:root {
  --night: #06130e;
  --deep: #092219;
  --green: #0f6548;
  --emerald: #00c77b;
  --lime: #a9ff4f;
  --lime-soft: #d7ff9f;
  --paper: #f3f6f4;
  --white: #ffffff;
  --ink: #0d2018;
  --muted: #66766e;
  --line: #d9e2dd;
  --shell: min(1280px, calc(100% - 64px));
  --shadow: 0 24px 70px rgba(6, 19, 14, .1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 82px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Inter, "Microsoft YaHei", "PingFang SC", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; }
::selection { background: var(--lime); color: var(--night); }

.skip-link { position: fixed; z-index: 999; top: 8px; left: 8px; padding: 10px 14px; background: var(--lime); color: var(--night); font-weight: 800; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
.section-shell, .header-shell, .footer-shell { width: var(--shell); margin: 0 auto; }

.site-header { position: fixed; z-index: 100; top: 0; right: 0; left: 0; border-bottom: 1px solid rgba(12, 37, 26, .1); background: rgba(249, 251, 250, .95); color: var(--ink); backdrop-filter: blur(18px); transition: box-shadow .2s ease; }
.site-header.is-scrolled { box-shadow: 0 12px 34px rgba(6, 19, 14, .09); }
.header-shell { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { min-width: 310px; display: flex; align-items: center; gap: 13px; }
.brand-seal { width: 42px; height: 42px; flex: 0 0 auto; display: grid; place-items: center; border: 1px solid var(--green); border-radius: 50%; color: var(--green); font-family: SimSun, STSong, serif; font-size: 24px; }
.brand-name { display: grid; gap: 3px; }
.brand-name strong { font-family: SimSun, STSong, serif; font-size: 17px; letter-spacing: .12em; white-space: nowrap; }
.brand-name small { color: #89968f; font: 6px/1.2 Consolas, monospace; letter-spacing: .16em; }
.desktop-nav { display: flex; align-items: center; gap: 28px; margin-left: auto; }
.desktop-nav a { position: relative; display: grid; gap: 3px; padding: 26px 0 22px; text-align: center; }
.desktop-nav a::after { position: absolute; right: 0; bottom: 0; left: 0; height: 2px; background: var(--emerald); content: ""; transform: scaleX(0); transition: transform .2s ease; }
.desktop-nav a:hover::after { transform: scaleX(1); }
.desktop-nav span { font-size: 12px; font-weight: 700; }
.desktop-nav small { color: #9aa59f; font: 6px Consolas, monospace; letter-spacing: .12em; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.language-switch { height: 30px; display: flex; align-items: center; gap: 5px; border: 1px solid #d8e0dc; border-radius: 18px; padding: 3px 5px; background: #fff; color: #9aa59f; }
.language-switch button { min-width: 27px; height: 22px; border: 0; border-radius: 12px; padding: 0 6px; background: transparent; color: inherit; cursor: pointer; font-size: 10px; font-weight: 800; }
.language-switch button[aria-pressed="true"] { background: var(--night); color: #fff; }
.language-switch > span { font-size: 8px; }
.login-link { font-size: 12px; font-weight: 700; }
.header-cta { height: 42px; display: inline-flex; align-items: center; gap: 20px; border-radius: 6px; padding: 0 17px; background: var(--night); color: #fff; font-size: 11px; font-weight: 800; }
.header-cta b { color: var(--lime); }
.menu-button, .mobile-menu { display: none; }

.hero { position: relative; min-height: 850px; overflow: hidden; padding-top: 78px; background: #06150f; color: #fff; }
.hero-backdrop { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(4, 17, 12, .99) 0%, rgba(4, 17, 12, .92) 42%, rgba(4, 17, 12, .58) 100%), url("/static/brand_portal/assets/hero-stadium.png") center right / cover no-repeat; opacity: .88; }
.hero-grid { position: absolute; inset: 0; opacity: .18; background-image: linear-gradient(rgba(169,255,79,.13) 1px, transparent 1px), linear-gradient(90deg, rgba(169,255,79,.13) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(to bottom, #000 0%, rgba(0,0,0,.4) 70%, transparent 100%); }
.hero-shell { position: relative; min-height: 772px; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(390px, .75fr); grid-template-rows: 1fr auto; gap: 52px 70px; align-items: center; padding-top: 54px; padding-bottom: 38px; }
.hero-copy { max-width: 740px; }
.institution-line { display: flex; align-items: center; gap: 12px; color: var(--lime); font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.institution-line i { width: 34px; height: 1px; background: var(--lime); }
.system-tag { margin: 28px 0 0; color: rgba(255,255,255,.42); font: 9px Consolas, monospace; letter-spacing: .26em; }
.hero h1 { display: grid; gap: 13px; margin: 17px 0 0; font-size: clamp(56px, 6vw, 88px); line-height: .98; letter-spacing: -.055em; }
.hero h1 > span { background: linear-gradient(105deg, #fff 18%, #dfffc0 56%, var(--lime) 100%); background-clip: text; -webkit-background-clip: text; color: transparent; }
.hero h1 small { color: #fff; font: 700 clamp(17px, 2vw, 26px)/1.2 Consolas, monospace; letter-spacing: .11em; }
.hero-lead { max-width: 690px; margin: 28px 0 0; color: rgba(255,255,255,.62); font-size: 15px; line-height: 2; }
.hero-actions { display: flex; gap: 12px; margin-top: 34px; }
.button { min-width: 168px; min-height: 50px; display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; border: 1px solid transparent; border-radius: 5px; padding: 0 19px; font-size: 12px; font-weight: 800; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--lime); color: var(--night); box-shadow: 0 12px 34px rgba(169,255,79,.14); }
.button.secondary { border-color: rgba(255,255,255,.22); background: rgba(255,255,255,.045); color: #fff; }
.button.secondary.dark { border-color: rgba(6,19,14,.25); background: transparent; color: var(--night); }
.live-signal { display: flex; align-items: center; gap: 9px; margin-top: 24px; color: rgba(255,255,255,.42); font-size: 9px; }
.live-signal i { width: 7px; height: 7px; border-radius: 50%; background: var(--emerald); box-shadow: 0 0 12px var(--emerald); }
.live-signal.is-warning i { background: #ffbe3d; box-shadow: 0 0 12px #ffbe3d; }

.analysis-console { align-self: center; border: 1px solid rgba(169,255,79,.22); border-radius: 14px; padding: 18px; background: linear-gradient(145deg, rgba(14,49,34,.78), rgba(4,18,12,.9)); box-shadow: 0 34px 90px rgba(0,0,0,.3); backdrop-filter: blur(12px); }
.console-topline { display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,.09); padding: 2px 3px 15px; color: rgba(255,255,255,.4); font: 8px Consolas, monospace; letter-spacing: .13em; }
.console-topline b { display: flex; align-items: center; gap: 7px; color: var(--lime); font-weight: 500; }
.console-topline b i { width: 5px; height: 5px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 8px var(--lime); }
.console-orbit { position: relative; width: min(350px, 76vw); aspect-ratio: 1; margin: 18px auto 8px; }
.orbit { position: absolute; border: 1px solid rgba(169,255,79,.18); border-radius: 50%; }
.orbit-a { inset: 7%; }
.orbit-b { inset: 20%; border-style: dashed; }
.orbit-core { position: absolute; inset: 31%; display: grid; place-items: center; align-content: center; border: 1px solid rgba(169,255,79,.52); border-radius: 50%; background: rgba(3,18,12,.72); box-shadow: 0 0 0 14px rgba(169,255,79,.025), inset 0 0 35px rgba(169,255,79,.06); }
.orbit-core small { color: rgba(255,255,255,.5); font: 7px Consolas, monospace; letter-spacing: .22em; }
.orbit-core strong { color: var(--lime); font: 62px/1 Georgia, serif; }
.orbit-core span { color: rgba(255,255,255,.36); font-size: 7px; }
.orbit-node { position: absolute; min-width: 54px; border: 1px solid rgba(255,255,255,.13); border-radius: 15px; padding: 6px 9px; color: rgba(255,255,255,.48); font: 6px Consolas, monospace; text-align: center; }
.node-data { top: 15%; left: 0; }
.node-model { top: 7%; right: 2%; color: var(--lime); }
.node-review { right: 0; bottom: 15%; }
.console-orbit::after { position: absolute; right: 50%; bottom: 0; width: 5px; height: 5px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 12px var(--lime); content: ""; }
.console-modules { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid rgba(255,255,255,.09); border-left: 1px solid rgba(255,255,255,.09); }
.console-modules > div { display: grid; gap: 5px; border-right: 1px solid rgba(255,255,255,.09); border-bottom: 1px solid rgba(255,255,255,.09); padding: 13px; }
.console-modules span { color: rgba(255,255,255,.32); font: 6px Consolas, monospace; letter-spacing: .12em; }
.console-modules b { color: #fff; font-size: 10px; font-weight: 600; }

.hero-metrics { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); overflow: hidden; border: 1px solid rgba(255,255,255,.11); border-radius: 10px; background: rgba(255,255,255,.04); backdrop-filter: blur(10px); }
.hero-metrics > div { min-height: 108px; display: grid; align-content: center; gap: 5px; border-right: 1px solid rgba(255,255,255,.1); padding: 18px 28px; }
.hero-metrics > div:last-child { border-right: 0; }
.hero-metrics strong { color: var(--lime); font: 400 clamp(27px, 3vw, 38px)/1 Georgia, serif; }
.hero-metrics span { font-size: 10px; font-weight: 700; }
.hero-metrics small { color: rgba(255,255,255,.3); font: 6px Consolas, monospace; letter-spacing: .11em; }

.section-heading { max-width: 760px; }
.section-heading.centered { margin-right: auto; margin-left: auto; text-align: center; }
.section-index { color: var(--green); font: 8px Consolas, monospace; letter-spacing: .22em; }
.section-index.light { color: var(--lime); }
.section-heading h2 { margin: 19px 0 0; font-size: clamp(38px, 4.2vw, 58px); line-height: 1.15; letter-spacing: -.045em; }
.section-heading p { margin: 20px 0 0; color: var(--muted); font-size: 13px; line-height: 2; }

.capabilities-section { padding: 112px 0 128px; background: var(--paper); }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 62px; }
.capability-grid article { min-height: 330px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 10px; padding: 26px; background: #fff; box-shadow: 0 10px 30px rgba(6,19,14,.035); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.capability-grid article:hover { transform: translateY(-5px); border-color: rgba(15,101,72,.35); box-shadow: var(--shadow); }
.module-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 10px; background: #e9f8ef; color: var(--green); font: 700 12px Consolas, monospace; }
.capability-grid article > span { margin-top: 33px; color: var(--emerald); font: 7px Consolas, monospace; letter-spacing: .15em; }
.capability-grid h3 { margin: 12px 0 0; font-size: 21px; }
.capability-grid p { margin: 16px 0 0; color: var(--muted); font-size: 11px; line-height: 1.9; }
.capability-grid article > small { margin-top: auto; padding-top: 26px; color: #9aa69f; font-size: 8px; }

.product-section { padding: 112px 0; background: var(--night); color: #fff; }
.product-shell { display: grid; grid-template-columns: minmax(280px, .68fr) minmax(0, 1.32fr); gap: 90px; align-items: start; }
.product-section .section-heading { position: sticky; top: 125px; }
.product-section .section-heading p { color: rgba(255,255,255,.48); }
.product-list { border-top: 1px solid rgba(255,255,255,.13); }
.product-list a { display: grid; grid-template-columns: 52px 1fr 28px; gap: 20px; align-items: center; border-bottom: 1px solid rgba(255,255,255,.13); padding: 29px 10px; transition: background .18s ease, padding .18s ease; }
.product-list a:hover { padding-right: 18px; padding-left: 18px; background: rgba(169,255,79,.04); }
.product-list > a > span { color: var(--lime); font: 700 12px Consolas, monospace; }
.product-list small { color: rgba(255,255,255,.27); font: 6px Consolas, monospace; letter-spacing: .13em; }
.product-list h3 { margin: 7px 0 0; font-size: 22px; }
.product-list p { margin: 8px 0 0; color: rgba(255,255,255,.43); font-size: 10px; }
.product-list b { color: var(--lime); font-weight: 400; }

.evidence-section { padding: 118px 0 130px; background: #edf2ef; }
.evidence-dashboard { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(330px, .55fr); gap: 18px; margin-top: 62px; }
.quant-panel, .research-panel, .worldcup-panel { border: 1px solid var(--line); border-radius: 11px; background: #fff; box-shadow: 0 16px 55px rgba(6,19,14,.045); }
.quant-panel { padding: 38px; }
.quant-panel > header { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 34px; align-items: center; }
.panel-label { color: var(--green); font: 7px Consolas, monospace; letter-spacing: .16em; }
.quant-panel h3, .research-panel h3, .worldcup-panel h3 { margin: 12px 0 0; font-size: 25px; }
.quant-panel header p, .research-panel > p, .worldcup-panel p { margin: 12px 0 0; color: var(--muted); font-size: 10px; line-height: 1.85; }
.roi-number { min-width: 210px; display: grid; gap: 5px; border-left: 1px solid var(--line); padding-left: 30px; }
.roi-number small { color: var(--muted); font-size: 8px; }
.roi-number strong { color: var(--green); font: 400 44px/1 Georgia, serif; }
.roi-number span { font-size: 8px; font-weight: 700; }
.quant-kpis { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 30px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.quant-kpis div { display: grid; gap: 8px; border-right: 1px solid var(--line); padding: 19px; }
.quant-kpis div:first-child { padding-left: 0; }
.quant-kpis div:last-child { border-right: 0; }
.quant-kpis span { color: var(--muted); font-size: 8px; }
.quant-kpis strong { color: var(--green); font: 400 27px/1 Georgia, serif; }

.equity-figure { margin: 28px 0 0; border-radius: 8px; padding: 22px; background: var(--night); color: #fff; }
.equity-chart-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; padding: 0 4px 14px; }
.equity-chart-head > div { display: grid; gap: 5px; }
.equity-chart-head > div span { color: var(--lime); font: 6px Consolas, monospace; letter-spacing: .16em; }
.equity-chart-head b { font-size: 17px; }
.equity-chart-head p { display: flex; align-items: center; gap: 6px; margin: 0; color: rgba(255,255,255,.38); font-size: 6px; }
.equity-chart-head p i { width: 16px; height: 2px; background: var(--lime); box-shadow: 0 0 7px rgba(169,255,79,.55); }
.equity-chart-head p em { width: 16px; margin-left: 6px; border-top: 1px dashed rgba(255,255,255,.4); }
.equity-chart-wrap { min-height: 250px; overflow: hidden; }
.equity-chart { width: 100%; height: auto; min-height: 240px; display: block; overflow: visible; }
.equity-chart .chart-grid { stroke: rgba(255,255,255,.08); stroke-width: 1; }
.equity-chart .chart-baseline { stroke: rgba(255,255,255,.34); stroke-width: 1; stroke-dasharray: 6 7; }
.equity-chart .chart-axis-label { fill: rgba(255,255,255,.35); font: 10px Consolas, monospace; }
.equity-chart .chart-date-label { fill: rgba(255,255,255,.3); font: 9px Consolas, monospace; }
.equity-chart .chart-area { fill: url(#equityAreaGradient); }
.equity-chart .chart-line { fill: none; stroke: var(--lime); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 0 6px rgba(169,255,79,.36)); }
.equity-chart .chart-point { fill: var(--night); stroke: var(--lime); stroke-width: 3; }
.equity-chart .chart-point-final { fill: var(--lime); stroke: var(--night); stroke-width: 3; }
.equity-chart .chart-marker-line { stroke: rgba(169,255,79,.24); stroke-width: 1; stroke-dasharray: 3 5; }
.equity-chart .chart-marker-label { fill: var(--lime-soft); font: 700 10px "Microsoft YaHei", sans-serif; }
.equity-chart .chart-marker-value { fill: #fff; font: 16px Georgia, serif; }
.equity-milestones { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); }
.equity-milestones div { display: grid; gap: 5px; border-right: 1px solid rgba(255,255,255,.1); padding: 12px; }
.equity-milestones div:last-child { border-right: 0; }
.equity-milestones span { color: rgba(255,255,255,.35); font-size: 6px; }
.equity-milestones strong { color: var(--lime); font: 400 17px Georgia, serif; }
.equity-figure figcaption { padding: 13px 3px 0; color: rgba(255,255,255,.27); font-size: 6px; line-height: 1.7; }

.evidence-side { display: grid; gap: 18px; }
.research-panel { display: flex; flex-direction: column; padding: 30px; background: linear-gradient(145deg, #07150f, #103323); color: #fff; }
.research-panel .panel-label { color: var(--lime); }
.research-panel > p { color: rgba(255,255,255,.5); }
.research-main { display: grid; gap: 5px; margin-top: 27px; border-top: 1px solid rgba(255,255,255,.12); border-bottom: 1px solid rgba(255,255,255,.12); padding: 23px 0; }
.research-main strong { color: var(--lime); font: 400 48px/1 Georgia, serif; }
.research-main span { color: rgba(255,255,255,.45); font-size: 8px; }
.research-grid { display: grid; grid-template-columns: repeat(2, 1fr); }
.research-grid > div { display: grid; gap: 5px; padding: 20px 0; }
.research-grid > div + div { border-left: 1px solid rgba(255,255,255,.12); padding-left: 20px; }
.research-grid strong { font: 400 24px Georgia, serif; }
.research-grid span { color: rgba(255,255,255,.4); font-size: 7px; }
.research-panel > small { margin-top: auto; color: rgba(255,255,255,.28); font-size: 7px; line-height: 1.65; }
.worldcup-panel { overflow: hidden; }
.worldcup-panel > img { width: 100%; aspect-ratio: 16 / 9; border-bottom: 1px solid var(--line); object-fit: cover; }
.worldcup-panel > div { padding: 27px 30px 29px; }
.worldcup-kpis { display: grid; grid-template-columns: repeat(2, 1fr); margin-top: 22px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.worldcup-kpis strong { display: grid; gap: 4px; padding: 15px 0; color: var(--green); font: 400 25px Georgia, serif; }
.worldcup-kpis strong + strong { border-left: 1px solid var(--line); padding-left: 18px; }
.worldcup-kpis small { color: var(--muted); font: 7px "Microsoft YaHei", sans-serif; }
.worldcup-panel a { display: flex; justify-content: space-between; margin-top: 21px; font-size: 9px; font-weight: 800; }

.method-section { padding: 112px 0; background: #0b241a; color: #fff; }
.method-section .section-heading p { color: rgba(255,255,255,.46); }
.method-steps { display: grid; grid-template-columns: repeat(4, 1fr); margin: 58px 0 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.13); border-left: 1px solid rgba(255,255,255,.13); }
.method-steps li { min-height: 245px; display: grid; grid-template-columns: 38px 1fr; gap: 14px; border-right: 1px solid rgba(255,255,255,.13); border-bottom: 1px solid rgba(255,255,255,.13); padding: 25px; }
.method-steps li > span { color: var(--lime); font: 700 11px Consolas, monospace; }
.method-steps small { color: rgba(255,255,255,.26); font: 6px Consolas, monospace; letter-spacing: .13em; }
.method-steps h3 { margin: 14px 0 0; font-size: 19px; }
.method-steps p { margin: 13px 0 0; color: rgba(255,255,255,.45); font-size: 9px; line-height: 1.8; }

.membership-section { padding: 78px 0; background: var(--lime); color: var(--night); }
.membership-shell { display: flex; align-items: center; justify-content: space-between; gap: 50px; }
.membership-shell > div:first-child > span { font: 7px Consolas, monospace; letter-spacing: .15em; }
.membership-shell h2 { margin: 13px 0 0; font-size: clamp(36px, 4vw, 56px); letter-spacing: -.045em; }
.membership-shell p { margin: 14px 0 0; font-size: 11px; }
.membership-actions { display: flex; gap: 10px; }
.membership-actions .primary { background: var(--night); color: #fff; box-shadow: none; }

.site-footer { padding: 60px 0 24px; background: #030b07; color: #fff; }
.footer-top { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .brand-seal { border-color: rgba(169,255,79,.55); color: var(--lime); }
.footer-brand div { display: grid; gap: 4px; }
.footer-brand strong { font-family: SimSun, STSong, serif; font-size: 15px; letter-spacing: .11em; }
.footer-brand small { color: rgba(255,255,255,.28); font: 6px Consolas, monospace; letter-spacing: .15em; }
.footer-top nav { display: flex; gap: 26px; color: rgba(255,255,255,.55); font-size: 9px; }
.footer-compliance { margin-top: 34px; border-top: 1px solid rgba(255,255,255,.11); border-bottom: 1px solid rgba(255,255,255,.11); padding: 22px 0; }
.footer-compliance p { margin: 0; color: rgba(255,255,255,.34); font-size: 8px; line-height: 1.7; }
.footer-compliance p + p { margin-top: 5px; font: 6px Consolas, monospace; letter-spacing: .08em; }
.footer-bottom { display: flex; justify-content: space-between; gap: 25px; padding-top: 21px; color: rgba(255,255,255,.24); font: 6px Consolas, monospace; letter-spacing: .1em; }

a:focus-visible, button:focus-visible { outline: 2px solid var(--emerald); outline-offset: 4px; }

@media (max-width: 1140px) {
  :root { --shell: min(100% - 40px, 1040px); }
  .desktop-nav { gap: 17px; }
  .brand { min-width: 250px; }
  .brand-name strong { font-size: 14px; }
  .hero-shell { grid-template-columns: minmax(0, 1fr) 380px; gap: 44px; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .evidence-dashboard { grid-template-columns: 1fr; }
  .evidence-side { grid-template-columns: repeat(2, 1fr); }
  .research-panel > small { margin-top: 24px; }
}

@media (max-width: 880px) {
  .desktop-nav, .login-link { display: none; }
  .menu-button { width: 40px; height: 40px; display: grid; align-content: center; gap: 7px; border: 1px solid #d7dfdb; border-radius: 50%; padding: 0 10px; background: #fff; }
  .menu-button span { height: 1px; background: var(--night); transition: transform .2s ease; }
  .site-header.menu-open .menu-button span:first-child { transform: translateY(4px) rotate(45deg); }
  .site-header.menu-open .menu-button span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .mobile-menu { position: fixed; z-index: 98; top: 78px; right: 0; bottom: 0; left: 0; display: grid; align-content: start; overflow-y: auto; padding: 28px max(24px, calc((100% - var(--shell)) / 2)); background: rgba(249,251,250,.99); color: var(--ink); opacity: 0; pointer-events: none; transform: translateY(-12px); transition: opacity .2s ease, transform .2s ease; }
  .site-header.menu-open .mobile-menu { opacity: 1; pointer-events: auto; transform: none; }
  .mobile-menu > a { display: flex; align-items: baseline; justify-content: space-between; border-bottom: 1px solid var(--line); padding: 22px 0; font-size: 24px; font-weight: 800; }
  .mobile-menu small { color: var(--muted); font: 7px Consolas, monospace; letter-spacing: .14em; }
  .mobile-menu > div { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 25px; }
  .mobile-menu > div a { padding: 15px; background: var(--night); color: #fff; text-align: center; font-size: 11px; }
  .hero-shell { grid-template-columns: 1fr; grid-template-rows: auto auto auto; padding-top: 80px; }
  .hero-copy { max-width: 760px; }
  .analysis-console { width: min(540px, 100%); justify-self: center; }
  .hero-metrics { grid-template-columns: repeat(2, 1fr); }
  .hero-metrics > div:nth-child(2) { border-right: 0; }
  .hero-metrics > div:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.1); }
  .product-shell { grid-template-columns: 1fr; gap: 50px; }
  .product-section .section-heading { position: static; }
  .method-steps { grid-template-columns: repeat(2, 1fr); }
  .membership-shell { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 620px) {
  :root { --shell: calc(100% - 28px); }
  html { scroll-padding-top: 70px; }
  .header-shell { min-height: 70px; gap: 10px; }
  .brand { min-width: 0; gap: 8px; }
  .brand-seal { width: 34px; height: 34px; font-size: 19px; }
  .brand-name strong { max-width: 160px; overflow: hidden; font-size: 11px; letter-spacing: .05em; text-overflow: ellipsis; white-space: nowrap; }
  .brand-name small { font-size: 4px; letter-spacing: .08em; }
  .header-actions { gap: 8px; }
  .header-cta { height: 36px; gap: 8px; padding: 0 11px; font-size: 9px; }
  .language-switch { height: 28px; }
  .language-switch button { min-width: 23px; padding: 0 4px; font-size: 8px; }
  .menu-button { width: 36px; height: 36px; }
  .mobile-menu { top: 70px; }

  .hero { min-height: 0; padding-top: 70px; }
  .hero-backdrop { background: linear-gradient(180deg, rgba(4,17,12,.96) 0%, rgba(4,17,12,.86) 60%, rgba(4,17,12,.96) 100%), url("/static/brand_portal/assets/hero-stadium.png") 62% center / cover no-repeat; }
  .hero-grid { background-size: 42px 42px; }
  .hero-shell { gap: 36px; padding-top: 58px; padding-bottom: 22px; }
  .institution-line { font-size: 9px; }
  .system-tag { margin-top: 23px; font-size: 6px; }
  .hero h1 { gap: 10px; margin-top: 14px; font-size: clamp(44px, 14vw, 58px); }
  .hero h1 small { font-size: 13px; letter-spacing: .07em; }
  .hero-lead { margin-top: 21px; font-size: 11px; line-height: 1.9; }
  .hero-actions { display: grid; grid-template-columns: repeat(2, 1fr); margin-top: 27px; }
  .button { min-width: 0; min-height: 47px; padding: 0 13px; font-size: 9px; }
  .live-signal { margin-top: 18px; font-size: 7px; }
  .analysis-console { padding: 14px; }
  .console-orbit { width: min(300px, 80vw); }
  .orbit-core strong { font-size: 48px; }
  .console-modules > div { padding: 11px; }
  .console-modules b { font-size: 8px; }
  .hero-metrics { border-radius: 6px; }
  .hero-metrics > div { min-height: 92px; padding: 15px; }
  .hero-metrics strong { font-size: 25px; }
  .hero-metrics span { font-size: 8px; }
  .hero-metrics small { font-size: 5px; }

  .section-heading h2 { margin-top: 14px; font-size: 34px; }
  .section-heading p { margin-top: 14px; font-size: 10px; line-height: 1.85; }
  .section-index { font-size: 6px; }
  .capabilities-section, .product-section, .evidence-section, .method-section { padding: 78px 0; }
  .capability-grid { grid-template-columns: 1fr; gap: 10px; margin-top: 38px; }
  .capability-grid article { min-height: 250px; padding: 23px; }
  .capability-grid article > span { margin-top: 25px; }
  .capability-grid h3 { font-size: 19px; }
  .product-list a { grid-template-columns: 40px 1fr 20px; gap: 12px; padding: 23px 5px; }
  .product-list h3 { font-size: 19px; }
  .product-list p { font-size: 8px; line-height: 1.6; }

  .evidence-dashboard { margin-top: 40px; }
  .quant-panel { padding: 22px 16px; }
  .quant-panel > header { grid-template-columns: 1fr; gap: 20px; }
  .quant-panel h3 { font-size: 23px; }
  .roi-number { border-top: 1px solid var(--line); border-left: 0; padding-top: 18px; padding-left: 0; }
  .roi-number strong { font-size: 42px; }
  .quant-kpis { grid-template-columns: 1fr; }
  .quant-kpis div { border-right: 0; border-bottom: 1px solid var(--line); padding: 15px 0; }
  .quant-kpis div:last-child { border-bottom: 0; }
  .equity-figure { padding: 18px 10px 14px; }
  .equity-chart-head { align-items: start; flex-direction: column; gap: 9px; }
  .equity-chart-wrap { min-height: 0; overflow: hidden; }
  .equity-chart { width: 100%; min-height: 0; }
  .equity-milestones { grid-template-columns: repeat(2, 1fr); }
  .equity-milestones div:nth-child(2) { border-right: 0; }
  .equity-milestones div:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.1); }
  .evidence-side { grid-template-columns: 1fr; }
  .research-panel, .worldcup-panel > div { padding: 24px; }
  .research-main strong { font-size: 43px; }
  .method-steps { grid-template-columns: 1fr; }
  .method-steps li { min-height: 180px; }

  .membership-section { padding: 60px 0; }
  .membership-shell h2 { font-size: 38px; }
  .membership-actions { width: 100%; display: grid; grid-template-columns: repeat(2, 1fr); }
  .footer-top { align-items: flex-start; flex-direction: column; }
  .footer-top nav { display: grid; grid-template-columns: repeat(2, 1fr); width: 100%; gap: 14px; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}