
.tag--quick { background: var(--green); }
.tag--deep { background: var(--orange); }
.tag--plant { background: var(--blue); color: #fff; }
@media (min-width: 900px) {
  .uc-head { display: grid; }
  .uc-head, .uc-row { grid-template-columns: minmax(200px, 1.1fr) 1.6fr 1.5fr 138px; gap: 24px; align-items: start; }
  .uc-row:hover { background: var(--tint); }
  .uc-row .in::before { content: none; }
}

/* Reference results: oversized numerals on ruled columns */
.refs-block { margin-top: clamp(40px, 6vw, 72px); }
.refs-label { font: 600 12px var(--mono); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 14px; }
.refs { display: grid; grid-template-columns: repeat(2, 1fr); border-top: var(--rule); border-bottom: var(--rule); }
.refs li { padding: 18px 14px 20px; border-left: 1.5px solid var(--ink); border-top: 1.5px solid var(--ink); }
.refs li:nth-child(odd) { border-left: 0; padding-left: 0; }
.refs li:nth-child(-n+2) { border-top: 0; }
.refs strong { display: block; font-family: var(--display); font-weight: 900; font-size: clamp(3.2rem, 6vw, 5.6rem); line-height: .95; letter-spacing: -.01em; font-variant-numeric: tabular-nums; white-space: nowrap; }
.refs li:first-child strong { color: var(--blue); }
.refs span { display: block; margin-top: 10px; font-size: 14.5px; line-height: 1.4; color: var(--ink-2); }
.footnote { margin-top: 12px; font: 500 12px/1.6 var(--mono); color: var(--ink-2); max-width: 100ch; }
.footnote::before { content: "* "; color: var(--blue); font-weight: 600; }
@media (min-width: 1100px) {
  .refs-block .refs { grid-template-columns: repeat(6, 1fr); }
  .refs-block .refs li { border-top: 0; border-left: 1.5px solid var(--ink); padding-left: 14px; }
  .refs-block .refs li:first-child { border-left: 0; padding-left: 0; }
}
@media (min-width: 600px) and (max-width: 1099px) {
  .refs-block .refs { grid-template-columns: repeat(3, 1fr); }
  .refs-block .refs li { border-left: 1.5px solid var(--ink); padding-left: 14px; border-top: 0; }
  .refs-block .refs li:nth-child(3n+1) { border-left: 0; padding-left: 0; }
  .refs-block .refs li:nth-child(n+4) { border-top: 1.5px solid var(--ink); }
}

/* ---------- Section 4: three bins + safety notice ---------- */
.bins { display: grid; border: var(--rule); background: var(--white); }
.col { padding: 0 0 8px; border-top: var(--rule); }
.col:first-child { border-top: 0; }
.col > .tag { display: block; border: 0; border-bottom: var(--rule); padding: 10px 22px; font: 900 1.9rem/1.1 var(--display); letter-spacing: .02em; }
.col h3 { margin: 22px 22px 10px; font-size: 1.45rem; }
.col .why { margin: 0 22px; font-size: 15.5px; line-height: 1.5; color: var(--ink-2); }
.col ul { margin: 18px 22px 12px; border-top: 1.5px solid var(--ink); counter-reset: it; }
.col li { counter-increment: it; display: grid; grid-template-columns: 30px 1fr; padding: 9px 0; border-bottom: 1px solid #cfcfcf; font-weight: 600; font-size: 15.5px; line-height: 1.4; }
.col li::before { content: counter(it, decimal-leading-zero); font: 500 11.5px/1.9 var(--mono); color: var(--muted); }
.col li:last-child { border-bottom: 0; }
@media (min-width: 900px) {
  .bins { grid-template-columns: repeat(3, 1fr); }
  .col { border-top: 0; border-left: var(--rule); }
  .col:first-child { border-left: 0; }
}
.hazard { margin-top: 28px; display: grid; grid-template-columns: clamp(28px, 6vw, 84px) 1fr; border: var(--rule); background: var(--white); }
.hazard::before { content: ""; background: repeating-linear-gradient(-45deg, var(--yellow) 0 14px, var(--ink) 14px 28px); border-right: var(--rule); }
.hazard span { padding: 18px 22px; font-weight: 600; font-size: 1.1rem; line-height: 1.45; }

/* ---------- Section 5: backbone ---------- */
.backbone { position: relative; display: grid; grid-template-columns: 1fr; counter-reset: bb; }
.backbone li { position: relative; padding: 4px 0 26px 66px; opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; transition-delay: calc(var(--i) * 110ms); }
.backbone.in li { opacity: 1; transform: none; }
.backbone li::before { counter-increment: bb; content: counter(bb); position: absolute; left: 0; top: 0; width: 46px; height: 46px; background: var(--ink); color: var(--paper); font: 900 1.7rem/46px var(--display); text-align: center; z-index: 1; }
.backbone li::after { content: ""; position: absolute; left: 22px; top: 46px; bottom: 0; width: 2px; background: var(--ink); }
.backbone li:last-child::after { content: none; }
.backbone li.ai::before { background: var(--blue); color: #fff; }
.backbone li.exec::before { background: var(--orange); color: var(--ink); box-shadow: 0 0 0 2px var(--ink), 5px 5px 0 2px var(--ink); }
.backbone h3 { font-size: 1.4rem; }
.backbone .sys { display: inline-block; margin-top: 6px; padding: 2px 6px; background: var(--ink); color: var(--paper); font: 600 11px/1.5 var(--mono); letter-spacing: .03em; }
.backbone li.exec .sys { background: var(--orange); color: var(--ink); border: 1.5px solid var(--ink); }
.backbone p { font-size: 15px; line-height: 1.5; margin-top: 8px; }
@media (min-width: 1100px) {
  .backbone { grid-template-columns: repeat(7, 1fr); }
  .backbone li { padding: 66px 18px 0 0; }
  .backbone li::after { left: 46px; right: 0; top: 22px; bottom: auto; width: auto; height: 2px; }
  .backbone::after { content: ""; position: absolute; top: 15px; left: 0; width: 16px; height: 16px; background: var(--orange); border: 2px solid var(--ink); z-index: 2; animation: travel 8s linear infinite; }
}
@keyframes travel { 0% { left: 0; opacity: 0; } 3% { opacity: 1; } 96% { opacity: 1; } 100% { left: calc(100% - 16px); opacity: 0; } }
.loop { margin-top: 28px; padding: 12px 16px; border: 2px dashed var(--ink); font: 500 13px/1.6 var(--mono); }
.loop::before { content: "↺ "; font-weight: 600; }
.deploy { margin-top: 40px; display: grid; border-top: var(--rule); }
.deploy div { padding: 18px 0; border-bottom: 1.5px solid var(--ink); }
.deploy h3 { font: 600 12px var(--mono); letter-spacing: .1em; margin-bottom: 8px; }
.deploy p { font-size: 15.5px; line-height: 1.5; }
@media (min-width: 900px) {
  .deploy { grid-template-columns: repeat(3, 1fr); }
  .deploy div { border-bottom: 0; padding: 18px 22px 0; border-left: 1.5px solid var(--ink); }
  .deploy div:first-child { border-left: 0; padding-left: 0; }
}

/* ---------- Section 6: execution layer ---------- */
.blocks { border-bottom: var(--rule); }
.block { display: grid; gap: 18px; padding: 30px 0; border-top: var(--rule); }
.block .letter { font-family: var(--display); font-weight: 900; font-size: clamp(5rem, 10vw, 9rem); line-height: .8; color: transparent; -webkit-text-stroke: 2px var(--avenue); transition: color .6s .15s; }
.block.in .letter, .block:not(.rv) .letter { color: var(--avenue); }
.block h3 { font-size: clamp(1.9rem, 3vw, 2.5rem); font-weight: 900; margin: 12px 0 8px; }
.block .what { font-size: 15.5px; color: var(--ink-2); }
.block .body p, .block .body li { font-size: 16px; line-height: 1.55; }
.block .body h4 { color: var(--muted); margin-bottom: 6px; }
.block .body > * + * { margin-top: 18px; }
.dash { display: grid; gap: 0 24px; border-top: 1.5px solid var(--ink); }
.dash li { padding: 8px 0 8px 22px; position: relative; border-bottom: 1px solid #cfcfcf; }
.dash li::before { content: ""; position: absolute; left: 0; top: 1em; width: 10px; height: 2px; background: var(--avenue); }
@media (min-width: 640px) { .dash { grid-template-columns: 1fr 1fr; } }
.flow { display: flex; flex-wrap: wrap; gap: 8px 0; font: 600 12px var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.flow li { display: flex; align-items: center; }
.flow li + li::before { content: ""; width: 14px; height: 2px; background: var(--ink); }
.flow li span { display: inline-block; padding: 6px 10px; border: 1.5px solid var(--ink); background: var(--white); animation: step 7s steps(1) infinite; animation-delay: calc(var(--i) * 1s); }
@keyframes step { 0%, 14.3%, 100% { background: var(--white); } 0.1%, 14.2% { background: var(--green); } }
.ba { display: grid; gap: 12px; }
.ba > div { border: 1.5px solid var(--ink); padding: 12px 14px; background: var(--white); }
.ba b { display: block; font: 600 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.ba code { display: block; font: 500 13px/1.7 var(--mono); overflow-wrap: anywhere; }
.ba > div:first-child code { color: var(--ink-2); text-decoration: line-through; text-decoration-color: var(--avenue); text-decoration-thickness: 2px; }
.ba .after { border: 2px solid var(--avenue); box-shadow: 6px 6px 0 var(--avenue); }
.ba .after b { color: var(--avenue-text); }
@media (min-width: 900px) { .ba { grid-template-columns: 1fr 1fr; gap: 22px; } }
@media (min-width: 1000px) { .block { grid-template-columns: 120px 280px 1fr; gap: 32px; padding: 40px 0; } }
.why-avenue { margin-top: 30px; padding: 18px 22px; border: 2px solid var(--avenue); font-size: 1.05rem; line-height: 1.5; background: var(--white); }
.why-avenue b { display: block; font: 600 11.5px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--avenue-text); margin-bottom: 6px; }

/* ---------- Section 7: compact route ---------- */
#roadmap { padding-top: clamp(50px, 6vw, 82px); padding-bottom: clamp(50px, 6vw, 82px); }
#roadmap .sec-head { margin-bottom: 26px; }
#roadmap h2 { font-size: clamp(2rem, 4vw, 3.4rem); max-width: 25ch; }
.phases { display: grid; gap: 14px; }
.phase { position: relative; display: flex; flex-direction: column; min-width: 0; background: var(--white); border: var(--rule); border-top: 5px solid var(--cyan); padding: 12px 16px 14px; transition: transform .2s, box-shadow .2s; }
.phase:nth-child(3n+2) { border-top-color: var(--green); }
.phase.phase--gate { border-top-color: var(--orange); }
.phase:hover { transform: translateY(-2px); box-shadow: 3px 3px 0 var(--ink); }
.phase .p { display: flex; align-items: baseline; justify-content: space-between; font: 600 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; border-bottom: 1px solid #b9c3cd; padding-bottom: 3px; }
.phase .p b { font: 900 2.45rem/.9 var(--display); letter-spacing: 0; }
.phase h3 { font-size: 1.38rem; margin: 9px 0 6px; }
.phase p { font-size: 14px; line-height: 1.42; color: var(--ink-2); }
.phase .out { margin-top: auto; padding-top: 10px; color: var(--ink); font-weight: 600; }
.phase .out::before { content: "→ "; color: var(--blue); }
.phase .plug { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 9px; }
.phase .plug span { font: 600 10px var(--mono); border: 1px solid var(--ink); padding: 2px 6px; }
.roadmap-tools { margin-top: 18px; border-top: var(--rule); }
.roadmap-tools summary { cursor: pointer; padding: 13px 0; font: 600 12px var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.roadmap-tools summary:hover { color: var(--blue); }
.overlay { display: grid; gap: 8px; padding: 4px 0 0; }
.bar { min-width: 0; font: 800 1.15rem/1.15 var(--display); text-transform: uppercase; letter-spacing: .02em; padding: 10px 12px; background: var(--white); border: var(--rule); }
.bar small { display: block; font: 500 11px/1.4 var(--mono); text-transform: none; letter-spacing: 0; color: var(--ink-2); margin-top: 3px; }
.bar--moc { background: var(--orange); }
.bar--moc small { color: var(--ink); }
@media (min-width: 680px) { .phases, .overlay { grid-template-columns: repeat(2, minmax(0, 1fr)); } .bar--wide { grid-column: 1 / -1; } }
@media (min-width: 1080px) {
  .phases { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .phase:nth-child(3n+1)::after, .phase:nth-child(3n+2)::after { content: "→"; position: absolute; z-index: 2; top: 16px; right: -14px; width: 26px; height: 26px; border: 1.5px solid var(--ink); background: var(--grey); color: var(--blue); font: 700 19px/23px var(--body); text-align: center; }
}

/* ---------- Section 8: prerequisites ---------- */
.prereq { display: grid; gap: 32px; }
.check { border-top: var(--rule); }
.check li { position: relative; display: grid; grid-template-columns: 40px 1fr; gap: 16px; padding: 18px 0; border-bottom: 1.5px solid var(--ink); }
.check li::before { content: ""; width: 34px; height: 34px; border: var(--rule); background: var(--white); transition: background-color .3s .25s; }
.check li::after { content: ""; position: absolute; left: 11px; top: 22px; width: 11px; height: 20px; border-right: 4px solid var(--ink); border-bottom: 4px solid var(--ink); transform: rotate(45deg) scale(0); transform-origin: 70% 80%; transition: transform .35s cubic-bezier(.3, 1.6, .5, 1) .3s; }
.check li.in::before, .check li:not(.rv)::before { background: var(--green); }
.check li.in::after, .check li:not(.rv)::after { transform: rotate(45deg) scale(1); }
.check b { display: block; font: 800 1.45rem/1.15 var(--display); text-transform: uppercase; letter-spacing: .01em; }
.check span { display: block; margin-top: 4px; font-size: 15.5px; color: var(--ink-2); }
.review { align-self: start; border: var(--rule); background: var(--white); box-shadow: 10px 10px 0 var(--ink); padding: 26px 24px; }
.review h3 { font-size: 1.9rem; font-weight: 900; line-height: 1.05; margin-bottom: 12px; }
.review p { font-size: 16px; }
@media (min-width: 900px) { .prereq { grid-template-columns: 1.4fr 1fr; gap: 64px; } }

/* ---------- Section 9: CTA / form ---------- */
.cta-grid { display: grid; gap: 44px; }
.molten h2 { font-size: clamp(2.6rem, 6vw, 5.6rem); max-width: 12ch; }
.molten .eyebrow::before { border-color: #fff; }
.sun .eyebrow::before { background: var(--ink); }
.outs { margin-top: 30px; border-top: 2px solid #fff; }
.outs li { display: grid; grid-template-columns: 60px 1fr; align-items: baseline; padding: 10px 0; border-bottom: 2px solid #fff; font-weight: 600; font-size: 1.1rem; }
.outs b { font: 900 2.2rem/1 var(--display); }
form { background: var(--paper); color: var(--ink); border: var(--rule); box-shadow: 12px 12px 0 var(--ink); padding: clamp(20px, 3vw, 34px); display: grid; gap: 18px; }
.row2 { display: grid; gap: 18px; }
@media (min-width: 560px) { .row2 { grid-template-columns: 1fr 1fr; } }
label, legend { display: block; font: 600 11.5px var(--mono); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 6px; padding: 0; }
input[type="text"], input[type="email"], input[type="tel"], select { width: 100%; min-height: 50px; padding: 10px 12px; font: 16px var(--body); background: var(--white); color: var(--ink); border: var(--rule); border-radius: 0; transition: box-shadow .12s, background-color .12s; }
input[type="text"]:focus, input[type="email"]:focus, input[type="tel"]:focus, select:focus { outline: none; background: var(--tint); box-shadow: 4px 4px 0 var(--ink); }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.opts { display: flex; flex-wrap: wrap; gap: 8px; }
.opts label { margin: 0; font: 500 14.5px var(--body); letter-spacing: 0; text-transform: none; display: inline-flex; align-items: center; gap: 8px; border: 1.5px solid var(--ink); background: var(--white); padding: 8px 12px; min-height: 44px; cursor: pointer; transition: background-color .12s; }
.opts input { width: 18px; height: 18px; accent-color: var(--ink); margin: 0; }
.opts label:has(input:checked) { background: var(--green); font-weight: 600; }
.opts label:has(input:focus-visible) { outline: 3px solid var(--blue); outline-offset: 2px; }
form .btn { justify-self: start; }
.form-note { font: 500 12px var(--mono); color: var(--ink-2); }
.form-status { font-size: 15px; padding: 12px 14px; border: var(--rule); background: var(--tint); }
.form-status[hidden] { display: none; }
@media (min-width: 1000px) { .cta-grid { grid-template-columns: 1fr 1.1fr; gap: 72px; align-items: start; } }

/* the gradient strip that closes every page of the brand guideline */
footer { border-top: 8px solid; border-image: var(--grad) 1; padding: 28px 0 34px; font-size: 14px; line-height: 1.5; color: var(--ink-2); }
footer a { width: fit-content; text-decoration-thickness: 1px; text-underline-offset: 3px; overflow-wrap: anywhere; }
footer a:hover { color: var(--blue); }
.footer-top { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-bottom: 20px; border-bottom: var(--rule); }
.footer-lockup { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.footer-lockup .logo-tri { height: 42px; }
.footer-lockup .logo-ave { height: 25px; }
.footer-lockup span { font: 500 11px var(--mono); color: var(--muted); white-space: nowrap; }
.footer-top > strong { max-width: 48ch; font: 600 12px/1.5 var(--mono); text-align: right; color: var(--ink); }
.footer-grid { display: grid; grid-template-columns: 1.25fr 1fr 1.15fr; }
.footer-grid > div { min-width: 0; padding: 22px 24px 24px; }
.footer-grid > div:first-child { padding-left: 0; }
.footer-grid > div + div { border-left: 1.5px solid var(--ink); }
.footer-grid h2 { margin: 0 0 12px; font: 800 1.35rem/1.1 var(--display); letter-spacing: .02em; text-transform: uppercase; color: var(--ink); }
.footer-office address { max-width: 42ch; font-style: normal; }
.footer-map { display: inline-block; margin-top: 8px; font-weight: 600; color: var(--blue); }
.footer-office-links { display: grid; justify-items: start; gap: 2px; margin-top: 16px; padding-top: 12px; border-top: 1.5px solid var(--ink); }
.footer-contacts .footer-person { display: grid; justify-items: start; gap: 2px; padding: 10px 0; border-top: 1.5px solid var(--ink); }
.footer-contacts .footer-person:first-of-type { border-top: 0; padding-top: 0; }
.footer-person strong { color: var(--ink); font-weight: 600; }
.footer-person strong span { margin-left: 5px; font: 600 10px var(--mono); text-transform: uppercase; color: var(--blue); }
footer .legal { border-top: 1.5px solid var(--ink); padding-top: 13px; font: 500 11px/1.5 var(--mono); color: var(--muted); }
@media (max-width: 999px) {
  .footer-top { align-items: flex-start; flex-direction: column; gap: 10px; }
  .footer-top > strong { text-align: left; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:nth-child(2) { padding-right: 0; }
  .footer-grid > div:last-child { grid-column: 1 / -1; padding: 18px 0 20px; border-left: 0; border-top: 1.5px solid var(--ink); }
  .footer-contacts .footer-person { grid-template-columns: minmax(130px, .8fr) 1.2fr 1fr; align-items: baseline; gap: 10px; }
}
@media (max-width: 599px) {
  .footer-lockup .logo-tri { height: 38px; }
  .footer-lockup .logo-ave { height: 22px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > div, .footer-grid > div:nth-child(2), .footer-grid > div:last-child { grid-column: auto; padding: 18px 0; border-left: 0; border-top: 1.5px solid var(--ink); }
  .footer-grid > div:first-child { border-top: 0; }
  .footer-contacts .footer-person { grid-template-columns: 1fr; gap: 2px; }
}

/* ---------- Event announcement ---------- */
.event-dialog { width: min(1100px, calc(100% - 32px)); max-height: calc(100dvh - 32px); padding: 0; border: var(--rule); border-radius: 0; background: var(--white); color: var(--ink); box-shadow: 12px 12px 0 var(--ink); overflow: auto; font-family: var(--body); }
.event-dialog::backdrop { background: rgb(0 20 37 / 75%); }
.event-topline { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 50px; padding: 5px 0 0 20px; border-bottom: var(--rule); background: var(--white); font: 600 11px var(--mono); letter-spacing: .05em; text-transform: uppercase; }
.event-topline > span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.event-topline::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 5px; background: var(--grad); }
.event-controls { display: flex; align-items: stretch; align-self: stretch; flex: 0 0 auto; }
.event-lang { display: flex; align-items: center; gap: 2px; padding: 0 10px; border-left: 1.5px solid var(--ink); }
.event-lang button { min-width: 36px; padding: 5px 6px; border: 0; border-radius: 0; background: transparent; color: var(--ink); font: 600 11px var(--mono); cursor: pointer; }
.event-lang button[aria-pressed="true"] { background: var(--ink); color: var(--white); }
.event-lang button:hover:not([aria-pressed="true"]) { background: var(--tint); }
.event-close { align-self: stretch; width: 50px; border: 0; border-left: var(--rule); border-radius: 0; background: var(--white); color: var(--ink); font: 400 30px/1 var(--body); cursor: pointer; }
.event-close:hover, .event-close:focus-visible { background: var(--tint); }
.event-body { display: grid; grid-template-columns: 1fr 1.12fr; }
.event-lead { display: flex; flex-direction: column; justify-content: center; padding: clamp(22px, 3vw, 38px); border-right: var(--rule); background-color: #ecf6fb; background-image: radial-gradient(#b6d9ea 1px, transparent 1px); background-size: 22px 22px; color: var(--ink); }
.event-kicker { align-self: flex-start; padding: 7px 11px; border: 1.5px solid var(--ink); background: var(--green); font: 600 10px/1.3 var(--mono); letter-spacing: .04em; text-transform: uppercase; transform: rotate(-1deg); }
.event-lead h2 { max-width: 18ch; margin: 20px 0 12px; font: 800 clamp(1.9rem, 3vw, 2.5rem)/1.08 var(--body); letter-spacing: -.04em; }
.event-lead h2 span { display: inline-block; padding: 1px 8px 3px; background: var(--grad); }
.event-lead > p:not(.event-kicker) { max-width: 48ch; font-size: 15px; line-height: 1.45; }
.event-lead .event-summary { margin-top: 12px; color: var(--ink-2); }
.event-iso { width: 100%; margin: 18px 0 0; padding: 6px 8px; border: 1.5px solid var(--ink); background: var(--white); color: var(--ink); box-shadow: 5px 5px 0 var(--ink); }
.event-iso svg { width: 100%; height: min(15dvh, 132px); }
.event-dialog[open] .event-iso-stage { animation: event-stage-float 4s ease-in-out infinite; }
.event-dialog[open] .event-iso-stage--2 { animation-delay: -.8s; }
.event-dialog[open] .event-iso-stage--3 { animation-delay: -1.6s; }
.event-dialog[open] .event-iso-flow { animation: event-flow .7s linear infinite; }
.event-dialog[open] .event-iso-nodes rect { animation: event-node-pulse 2.4s ease-in-out infinite; }
.event-dialog[open] .event-iso-nodes rect:nth-child(2) { animation-delay: -.8s; }
.event-dialog[open] .event-iso-nodes rect:nth-child(3) { animation-delay: -1.6s; }
@keyframes event-stage-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }
@keyframes event-flow { to { stroke-dashoffset: -11; } }
@keyframes event-node-pulse { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }
.event-iso figcaption { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; padding-top: 6px; border-top: 1.5px solid var(--ink); font: 600 10px/1.3 var(--mono); letter-spacing: .02em; text-align: center; text-transform: uppercase; }
.event-details { display: flex; flex-direction: column; justify-content: center; padding: clamp(22px, 3vw, 38px); }
.event-ticket { display: grid; grid-template-columns: .95fr 1.55fr .55fr; border: 1.5px solid var(--ink); background: var(--white); box-shadow: 5px 5px 0 var(--green); }
.event-ticket > div { min-width: 0; padding: 13px 12px; }
.event-ticket > div + div { border-left: 1.5px dashed var(--ink); }
.event-ticket small { display: block; margin-bottom: 5px; font: 600 10px var(--mono); letter-spacing: .08em; color: var(--blue); }
.event-ticket strong { display: block; font-size: 13px; line-height: 1.25; overflow-wrap: anywhere; }
.event-ticket .event-booth { display: inline-block; padding: 2px 8px; background: var(--green); font: 900 1.4rem/1 var(--display); }
.event-details-label { margin-top: 28px; padding-bottom: 8px; border-bottom: var(--rule); font: 600 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.event-details dl { margin: 0 0 20px; }
.event-details dl > div { display: grid; grid-template-columns: 100px 1fr; gap: 12px; padding: 12px 0; border-bottom: 1.5px solid var(--ink); }
.event-details dt { font: 600 11px/1.5 var(--mono); letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
.event-details dd { margin: 0; font-size: 14px; line-height: 1.4; }
.event-actions { display: flex; flex-wrap: wrap; gap: 9px; }
.event-actions .btn { min-height: 42px; padding: 0 14px; border-radius: 999px; box-shadow: none; font: 600 13px var(--body); text-transform: none; white-space: nowrap; }
.event-actions .btn::after { display: none; }
.event-actions .btn:hover { transform: translateY(-2px); box-shadow: 2px 2px 0 var(--ink); }
.event-hint { margin-top: 10px; font: 500 11px var(--mono); color: var(--muted); }
@media (max-height: 650px) and (min-width: 700px) {
  .event-lead, .event-details { padding-top: 18px; padding-bottom: 18px; }
  .event-iso { margin-top: 10px; }
  .event-iso svg { height: 85px; }
  .event-details-label { margin-top: 16px; }
  .event-details dl > div { padding: 8px 0; }
}
@media (min-width: 700px) and (max-width: 950px) {
  .event-lead, .event-details { padding: 20px; }
  .event-lead h2 { font-size: 1.9rem; }
  .event-iso svg { height: 90px; }
  .event-ticket { grid-template-columns: 1fr 1.5fr .5fr; }
  .event-ticket > div { padding: 9px 7px; }
  .event-ticket strong { font-size: 11px; }
  .event-details dl > div { grid-template-columns: 88px 1fr; gap: 9px; }
}
@media (max-width: 699px) {
  .event-dialog { width: calc(100% - 20px); max-height: calc(100dvh - 20px); box-shadow: 6px 6px 0 var(--ink); }
  .event-body { grid-template-columns: 1fr; }
  .event-lead { padding: 14px 18px; border-right: 0; border-bottom: var(--rule); }
  .event-lead h2 { margin: 10px 0 6px; font-size: clamp(1.65rem, 7vw, 2rem); }
  .event-lead .event-summary { display: none; }
  .event-iso { margin-top: 10px; }
  .event-iso svg { height: 58px; }
  .event-details { padding: 16px 18px; }
  .event-actions { order: 1; margin-top: 18px; }
  .event-details-label { order: 2; margin-top: 18px; }
  .event-details dl { order: 3; margin-bottom: 0; }
  .event-hint { display: none; }
}
@media (max-width: 430px) {
  .event-topline { padding-left: 9px; font-size: 9px; }
  .event-lang { padding: 0 4px; }
  .event-lang button { min-width: 30px; }
  .event-close { width: 42px; }
  .event-ticket > div { padding: 8px 5px; }
  .event-ticket strong { font-size: 10px; }
  .event-details dl > div { grid-template-columns: 1fr; gap: 2px; }
  .event-actions .btn { width: 100%; }
}

/* ---------- Scroll reveal (classes added by JS only) ---------- */
.rv { opacity: 0; transform: translateY(26px); transition: opacity .55s ease, transform .6s cubic-bezier(.2, .7, .2, 1); }
.rv.in { opacity: 1; transform: none; }
.sec-head.rv { opacity: 1; transform: none; }
.sec-head.rv h2 { clip-path: inset(0 100% 0 0); transition: clip-path .9s cubic-bezier(.7, 0, .2, 1); }
.sec-head.rv.in h2 { clip-path: inset(-10% 0 -10% 0); }
.sec-head.rv .eyebrow, .sec-head.rv .byline, .sec-head.rv .lede { opacity: 0; transition: opacity .6s .3s; }
.sec-head.rv.in .eyebrow, .sec-head.rv.in .byline, .sec-head.rv.in .lede { opacity: 1; }

/* ---------- Responsive ---------- */
@media (min-width: 1100px) { .lang { margin-left: 0; } }
@media (max-width: 1099px) { .nav { display: none; } }
@media (max-width: 899px) {
  .strip:not(.strip--light) { grid-template-columns: 1fr; margin-top: 8px; }
  .strip:not(.strip--light) li { display: grid; grid-template-columns: 44px 1fr; column-gap: 14px; align-items: center; padding: 12px 0; border-left: 0; border-top: 1.5px solid var(--ink); }
  .strip:not(.strip--light) li:first-child { border-top: var(--rule); }
  .strip:not(.strip--light) li svg { display: block; grid-row: span 3; }
  .strip:not(.strip--light) .temp { margin-top: 4px; }
  .strip .pulse { top: 16px; right: 4px; }
  .strip--light li, .strip--light li + li { padding: 8px 5px; }
  .strip--light small { display: none; }
  .strip--light b { font-size: .86rem; line-height: 1.15; }
  .strip--light svg { width: 28px; height: 28px; }
  .iso-svg .flag text { font-size: 16px; }
}
@media (max-width: 559px) {
  .lockup-by { display: none; }
  .site-header .logo-tri { height: 44px; }
  .site-header .logo-ave { height: 17px; }
  .lang a { padding: 6px 6px; }
  .site-header .wrap { flex-wrap: wrap; gap: 4px 10px; padding-top: 8px; padding-bottom: 8px; }
  .btn { width: 100%; font-size: 1.1rem; padding: 0 14px; }
  .site-header .btn { display: none; }
  body { font-size: 16.5px; }
  .marquee span { font-size: 1.3rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .backbone li, .rv { opacity: 1; transform: none; }
  .iso-svg .updot, .iso-svg .ping, .backbone::after { display: none; }
}