.case-page { --case-green: #173f29; --case-pale: #d9f1df; background: var(--paper); }
.case-header { color: var(--paper); border-color: rgba(241,239,232,.18); background: rgba(16,38,26,.86); }
.case-header .header-cta::before { background: var(--lime); }

.case-hero { position: relative; min-height: 100svh; padding: 126px var(--pad) 34px; color: var(--paper); background: #10261a; overflow: hidden; }
.case-hero-top { position: relative; z-index: 2; display: flex; justify-content: space-between; }
.case-kicker, .case-year { margin: 0; color: #91a899; font-size: 10px; font-weight: 800; line-height: 1.6; letter-spacing: .14em; text-transform: uppercase; }
.case-year { text-align: right; }
.case-hero h1 { position: relative; z-index: 2; margin: clamp(70px, 10vh, 116px) 0 0; font-family: "Syne", sans-serif; font-size: clamp(76px, 15vw, 238px); line-height: .72; letter-spacing: -.095em; }
.case-hero h1 span { color: transparent; -webkit-text-stroke: 1.5px var(--lime); }
.case-hero-bottom { position: absolute; z-index: 2; right: var(--pad); bottom: 36px; display: grid; gap: 30px; width: min(25vw, 400px); }
.case-hero-bottom p { margin: 0; color: #afbeb4; font-size: 14px; line-height: 1.8; }

.case-facts { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--ink); background: var(--lime); }
.case-facts > div { min-height: 112px; display: flex; flex-direction: column; justify-content: space-between; padding: 22px var(--pad); border-right: 1px solid var(--ink); }
.case-facts > div:last-child { border: 0; }
.case-facts span { font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.case-facts strong { font-size: 11px; letter-spacing: .08em; }
.case-facts strong i { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: var(--blue); }

.case-overview { display: grid; grid-template-columns: 28% 1fr; padding: 120px var(--pad) 140px; }
.case-section-index { display: flex; gap: 24px; align-items: start; color: var(--muted); font-size: 10px; font-weight: 800; letter-spacing: .13em; }
.case-section-index span { display: grid; place-items: center; width: 36px; height: 36px; color: var(--ink); border: 1px solid var(--ink); border-radius: 50%; }
.case-section-index p { margin: 12px 0 0; }
.case-overview h2, .case-features h2, .case-system h2, .case-next h2 { margin: 0; font-family: "Syne", sans-serif; font-size: clamp(54px, 8.6vw, 136px); line-height: .88; letter-spacing: -.075em; }
.case-copy-columns { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 6vw, 90px); margin-top: 55px; }
.case-copy-columns p { margin: 0; max-width: 38ch; color: var(--muted); font-size: 14px; line-height: 1.9; }

.case-showcase { display: grid; grid-template-columns: 1.65fr .75fr; gap: clamp(32px, 6vw, 100px); align-items: center; padding: clamp(55px, 8vw, 120px) var(--pad); color: var(--paper); background: var(--case-green); }
.case-screen { position: relative; margin: 0; padding: clamp(16px, 2.2vw, 32px); border: 1px solid rgba(241,239,232,.32); background: #0c1710; transform: rotate(-1.5deg); }
.case-screen img { display: block; width: 100%; height: auto; filter: saturate(.88) contrast(1.02); }
.screen-label { display: flex; justify-content: space-between; padding-top: 15px; color: #8da294; font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.case-showcase-note .case-tag { color: var(--lime); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.case-showcase-note h3 { margin: 28px 0 20px; font-size: clamp(34px, 4vw, 62px); line-height: 1.05; letter-spacing: -.04em; }
.case-showcase-note p { margin: 0 0 38px; color: #a6b4aa; font-size: 13px; line-height: 1.85; }
.case-button { display: flex; justify-content: space-between; align-items: center; padding: 18px 20px; color: var(--ink); background: var(--lime); font-size: 11px; font-weight: 800; }
.case-button span { font-size: 19px; }

.case-features { padding: 120px var(--pad) 140px; }
.feature-title { display: grid; grid-template-columns: 1fr minmax(220px, 31%); gap: 50px; align-items: end; margin: 45px 0 70px 28%; }
.feature-title p { margin: 0 0 8px; color: var(--muted); font-size: 13px; line-height: 1.8; }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); border: 1px solid var(--ink); }
.feature-card { position: relative; display: flex; flex-direction: column; min-height: 440px; padding: 30px; border: 1px solid var(--ink); }
.feature-card > span { font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.feature-card > i { position: absolute; top: 24px; right: 28px; font: normal 800 clamp(50px, 7vw, 105px)/1 "Syne", sans-serif; }
.feature-card h3 { margin: auto 0 26px; font-family: "Syne", sans-serif; font-size: clamp(33px, 4vw, 60px); line-height: .95; letter-spacing: -.055em; }
.feature-card p { margin: 0; max-width: 41ch; font-size: 12px; line-height: 1.75; opacity: .72; }
.feature-card--dark { color: var(--paper); background: var(--ink); }
.feature-card--blue { color: var(--paper); background: var(--blue); }
.feature-card--paper { background: var(--paper); }
.feature-card--lime { background: var(--lime); }

.case-principles { display: grid; grid-template-columns: 28% 1fr; padding: 110px var(--pad); border-block: 1px solid var(--ink); }
.principle-list article { display: grid; grid-template-columns: 55px minmax(160px, .65fr) 1fr; gap: 25px; padding: 31px 0; border-top: 1px solid var(--line); }
.principle-list article:last-child { border-bottom: 1px solid var(--line); }
.principle-list span { color: var(--case-green); font-size: 10px; font-weight: 800; }
.principle-list h3 { margin: 0; font-size: clamp(20px, 2vw, 30px); }
.principle-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

.case-system { padding: 120px var(--pad) 0; color: var(--paper); background: #10261a; overflow: hidden; }
.system-copy { display: grid; grid-template-columns: 28% 1fr; }
.system-copy > * { min-width: 0; }
.system-copy .eyebrow { color: #7f9587; }
.system-copy h2 { grid-column: 2; }
.system-copy > p:last-child { grid-column: 2; max-width: 52ch; margin: 38px 0 70px; color: #a7b5ac; font-size: 14px; line-height: 1.85; }
.system-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 26px; align-items: center; padding: clamp(30px, 5vw, 70px); border: 1px solid rgba(241,239,232,.25); }
.system-flow > div { min-height: 190px; display: flex; flex-direction: column; justify-content: space-between; padding: 22px; color: var(--ink); background: var(--case-pale); }
.system-flow > div:nth-of-type(2) { background: var(--lime); }
.system-flow > div:nth-of-type(3) { color: var(--paper); background: var(--blue); }
.system-flow span { font-size: 10px; font-weight: 800; }
.system-flow strong { font: 800 clamp(20px, 2vw, 32px)/1 "Syne", sans-serif; }
.system-flow p { margin: 0; font-size: 10px; }
.system-flow > i { color: var(--lime); font: normal 26px/1 sans-serif; }
.tech-line { display: flex; justify-content: space-between; gap: 35px; overflow: hidden; margin-top: 90px; padding: 24px 0; border-top: 1px solid rgba(241,239,232,.22); color: #879b8e; font-size: 10px; font-weight: 800; letter-spacing: .12em; }

.architecture-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); margin: 44px 0 0; border-top: 1px solid rgba(241,239,232,.24); border-left: 1px solid rgba(241,239,232,.24); }
.architecture-grid > div { min-width: 0; min-height: 132px; padding: 20px; border-right: 1px solid rgba(241,239,232,.24); border-bottom: 1px solid rgba(241,239,232,.24); }
.architecture-grid dt { color: #879b8e; font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.architecture-grid dd { margin: 34px 0 0; color: var(--paper); font-size: 11px; font-weight: 700; line-height: 1.55; }

.case-subtitle { margin: 0 0 48px; font-family: "Syne", sans-serif; font-size: clamp(48px, 7vw, 112px); line-height: .88; letter-spacing: -.075em; }
.case-challenges .principle-list article:first-of-type { border-top-color: var(--ink); }
.case-lessons { display: grid; grid-template-columns: 28% 1fr; gap: var(--pad); padding: 110px var(--pad); background: var(--paper); }
.lesson-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.lesson-grid > div { min-width: 0; min-height: 210px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.lesson-grid dt { color: var(--blue); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.lesson-grid dd { display: grid; gap: 16px; margin: 48px 0 0; }
.lesson-grid strong { font-family: "Syne", sans-serif; font-size: clamp(20px, 2.2vw, 30px); letter-spacing: -.035em; }
.lesson-grid span { max-width: 52ch; color: var(--muted); font-size: 12px; line-height: 1.8; }

.case-chapter-marker { display: flex; justify-content: space-between; gap: 20px; padding: 17px var(--pad); color: var(--paper); background: #9b4933; font-size: 10px; font-weight: 800; letter-spacing: .16em; }

.case-technical { padding: clamp(90px, 10vw, 150px) var(--pad); color: var(--paper); background-color: #0e1114; background-image: linear-gradient(120deg, rgba(49,91,104,.18), transparent 48%); }
.case-technical-head { display: grid; grid-template-columns: 28% 1fr; gap: var(--pad); }
.case-technical-track { display: inline-flex; margin-bottom: 30px; padding: 7px 9px; color: #0e1114; background: #d6b28b; font-size: 10px; font-weight: 800; letter-spacing: .16em; }
.case-technical h2 { margin: 0; font-family: "Syne", sans-serif; font-size: clamp(52px, 8vw, 128px); line-height: .86; letter-spacing: -.075em; }
.case-technical-head > div > p { max-width: 56ch; margin: 34px 0 0; color: #aaa29b; font-size: 14px; line-height: 1.85; }
.technical-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 76px 0 0; border-top: 1px solid rgba(238,233,220,.24); border-left: 1px solid rgba(238,233,220,.24); }
.technical-grid > div { min-width: 0; min-height: 178px; padding: 24px; border-right: 1px solid rgba(238,233,220,.24); border-bottom: 1px solid rgba(238,233,220,.24); }
.technical-grid > div:last-child { grid-column: 1 / -1; }
.technical-grid dt { color: #c89979; font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.technical-grid dd { display: grid; gap: 15px; margin: 48px 0 0; }
.technical-grid strong { font-family: "Syne", sans-serif; font-size: clamp(21px, 2.4vw, 34px); letter-spacing: -.035em; }
.technical-grid dd span { max-width: 50ch; color: #aaa29b; font-size: 12px; line-height: 1.7; }

.case-explore { display: grid; grid-template-columns: 28% 1fr; gap: var(--pad); padding: clamp(76px, 8vw, 112px) var(--pad); color: var(--paper); background: #0d1514; }
.case-explore h2 { margin: 26px 0 0; font-family: "Syne", sans-serif; font-size: clamp(34px, 4.6vw, 70px); line-height: .9; letter-spacing: -.06em; }
.case-explore-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid rgba(241,239,232,.25); border-left: 1px solid rgba(241,239,232,.25); }
.case-explore-links a { position: relative; display: grid; grid-template-columns: 1fr auto; gap: 10px 18px; align-content: center; min-height: 110px; padding: 20px; border-right: 1px solid rgba(241,239,232,.25); border-bottom: 1px solid rgba(241,239,232,.25); transition: color .3s ease, background-color .3s ease; }
.case-explore-links span { grid-column: 1 / -1; color: #8b918d; font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.case-explore-links strong { font-family: "Syne", sans-serif; font-size: clamp(18px, 2vw, 28px); letter-spacing: -.035em; }
.case-explore-links i { align-self: center; font-size: 18px; font-style: normal; transition: transform .3s ease; }
.case-explore-links a:is(:hover, :focus-visible) { color: var(--ink); background: #d4d2b5; }
.case-explore-links a:is(:hover, :focus-visible) span { color: #5c625e; }
.case-explore-links a:is(:hover, :focus-visible) i { transform: translateX(4px); }
.case-explore--haguruma .eyebrow { color: #b77c5e; }

.case-next { min-height: 86svh; display: flex; flex-direction: column; padding: 90px var(--pad) 28px; color: var(--paper); background: var(--ink); }
.case-next .eyebrow { color: #85847d; }
.case-next h2 { margin: auto 0; font-size: clamp(75px, 13vw, 205px); }
.case-next h2 span { color: var(--lime); }
.case-next-actions { display: flex; justify-content: flex-end; gap: 40px; margin: 50px 0; }
.case-next-actions a { padding: 14px 0; border-bottom: 1px solid currentColor; font-size: 10px; font-weight: 800; letter-spacing: .13em; }
.case-footer { padding: 28px var(--pad); background: var(--ink); }

.case-page--portal { --case-green: #20254a; --case-pale: #e8e9ff; }
.case-page--portal .case-header { background: rgba(21,24,49,.87); }
.case-page--portal .case-hero, .case-page--portal .case-system { background: #151831; }
.case-page--portal .case-hero h1 span { -webkit-text-stroke-color: #aeb8ff; }
.case-page--portal .case-facts { background: #bfc7ff; }
.case-page--portal .case-showcase { background: #222a58; }
.case-page--portal .case-button { background: #bfc7ff; }
.case-page--portal .principle-list span { color: var(--blue); }
.case-page--portal .case-features .feature-grid { margin-top: 42px; }
.case-page--system { --case-green: #151d2a; --case-pale: #dce8e1; }
.case-page--system .case-header { background: rgba(10,15,23,.88); }
.case-page--system .case-hero, .case-page--system .case-system { background: #0a0f17; }
.case-page--system .case-facts, .case-page--system .case-button { background: var(--lime); }
.case-page--system .case-showcase { background: #111925; }
.case-page--system .principle-list span { color: #3757ff; }
.case-page--haguruma { --case-green: #211510; --case-pale: #e4d2bd; }
.case-page--haguruma .case-header { background: rgba(18,13,11,.82); }
.case-page--haguruma .case-hero h1 { color: #fff4df; font-family: "Zen Old Mincho", "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(84px, 14vw, 214px); font-weight: 900; line-height: .82; letter-spacing: -.075em; white-space: nowrap; -webkit-text-stroke: 1px rgba(18,13,11,.68); paint-order: stroke fill; text-shadow: 4px 4px 0 #a94f37, 11px 13px 0 rgba(18,13,11,.55), 0 16px 36px rgba(0,0,0,.86); }
.case-page--haguruma .case-hero h1 span { -webkit-text-stroke-color: #d59664; }
.case-page--haguruma .case-progress { padding-top: 14px; border-top: 1px solid rgba(241,239,232,.35); color: #f5efe5; font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.case-page--haguruma .case-facts { background: #d6b28b; }
.case-page--haguruma .case-showcase { background: #1a1110; }
.case-page--haguruma .case-system { background: #0e1114; }
.case-page--haguruma .case-button { background: #a94f37; }
.case-page--haguruma .feature-title { display: block; max-width: 46ch; margin: 24px 0 48px 28%; }
.case-page--haguruma .principle-list span { color: #9b4933; }
.case-page--haguruma .system-flow > div:nth-of-type(2) { background: #d6b28b; }
.case-page--haguruma .system-flow > div:nth-of-type(3) { background: #315b68; }
.pulse-visual { position: absolute; top: 22%; right: 7%; display: flex; align-items: end; gap: clamp(5px, .8vw, 12px); width: clamp(250px, 35vw, 560px); height: clamp(210px, 30vw, 470px); padding: 28px; border: 1px solid rgba(201,255,55,.28); transform: rotate(3deg); }
.pulse-visual i { flex: 1; height: var(--h); background: linear-gradient(var(--lime), var(--blue)); animation: pulse-bars 2.4s ease-in-out infinite alternate; animation-delay: var(--d); }
.pulse-visual::before { content: "SYSTEM / LIVE"; position: absolute; top: 12px; left: 15px; color: var(--lime); font: 800 10px/1 "DM Sans", sans-serif; letter-spacing: .14em; }
@keyframes pulse-bars { to { transform: scaleY(.38); opacity: .55; } }
.monitor-mock { min-height: 410px; padding: clamp(20px, 3vw, 42px); color: #dfe8e4; background: #090e16; }
.monitor-mock-head, .monitor-mock-foot { display: flex; justify-content: space-between; color: #738196; font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.monitor-mock-head b { color: var(--lime); }
.monitor-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 30px 0; }
.monitor-metrics div { min-height: 110px; display: flex; flex-direction: column; justify-content: space-between; padding: 15px; border: 1px solid #283343; }
.monitor-metrics span { color: #778499; font-size: 10px; letter-spacing: .1em; }
.monitor-metrics strong { color: var(--lime); font: 800 clamp(23px, 3vw, 44px)/1 "Syne", sans-serif; }
.monitor-chart { display: flex; align-items: end; gap: 5px; height: 150px; padding-top: 24px; border-top: 1px solid #283343; }
.monitor-chart i { flex: 1; height: var(--h); background: linear-gradient(var(--lime), var(--blue)); opacity: .8; }

@media (max-width: 980px) {
  .feature-title { grid-template-columns: 1fr; gap: 28px; margin: 35px 0 50px; }
  .case-page--haguruma .feature-title { margin-left: 0; }
  .system-flow { grid-template-columns: 1fr; }
  .system-flow > i { justify-self: center; transform: rotate(90deg); }
  .architecture-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .architecture-grid > div:last-child { grid-column: 1 / -1; }
  .case-explore { grid-template-columns: 1fr; gap: 44px; }
}

@media (max-width: 760px) {
  .case-header { color: var(--paper); }
  .case-header nav { color: var(--ink); }
  .case-hero { min-height: 820px; padding-top: 102px; }
  .case-hero h1 { margin-top: 100px; font-size: clamp(68px, 21vw, 110px); }
  .pulse-visual { top: 41%; right: -15%; width: 76vw; height: 280px; }
  .case-hero-bottom { right: var(--pad); bottom: 28px; left: var(--pad); width: auto; }
  .case-facts { grid-template-columns: 1fr 1fr; }
  .case-facts > div { min-height: 92px; border-bottom: 1px solid var(--ink); }
  .case-overview, .case-principles { grid-template-columns: 1fr; gap: 42px; padding-block: 80px; }
  .case-overview h2, .case-features h2, .case-system h2 { font-size: clamp(42px, 13vw, 54px); }
  .case-copy-columns { grid-template-columns: 1fr; gap: 24px; margin-top: 40px; }
  .case-showcase { grid-template-columns: 1fr; padding-block: 70px; }
  .case-screen { transform: none; }
  .case-page--haguruma .case-hero h1 { margin-top: 90px; font-size: clamp(54px, 16.5vw, 72px); text-shadow: 3px 3px 0 #a94f37, 7px 8px 0 rgba(18,13,11,.58), 0 12px 28px rgba(0,0,0,.88); }
  .case-page--haguruma .feature-title { margin: 22px 0 42px; }
  .monitor-metrics { grid-template-columns: 1fr; }
  .monitor-metrics div { min-height: 90px; }
  .case-features { padding-block: 80px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 360px; }
  .principle-list article { grid-template-columns: 40px 1fr; }
  .principle-list article p { grid-column: 2; }
  .case-system { padding-top: 80px; }
  .system-copy { grid-template-columns: 1fr; }
  .system-copy h2, .system-copy > p:last-child { grid-column: 1; }
  .system-copy h2 { margin-top: 35px; }
  .system-flow > div { min-height: 150px; }
  .tech-line { flex-wrap: wrap; justify-content: flex-start; gap: 16px 24px; }
  .architecture-grid { grid-template-columns: 1fr; }
  .architecture-grid > div { min-height: 112px; }
  .case-lessons { grid-template-columns: 1fr; gap: 42px; padding-block: 80px; }
  .lesson-grid { grid-template-columns: 1fr; }
  .lesson-grid > div { min-height: 180px; }
  .lesson-grid dd { margin-top: 34px; }
  .case-technical-head { grid-template-columns: 1fr; gap: 38px; }
  .case-technical h2 { font-size: clamp(44px, 13vw, 54px); }
  .technical-grid { grid-template-columns: 1fr; margin-top: 54px; }
  .technical-grid > div:last-child { grid-column: auto; }
  .technical-grid > div { min-height: 152px; }
  .technical-grid dd { margin-top: 34px; }
  .case-explore-links { grid-template-columns: 1fr; }
  .case-explore-links a { min-height: 96px; }
  .case-next { min-height: 720px; }
  .case-next-actions { flex-direction: column; align-items: flex-end; gap: 10px; }
}