:root {
  --paper: #f2efe7;
  --paper-deep: #e7e1d5;
  --ink: #122236;
  --muted: #5d6670;
  --line: #c9c2b5;
  --signal: #e35d36;
  --white: #fffdf8;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Pretendard", "Noto Sans KR", Arial, sans-serif;
  line-height: 1.65;
}
a { color: inherit; }
.skip { position: fixed; left: 1rem; top: -5rem; z-index: 99; background: var(--ink); color: white; padding: .7rem 1rem; }
.skip:focus { top: 1rem; }

.site-header {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0 max(24px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(242,239,231,.96);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: .85rem; text-decoration: none; }
.brand strong { display: block; font-family: Georgia, "Times New Roman", serif; font-size: 1.08rem; letter-spacing: .01em; }
.brand small { display: block; color: var(--muted); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }
.brand-mark { display: grid; grid-template-columns: repeat(3, 6px); gap: 4px; height: 30px; align-items: end; }
.brand-mark i { display: block; width: 6px; background: var(--ink); }
.brand-mark i:nth-child(1) { height: 13px; }
.brand-mark i:nth-child(2) { height: 29px; background: var(--signal); }
.brand-mark i:nth-child(3) { height: 20px; }
nav { display: flex; align-items: center; gap: 1.4rem; }
nav a { text-decoration: none; font-size: .9rem; font-weight: 650; }
nav a.active { color: var(--signal); }
.contact { border: 1px solid var(--ink); padding: .55rem .85rem; }
.menu { display: none; background: none; border: 1px solid var(--ink); padding: .5rem .7rem; }

.page { min-height: 68vh; }
.hero, .page-head, .section, .split, .cards, .legal-grid, .framework-grid { max-width: var(--max); margin: 0 auto; }
.hero { padding: 7.5rem 0 5.5rem; display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(250px, .45fr); gap: clamp(3rem, 4vw, 4.5rem); align-items: end; }
.eyebrow { color: var(--signal); font-size: .76rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
h1, h2, h3 { font-family: Georgia, "Times New Roman", "Noto Serif KR", serif; line-height: 1.15; margin-top: 0; word-break: keep-all; overflow-wrap: break-word; }
h1 { font-size: clamp(3.1rem, 7.4vw, 6.9rem); letter-spacing: -.055em; margin: 1rem 0 1.8rem; max-width: 900px; }
.hero-title { font-size: clamp(3.7rem, 5vw, 5.25rem); line-height: 1.08; max-width: none; word-break: keep-all; }
.hero-title span { display: block; white-space: nowrap; }
h2 { font-size: clamp(2rem, 4vw, 4rem); letter-spacing: -.035em; }
h3 { font-size: 1.45rem; }
.lead { font-size: clamp(1.1rem, 1.7vw, 1.35rem); max-width: 720px; }
.hero-aside { border-left: 1px solid var(--line); padding-left: 2rem; align-self: end; }
.hero-aside dt { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; }
.hero-aside dd { margin: .2rem 0 1.4rem; font-weight: 700; }
.cta-row { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 2.2rem; }
.button { display: inline-block; text-decoration: none; background: var(--ink); color: white; padding: .85rem 1.1rem; border: 1px solid var(--ink); font-weight: 700; }
.button.secondary { color: var(--ink); background: transparent; }

.band { background: var(--ink); color: var(--white); }
.split { padding: 4rem 0; display: grid; grid-template-columns: .7fr 1.3fr; gap: 5rem; }
.split p { margin-top: 0; font-size: 1.08rem; }
.section { padding: 5.5rem 0; }
.rule { border-top: 1px solid var(--line); padding-top: 1.5rem; }
.cards, .framework-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.cards.cards-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card, .framework { background: var(--white); padding: 2rem; }
.card .number { color: var(--signal); font-family: Georgia, serif; font-size: 2rem; }
.process-heading { display: flex; align-items: center; gap: clamp(.75rem, 2vw, 1.5rem); margin: .7rem 0 1rem; font-size: clamp(2.5rem, 5vw, 4.5rem); }
.process-heading span { white-space: nowrap; }
.process-heading i { color: var(--signal); font-family: Arial, sans-serif; font-size: .58em; font-style: normal; font-weight: 400; }
.process-lead { max-width: 760px; margin: 0 0 2.5rem; color: var(--muted); font-size: 1.05rem; }
.process-title { max-width: 860px; margin: .7rem 0 1.2rem; font-size: clamp(2.35rem, 4.6vw, 4.2rem); line-height: 1.08; }
.process-home { padding-top: clamp(4.5rem, 9vw, 8rem); min-height: calc(100vh - 78px); }
.process-home .process-title { max-width: 1280px; font-size: clamp(3rem, 5.15vw, 5.2rem); letter-spacing: -.035em; }
.process-section > .process-lead { max-width: 920px; color: var(--ink); font-size: clamp(1rem, 1.5vw, 1.15rem); line-height: 1.8; }
.process-section.process-home > .process-lead { max-width: 100%; }
.process-ownership { display: grid; grid-template-columns: 1fr auto 1fr; align-items: stretch; gap: .75rem; margin: 0 0 1.5rem; }
.process-ownership span { display: flex; flex-wrap: wrap; align-items: center; gap: .35rem .8rem; padding: 1rem 1.2rem; border: 1px solid var(--line); background: rgba(255,255,255,.46); color: var(--muted); }
.process-ownership span:last-child { border-color: var(--ink); background: var(--ink); color: white; }
.process-ownership strong { color: var(--ink); }
.process-ownership span:last-child strong { color: white; }
.process-ownership i { align-self: center; color: var(--signal); font-family: Arial, sans-serif; font-size: 1.4rem; font-style: normal; }
.process-cards { gap: 1.5rem; border: 0; background: transparent; overflow: visible; }
.process-card { position: relative; display: flex; flex-direction: column; border: 1px solid var(--line); padding-top: 5.25rem; }
.process-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 7px; background: var(--ink); }
.process-card:not(:last-child)::after { content: "→"; position: absolute; right: -.98rem; top: 50%; z-index: 2; width: 1.9rem; height: 1.9rem; display: grid; place-items: center; transform: translateY(-50%); color: white; background: var(--signal); border-radius: 50%; font-family: Arial, sans-serif; font-size: 1rem; }
.process-card .number { position: absolute; top: 2.15rem; right: 1.7rem; color: var(--line); font-size: 3.1rem; line-height: 1; }
.process-card .phase { display: inline-block; margin-bottom: .8rem; color: var(--signal); font-size: .76rem; font-weight: 800; letter-spacing: .14em; }
.process-card h2 { min-height: 2.55em; font-size: clamp(1.55rem, 2.3vw, 2.1rem); }
.process-card > p { min-height: 8.2em; }
.process-card .process-output { min-height: 5.2rem; align-content: flex-start; }
.process-card .process-links { margin-top: auto; }
.process-card-business { border-color: var(--ink); }
.process-card-business::before { background: var(--signal); }
.process-output { display: flex; flex-wrap: wrap; gap: .45rem; margin: 1.25rem 0 0; padding: 0; list-style: none; }
.process-output li { padding: .38rem .62rem; background: var(--paper); border: 1px solid var(--line); color: var(--muted); font-size: .78rem; line-height: 1.35; }
.process-card .text-link { display: inline-block; margin-top: 1.2rem; color: var(--ink); font-weight: 800; text-decoration-color: var(--signal); text-underline-offset: .28em; }
.process-links { display: grid; align-content: start; gap: .15rem; margin-top: 1rem; }
.process-links .text-link { margin-top: .45rem; }
.process-links .text-link.quiet { color: var(--ink); font-weight: 800; }
.page-head { padding: 4.25rem 0 2.75rem; border-bottom: 1px solid var(--line); }
.page-head h1 { max-width: 980px; margin: .7rem 0 1rem; font-size: clamp(2.55rem, 3.65vw, 3.55rem); line-height: 1.11; letter-spacing: -.04em; text-wrap: balance; }
.page-head h1 br { display: inline-block; width: .28em; content: ""; }
.page-head p { max-width: 900px; margin-bottom: 0; font-size: 1.05rem; line-height: 1.75; }
.page-head + .section { padding-top: 3.5rem; }
.work-page .page-head { padding: 3.75rem 0 2.6rem; }
.work-page .page-head h1 { max-width: 980px; margin: .65rem 0 1rem; font-size: clamp(2.6rem, 3.55vw, 3.45rem); line-height: 1.1; }
.work-page .page-head p { max-width: 900px; margin-bottom: 0; font-size: 1.05rem; line-height: 1.75; }
.work-page .page-head + .section { padding-top: 3.2rem; }
.work-page .page-head + .section > h2 { max-width: 780px; margin-bottom: 0; font-size: clamp(2.05rem, 3vw, 2.9rem); line-height: 1.16; }
.work-page .page-head + .section .problem-grid { margin-top: 1.8rem; }
.work-page .page-head + .section .problem-card { min-height: 195px; padding: 1.65rem; }
.latest-articles { padding-top: 3rem; }
.latest-articles > .eyebrow { display: none; }
.latest-articles > h2 { margin: 0 0 2rem; font-size: clamp(1.55rem, 2.4vw, 2.15rem); line-height: 1.3; }
.framework { min-height: 390px; display: flex; flex-direction: column; justify-content: space-between; }
.framework .label { font-size: .74rem; letter-spacing: .12em; color: var(--signal); font-weight: 800; }
.framework ul { padding-left: 1.2rem; }
.chain { margin-top: 1.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .93rem; font-weight: 700; }
.problem-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin-top: 2.5rem; border: 1px solid var(--line); background: var(--line); }
.architectures-page .page-head h1 { max-width: 960px; font-size: clamp(2.55rem, 3.55vw, 3.45rem); }
.architectures-page .page-head + .section { padding-top: 3.2rem; }
.architectures-page .page-head + .section > h2 { margin-bottom: 0; font-size: clamp(2.05rem, 2.8vw, 2.75rem); }
.architectures-page .page-head + .section .problem-grid { margin-top: 1.8rem; }
.architectures-page .page-head + .section .problem-card { min-height: 195px; padding: 1.65rem; }
.architectures-page .section > h2 { font-size: clamp(2rem, 3vw, 3rem); line-height: 1.18; }
.architectures-page .problem-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.problem-card { min-height: 230px; padding: 2rem; background: var(--white); }
.problem-card > span { color: var(--signal); font-family: Georgia, serif; font-size: 1.8rem; }
.problem-card h3 { margin: 1rem 0 .8rem; }
.problem-card p { margin-bottom: 0; color: #374454; }
.method-figure { margin: 2.5rem 0 0; padding: clamp(1rem, 2.5vw, 2rem); border: 1px solid var(--line); background: white; }
.method-figure img { display: block; width: 100%; height: auto; }
.method-figure figcaption { margin-top: 1rem; color: var(--muted); font-size: .82rem; text-align: center; }
.service-domains { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem 3rem; margin-top: 2.5rem; }
.service-domains article { position: relative; padding: 1.5rem 0 1.5rem 4rem; border-top: 1px solid var(--line); }
.service-domains article > span { position: absolute; left: 0; top: 1.25rem; color: var(--signal); font-family: Georgia, serif; font-size: 2rem; }
.service-domains h3 { margin-bottom: .65rem; }
.service-domains p { margin: 0; color: #374454; }
.book-system-map { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin: 2.5rem 0 1.5rem; border: 1px solid var(--line); background: var(--line); }
.book-system-map article { min-height: 300px; padding: 2rem; background: var(--white); }
.book-system-map article > span, .application-path article > span { color: var(--signal); font-size: .72rem; font-weight: 800; letter-spacing: .11em; }
.book-system-map h3 { margin: 1rem 0 .8rem; font-size: 1.45rem; }
.book-system-map strong { display: block; margin-bottom: 1rem; color: var(--ink); }
.book-system-map p { margin: 0; color: #374454; }
.application-path { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin-top: 2.5rem; border: 1px solid var(--line); background: var(--line); }
.application-path article { min-height: 285px; display: flex; flex-direction: column; padding: 1.75rem; background: var(--white); }
.application-path h3 { margin: 1rem 0 .75rem; font-size: 1.35rem; }
.application-path p { margin: 0 0 1.5rem; color: #374454; }
.application-path a { margin-top: auto; font-weight: 750; text-decoration: none; }
.catalog-action.compact { margin-top: 1.5rem; }
.integrated-services .process-lead, .systems-section .process-lead { max-width: 930px; }
.offer-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; margin-top: 2.6rem; }
.offer-card { display: flex; flex-direction: column; min-height: 590px; border: 1px solid var(--line); background: var(--white); }
.offer-card header { min-height: 205px; padding: 2rem; color: var(--white); background: var(--ink); }
.offer-card header > span { color: #ff7653; font-size: .72rem; font-weight: 800; letter-spacing: .13em; }
.offer-card h3 { margin: .85rem 0 .75rem; color: var(--white); font-size: clamp(1.55rem, 2.3vw, 2.15rem); }
.offer-card header p { margin: 0; color: #e7ebef; }
.offer-details { margin: 0; padding: .5rem 2rem 1.3rem; }
.offer-details div { display: grid; grid-template-columns: 92px 1fr; gap: 1rem; padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.offer-details div:last-child { border-bottom: 0; }
.offer-details dt { color: var(--signal); font-size: .78rem; font-weight: 800; }
.offer-details dd { margin: 0; color: #2f3b49; line-height: 1.7; }
.featured-services { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-top: 2.5rem; border: 1px solid var(--line); background: var(--line); }
.featured-services article { min-height: 310px; display: flex; flex-direction: column; padding: 2rem; background: var(--white); }
.featured-services article > span { color: var(--signal); font-size: .7rem; font-weight: 800; letter-spacing: .11em; }
.featured-services h3 { margin: 1rem 0 .8rem; font-size: 1.55rem; }
.featured-services p { margin: 0 0 1.5rem; color: #374454; }
.featured-services a { margin-top: auto; font-weight: 750; text-decoration: none; }
.full-catalog { margin-top: 1.5rem; border: 1px solid var(--ink); background: var(--white); }
.full-catalog > summary { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 1.5rem 2rem; cursor: pointer; list-style: none; color: var(--white); background: var(--ink); }
.full-catalog > summary::-webkit-details-marker { display: none; }
.full-catalog > summary span, .full-catalog > summary small { display: block; }
.full-catalog > summary strong { font-family: Georgia, "Times New Roman", "Noto Serif KR", serif; font-size: 1.5rem; }
.full-catalog > summary small { margin-top: .25rem; color: #bfc8d2; }
.full-catalog > summary b { color: #ff7653; font-family: Arial, sans-serif; font-size: 2rem; transition: transform .2s ease; }
.full-catalog[open] > summary b { transform: rotate(45deg); }
.audience-program-map { margin-top: 2.5rem; padding: 2rem; border: 1px solid var(--line); background: #eef1f4; }
.audience-program-map > header { margin-bottom: 1.6rem; }
.audience-program-map > header span { color: var(--signal); font-size: .7rem; font-weight: 850; letter-spacing: .13em; }
.audience-program-map > header h3, .audience-program-map > header p { margin: 0; }
.audience-program-map > header > div { display: grid; grid-template-columns: minmax(240px,.85fr) minmax(360px,1.15fr); gap: clamp(2rem,5vw,5rem); align-items: end; margin-top: .8rem; padding-bottom: 1.35rem; border-bottom: 1px solid var(--line); }
.audience-program-map > header h3 { max-width: 17ch; font-size: clamp(1.45rem,2.2vw,2rem); line-height: 1.25; }
.audience-program-map > header p { max-width: 58ch; padding-left: 1.15rem; border-left: 3px solid var(--signal); color: #374454; font-size: .9rem; line-height: 1.75; }
.audience-program-map > div { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.audience-program-map article { min-height: 185px; padding: 1.2rem; background: var(--white); }
.audience-program-map article > b { display: block; color: var(--signal); font-family: Georgia, serif; font-size: 1.25rem; }
.audience-program-map article > strong { display: block; margin: .45rem 0 .75rem; font-size: 1.05rem; }
.audience-program-map article p { margin: 0; color: #374454; font-size: .82rem; line-height: 1.75; }
.audience-program-map article em { display: inline-block; min-width: 3.4rem; color: var(--signal); font-style: normal; font-weight: 800; }
.catalog-groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.catalog-groups > section { padding: 2rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.catalog-groups > section:nth-child(2n) { border-right: 0; }
.catalog-groups header { min-height: 112px; border-bottom: 3px solid var(--ink); }
.catalog-groups header > span { color: var(--signal); font-size: .7rem; font-weight: 800; letter-spacing: .13em; }
.catalog-groups header h3 { margin: .55rem 0 .25rem; }
.catalog-groups header small { color: var(--muted); }
.catalog-groups ol { margin: 0; padding: 0; list-style: none; counter-reset: catalog; }
.catalog-groups li { position: relative; padding: 1rem 0 1rem 2.3rem; border-bottom: 1px solid var(--line); counter-increment: catalog; }
.catalog-groups li::before { content: counter(catalog, decimal-leading-zero); position: absolute; left: 0; top: 1rem; color: var(--signal); font-family: Georgia, serif; }
.catalog-groups li p { margin: .3rem 0 0; color: #4a5562; font-size: .92rem; }
.catalog-action { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 1.6rem 2rem; }
.catalog-action p { max-width: 760px; margin: 0; }
.journey { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 1px; margin: 2.5rem 0 0; padding: 0; list-style: none; border: 1px solid var(--line); background: var(--line); }
.journey li { min-height: 180px; padding: 1.4rem; background: var(--white); }
.journey span, .journey strong, .journey small { display: block; }
.journey span { color: var(--signal); font-family: Georgia, serif; font-size: 1.35rem; }
.journey strong { margin: 1.4rem 0 .5rem; }
.journey small { color: var(--muted); line-height: 1.5; }
.system-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.3rem; margin-top: 2.5rem; }
.system-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 1rem; margin-top: 2rem; padding: 1.15rem 1.4rem; color: var(--white); background: var(--ink); text-align: center; }
.system-flow b { color: #ff7653; font-size: 1.4rem; }
.system-card { min-height: 590px; display: flex; flex-direction: column; padding: 2rem; border: 1px solid var(--line); background: var(--white); }
.system-card > span { color: var(--signal); font-size: .72rem; font-weight: 800; letter-spacing: .13em; }
.system-card h3 { margin: 1rem 0; font-size: 1.75rem; }
.system-card p { color: #374454; }
.system-card ul { margin: 1rem 0 1.5rem; padding-left: 1.15rem; color: #374454; }
.system-card li { margin: .55rem 0; line-height: 1.6; }
.system-card strong { display: block; margin-top: auto; padding-top: 1.2rem; border-top: 1px solid var(--line); font-size: .92rem; }
.integrated-system-note { display: grid; grid-template-columns: 130px 1fr; gap: 1.4rem; margin-top: 1.4rem; padding: 1.5rem 1.7rem; border-left: 5px solid var(--signal); background: var(--white); }
.integrated-system-note strong { color: var(--signal); }
.integrated-system-note p { margin: 0; color: #374454; }
.service-foundation { max-width: none; grid-template-columns: minmax(330px, .9fr) minmax(0, 1.1fr); gap: clamp(3rem, 6vw, 6rem); padding: 2rem 0 4rem; }
.service-foundation h2 { max-width: 520px; }
.service-cta { display: flex; align-items: center; justify-content: space-between; gap: 2rem; margin-top: 2.5rem; padding: 2rem; color: var(--white); background: var(--ink); }
.service-cta h3 { margin: .45rem 0 0; }
.service-cta .button { border-color: var(--white); background: var(--white); color: var(--ink); white-space: nowrap; }
.book-feature { display: grid; grid-template-columns: minmax(310px, .78fr) minmax(0, 1.22fr); gap: clamp(3rem, 6vw, 6rem); align-items: start; }
.book-cover-image { margin: 0; position: sticky; top: 110px; }
.book-cover-image img { display: block; width: 100%; height: auto; object-fit: contain; }
.book-cover-image figcaption { margin-top: .8rem; color: var(--muted); font-size: .8rem; text-align: center; }
.book-intro h2, .next-books .book-title { font-size: clamp(2rem, 3vw, 3rem); line-height: 1.18; }
.book-intro h2 { margin: .6rem 0 .4rem; }
.book-subtitle { margin: 0 0 2rem; color: var(--signal); font-size: 1.12rem; font-weight: 750; }
.book-lede { max-width: 680px; margin: 0 0 1.6rem; font-size: 1.16rem; line-height: 1.85; }
.book-keypoints { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.book-keypoints li { display: grid; grid-template-columns: 155px 1fr; gap: 1.2rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.book-keypoints span { color: var(--muted); }
.book-meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem 1.5rem; margin: 2rem 0 0; padding: 1.4rem; background: var(--white); }
.book-meta div { min-width: 0; }
.book-meta dt { color: var(--muted); font-size: .73rem; font-weight: 700; }
.book-meta dd { margin: .25rem 0 0; font-size: .9rem; font-weight: 700; overflow-wrap: anywhere; }
.book-problem { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(3rem, 7vw, 7rem); }
.book-problem p { margin-top: 0; font-size: 1.08rem; }
.book-problem blockquote { margin: 2rem 0 0; padding: 1.25rem 1.5rem; border-left: 5px solid var(--signal); background: var(--white); font-family: Georgia, "Times New Roman", "Noto Serif KR", serif; font-size: 1.35rem; }
.book-questions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-top: 2.5rem; border: 1px solid var(--line); background: var(--line); }
.book-questions article { min-height: 230px; padding: 1.7rem; background: var(--white); }
.book-questions span { color: var(--signal); font-family: Georgia, serif; font-size: 1.45rem; }
.book-questions h3 { margin: 1.2rem 0 .6rem; }
.book-questions p { margin-bottom: 0; color: #374454; }
.book-architecture { padding: clamp(3rem, 6vw, 5rem); color: var(--white); background: var(--ink); }
.book-architecture .eyebrow { color: #ff8a66; }
.books-page .book-problem h2,
.books-page .book-architecture h2,
.books-page > .section:not(.book-feature) > h2 { max-width: 900px; font-size: clamp(1.55rem, 2.1vw, 2rem); line-height: 1.25; }
.books-page > .next-books-section > h2 { max-width: none; font-size: clamp(2rem, 4vw, 4rem); line-height: 1.2; }
.book-architecture h2 { margin: .55rem 0 1.15rem; }
.book-architecture > div > p { max-width: 900px; margin: 0; }
.book-chain { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin: 2.5rem 0; padding: 0; list-style: none; background: #617086; border: 1px solid #617086; }
.book-chain li { min-height: 150px; display: flex; flex-direction: column; padding: 1.25rem; background: var(--ink); }
.book-chain small { color: #ff8a66; font-weight: 800; }
.book-chain strong { margin: .9rem 0 .45rem; overflow-wrap: anywhere; }
.book-chain span { margin-top: auto; color: #bdc7d3; font-size: .84rem; }
.book-architecture .button.secondary { border-color: var(--white); color: var(--white); }
.reader-list { display: flex; flex-wrap: wrap; gap: .65rem; margin: 2rem 0 3rem; }
.reader-list span { padding: .65rem .9rem; border: 1px solid var(--line); background: var(--white); font-weight: 700; }
.reader-resource { display: flex; align-items: center; justify-content: space-between; gap: 3rem; padding: 2rem; border: 1px solid var(--line); background: var(--white); }
.reader-resource > div { display: grid; grid-template-columns: auto 1fr; column-gap: 1.25rem; align-items: center; }
.reader-resource .number { grid-row: 1 / 3; color: var(--signal); font-family: Georgia, serif; font-size: 4rem; line-height: 1; }
.reader-resource h3, .reader-resource p { margin: 0; }
.reader-resource p { color: var(--muted); }
.next-books { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin-top: 2.5rem; border: 1px solid var(--line); background: var(--line); }
.next-books article { min-height: 560px; display: flex; flex-direction: column; padding: 2rem; background: var(--white); }
.next-books article > span { color: var(--signal); font-size: .74rem; font-weight: 800; letter-spacing: .12em; }
.next-books .book-title { margin: 1rem 0; }
.working-title { color: var(--signal); font-family: "Pretendard", "Noto Sans KR", Arial, sans-serif; font-size: .62em; font-style: normal; font-weight: 800; white-space: nowrap; }
.next-books p { color: #374454; }
.next-book-hook { min-height: 105px; font-size: 1.02rem; }
.next-book-scenes { margin: 1rem 0; padding: 1.25rem; background: var(--paper); }
.next-book-scenes small { color: var(--signal); font-weight: 800; }
.next-book-scenes ul { margin: .8rem 0 0; padding-left: 1.2rem; }
.next-book-scenes li { margin: .45rem 0; }
.next-book-view { margin-bottom: 1.5rem; }
.next-books strong { margin-top: auto; padding-top: 1.2rem; border-top: 1px solid var(--line); }
.transformation-roadmap { border-top: 0; }
.transformation-roadmap .process-lead { max-width: 850px; }
.transformation-stages { display: grid; grid-template-columns: .9fr 1.25fr .9fr; gap: 1px; margin: 2.5rem 0 0; padding: 1px; list-style: none; background: var(--line); }
.transformation-stages li { min-height: 280px; padding: 2rem; background: var(--white); }
.transformation-stages li.current { color: var(--white); background: var(--ink); }
.transformation-stages small { color: var(--signal); font-size: .78rem; font-weight: 800; letter-spacing: .12em; }
.transformation-stages h3 { margin: 1.2rem 0 1rem; font-size: clamp(1.45rem, 2.5vw, 2.2rem); }
.transformation-stages p { margin: 0; color: #536171; }
.transformation-stages .current p { color: #c7d0dc; }
.status { display: inline-flex; align-items: center; gap: .5rem; border: 1px solid var(--line); padding: .45rem .7rem; font-size: .78rem; color: var(--muted); }
.status::before { content: ""; width: 7px; height: 7px; background: #d39b35; border-radius: 50%; }
.wcs-cover { border: 1px solid var(--ink); padding: clamp(2rem, 5vw, 5rem); background: var(--white); position: relative; overflow: hidden; }
.wcs-cover::after { content: "WCS"; position: absolute; right: -1rem; bottom: -5rem; font-family: Georgia, serif; font-size: 15rem; color: var(--paper-deep); line-height: 1; z-index: 0; }
.wcs-cover > * { position: relative; z-index: 1; }
.wcs-sample { border-top: 1px solid var(--line); }
.sample-sheet { background: var(--white); border: 1px solid var(--line); }
.sample-head { display: grid; grid-template-columns: 1.25fr .75fr; gap: 2rem; padding: clamp(2rem, 5vw, 4rem); border-bottom: 1px solid var(--line); }
.sample-head h2 { margin-bottom: 1rem; }
.sample-meta { align-self: end; color: var(--muted); }
.sample-meta strong { display: block; color: var(--ink); font-size: 1.05rem; }
.sample-body { padding: clamp(2rem, 5vw, 4rem); }
.sample-lead { max-width: 820px; font-size: 1.2rem; }
.sample-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin-top: 2.5rem; background: var(--line); border: 1px solid var(--line); }
.sample-item { padding: 2rem; background: var(--white); }
.sample-item .label { color: var(--signal); font-size: .75rem; font-weight: 800; letter-spacing: .12em; }
.sample-item h3 { margin: .6rem 0 1rem; }
.archive-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.archive-list li { border-bottom: 1px solid var(--line); }
.archive-list a { display: grid; grid-template-columns: 150px 1fr auto; gap: 1.5rem; align-items: center; padding: 1.25rem 0; text-decoration: none; }
.archive-list a:hover strong { color: var(--signal); }
.archive-list time, .archive-list span { color: var(--muted); font-size: .9rem; }
.editorial-contract { display: grid; grid-template-columns: .75fr 1.25fr; gap: 4rem; padding: clamp(2rem, 5vw, 4rem); color: var(--white); background: var(--ink); }
.editorial-contract h2 { margin-bottom: 0; }
.editorial-contract p { margin-top: 0; font-size: 1.08rem; }
.channel-flow { margin-top: 3rem; }
.weekly-insights { margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.weekly-insights h3 { margin: .45rem 0 .5rem; }
.weekly-insights > p { margin: 0 0 1rem; color: var(--muted); }
.weekly-insights .archive-list { margin-top: 1rem; }
.wcs-subscribe { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.wcs-subscribe h2 { margin: .45rem 0 .8rem; }
.wcs-page-head { padding-top: clamp(3.75rem, 5vw, 4.5rem); padding-bottom: clamp(2.75rem, 4vw, 3.25rem); }
.wcs-page-head h1 { max-width: 1000px; margin-top: .55rem; font-size: clamp(2.65rem, 3.8vw, 3.65rem); line-height: 1.1; letter-spacing: -.04em; text-wrap: balance; }
.wcs-page-head p { max-width: 1040px; margin-top: 1.25rem; line-height: 1.75; }
.wcs-page-head + .wcs-subscribe { padding-top: clamp(3rem, 4vw, 3.75rem); }
.wcs-launch-note { margin-top: 1.35rem; padding: 1rem 1.1rem; border-left: 3px solid var(--signal); background: #f5eee5; }
.wcs-launch-note strong, .wcs-launch-note span { display: block; }
.wcs-launch-note strong { margin-bottom: .35rem; color: var(--ink); font-size: .9rem; }
.wcs-launch-note span { color: #4e5966; font-size: .82rem; line-height: 1.65; }
.subscribe-form { padding: clamp(1.4rem, 3vw, 2.25rem); border: 1px solid var(--ink); background: var(--white); }
.subscribe-form > label:first-of-type { display: block; margin-bottom: .55rem; font-weight: 800; }
.subscribe-row { display: grid; grid-template-columns: 1fr auto; gap: .65rem; }
.subscribe-row input { min-width: 0; padding: .9rem 1rem; border: 1px solid var(--line); background: white; font: inherit; }
.subscribe-consent { display: flex; gap: .55rem; align-items: flex-start; margin-top: 1rem; color: var(--muted); font-size: .88rem; line-height: 1.5; }
.subscribe-consent input { margin-top: .2rem; }
.wcs-description { display: grid; grid-template-columns: minmax(360px, 1fr) minmax(0, 1.25fr); gap: clamp(2rem, 5vw, 5rem); }
.wcs-description header { position: sticky; top: 6.5rem; align-self: start; }
.wcs-description header h2 { max-width: 620px; margin-top: .55rem; font-size: clamp(2.15rem, 3.5vw, 3.65rem); line-height: 1.14; letter-spacing: -.035em; text-wrap: balance; }
.wcs-prose { max-width: 760px; }
.wcs-prose h3 { margin: 2.4rem 0 .7rem; }
.wcs-prose li { margin: .55rem 0; }
.wcs-prose blockquote { margin: 2.5rem 0; padding: 1.5rem 1.75rem; border-left: 5px solid var(--signal); color: var(--ink); background: var(--white); font-family: Georgia, serif; font-size: clamp(1.15rem, 2vw, 1.45rem); line-height: 1.7; }
.wcs-publisher { padding-top: 1.5rem; border-top: 1px solid var(--line); font-weight: 700; }
.wcs-archive-scroll { max-height: 430px; overflow-y: auto; margin-top: 1.6rem; padding-right: .65rem; scrollbar-gutter: stable; }
.wcs-archive-scroll:focus { outline: 2px solid var(--signal); outline-offset: 4px; }
.wcs-archive .archive-list a { grid-template-columns: 120px 120px minmax(0, 1fr); }
.archive-issue { color: var(--ink) !important; font-weight: 800; }
.archive-issue small { margin-left: .3rem; color: var(--signal); font-size: .72rem; }
.wcs-bottom-cta { box-sizing: border-box; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: clamp(2rem, 6vw, 6rem); align-items: center; padding: clamp(3.5rem, 7vw, 6rem) clamp(2rem, 5vw, 5rem); color: white; background: var(--ink); overflow: hidden; }
.wcs-bottom-cta h2 { max-width: 950px; margin: .45rem 0 .75rem; color: white; font-size: clamp(2.6rem, 5vw, 5.4rem); line-height: 1.08; overflow-wrap: anywhere; }
.wcs-bottom-cta p { max-width: 760px; margin: 0; color: rgba(255,255,255,.76); }
.wcs-bottom-cta .button { flex: 0 0 auto; }
.channel-flow .process-card { min-height: 320px; }
.archive-empty { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 1.5rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.archive-empty p { margin: 0; max-width: 760px; }
.article-list { margin: 2rem 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.archive-heading { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; }
.archive-heading span { color: var(--signal); font-family: "Pretendard", "Noto Sans KR", Arial, sans-serif; font-size: .95rem; font-weight: 800; letter-spacing: 0; }
.featured-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.featured-article { min-height: 330px; border: 1px solid var(--line); background: var(--white); }
.featured-article a { display: flex; height: 100%; padding: 2rem; flex-direction: column; text-decoration: none; }
.featured-article h3 { margin: 1.4rem 0 .6rem; font-size: clamp(1.65rem, 2.8vw, 2.4rem); }
.featured-article p { color: #374454; }
.featured-article .featured-subtitle { margin: 0 0 .8rem; color: var(--muted); font-weight: 700; }
.featured-meta { display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: .82rem; }
.featured-meta span { color: var(--signal); font-weight: 800; }
.read-more { margin-top: auto; padding-top: 1rem; color: var(--signal); }
.featured-article a:hover h3 { color: var(--signal); }
.article-tools { display: grid; gap: 1.2rem; margin: 2rem 0 3rem; }
.article-search { display: grid; gap: .5rem; max-width: 560px; font-size: .82rem; font-weight: 800; }
.article-search input { width: 100%; border: 1px solid var(--line); background: var(--white); padding: .9rem 1rem; color: var(--ink); font: inherit; font-weight: 400; }
.article-filters { display: flex; flex-wrap: wrap; gap: .55rem; }
.filter-button { border: 1px solid var(--line); background: transparent; padding: .55rem .8rem; color: var(--ink); cursor: pointer; }
.filter-button.active { border-color: var(--ink); background: var(--ink); color: white; }
.archive-month { margin-top: 3rem; }
.archive-month > h3 { margin-bottom: .5rem; color: var(--muted); font-size: 1.1rem; }
.archive-status { color: var(--muted); font-size: .9rem; }
#load-more { cursor: pointer; }
[hidden] { display: none !important; }
.article-list li { border-bottom: 1px solid var(--line); }
.article-list a { display: grid; grid-template-columns: 145px 1fr auto; gap: 2rem; align-items: center; padding: 1.5rem 0; text-decoration: none; }
.article-list time { color: var(--muted); font-size: .9rem; }
.article-list strong { display: block; font-family: Georgia, "Times New Roman", "Noto Serif KR", serif; font-size: 1.25rem; line-height: 1.35; }
.article-list small { display: block; margin-top: .35rem; color: var(--muted); }
.article-list .article-teaser { max-width: 760px; margin: .8rem 0 0; color: #374454; font-size: .96rem; line-height: 1.72; }
.article-list .arrow { color: var(--signal); font-size: 1.4rem; }
.article-list a:hover strong { color: var(--signal); }
.article-page { max-width: 920px; margin: 0 auto; padding: 5rem 0 7rem; }
.article-back { display: inline-block; margin-bottom: 3rem; color: var(--muted); text-decoration: none; }
.article-header { padding-bottom: 2.25rem; border-bottom: 1px solid var(--line); }
.article-header h1 { max-width: 820px; margin: 1rem 0 1.1rem; font-size: clamp(2.45rem, 4.2vw, 3.65rem); line-height: 1.16; letter-spacing: -.035em; }
.article-header .subtitle { max-width: 760px; margin: 0; color: var(--muted); font-size: clamp(1.08rem, 1.6vw, 1.22rem); line-height: 1.65; }
.article-meta { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1.5rem; color: var(--muted); font-size: .9rem; }
.article-body { max-width: 760px; margin: 3rem auto 0; font-family: Georgia, "Times New Roman", "Noto Serif KR", serif; font-size: 1.08rem; line-height: 1.9; }
.article-body p { margin: 0 0 .48rem; }
.article-body p:has(strong:only-child) { margin: 1.15rem 0; }
.article-body h2 { margin: 3.5rem 0 1.25rem; font-size: clamp(1.6rem, 2.25vw, 1.95rem); line-height: 1.4; letter-spacing: -.02em; }
.article-body h3 { margin: 2.8rem 0 1rem; font-size: clamp(1.3rem, 1.8vw, 1.55rem); line-height: 1.45; }
.article-body h2 + p, .article-body h3 + p { margin-top: 0; }
.article-body ul, .article-body ol { margin: 0 0 1.7rem; padding-left: 1.4rem; }
.article-body li { margin-bottom: .65rem; }
.article-body blockquote { margin: 2.5rem 0; padding: 1.2rem 1.6rem; border-left: 4px solid var(--signal); background: var(--white); }
.article-body figure { margin: 2.5rem 0; }
.article-body img { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.article-body figcaption { margin-top: .7rem; color: var(--muted); font-family: "Pretendard", "Noto Sans KR", Arial, sans-serif; font-size: .85rem; text-align: center; }
.article-source { max-width: 760px; margin: 3rem auto 0; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.legal-grid { padding: 4rem 0 6rem; display: grid; grid-template-columns: 240px 1fr; gap: 5rem; }
.legal-grid aside { position: sticky; top: 120px; align-self: start; }
.legal-grid article section { border-top: 1px solid var(--line); padding: 2rem 0; }
.legal-grid code { background: var(--paper-deep); padding: .15rem .35rem; }
.notice { border-left: 4px solid var(--signal); padding: 1rem 1.3rem; background: var(--white); }

.newsletter-issue { max-width: 1120px; margin: 0 auto; padding: 0 32px 6rem; }
.issue-hero { padding: clamp(3.8rem, 6vw, 5.2rem) 0 clamp(3rem, 5vw, 4rem); border-bottom: 1px solid var(--line); }
.issue-date { margin: .8rem 0 0; color: var(--muted); font-size: .9rem; font-weight: 700; }
.issue-hero h1 { max-width: 820px; margin: 1rem 0 1.35rem; font-size: clamp(3rem, 5vw, 4.5rem); line-height: 1.1; letter-spacing: -.045em; }
.issue-deck { max-width: 780px; margin: 0; color: #334152; font-size: clamp(1.02rem, 1.35vw, 1.16rem); line-height: 1.72; }
.issue-summary { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(2.5rem, 5vw, 4.5rem); align-items: start; padding: clamp(3rem, 5vw, 4rem) 0; border-bottom: 1px solid var(--line); }
.issue-summary span, .issue-section-head > span { color: var(--signal); font-size: .78rem; font-weight: 900; letter-spacing: .16em; }
.issue-summary h2 { max-width: 560px; margin: .7rem 0 0; font-size: clamp(2.15rem, 3.3vw, 3rem); line-height: 1.2; }
.issue-summary p { margin: 0 0 .9rem; font-size: 1rem; line-height: 1.75; }
.issue-section { padding: clamp(3.8rem, 6vw, 5.5rem) 0; border-bottom: 1px solid var(--line); }
.issue-section-head { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: 1rem clamp(2.5rem, 6vw, 5.5rem); align-items: end; margin-bottom: 2.5rem; }
.issue-section-head > span { grid-column: 1 / -1; }
.issue-section-head h2 { max-width: 680px; margin: 0; font-size: clamp(2.15rem, 3.5vw, 3.05rem); line-height: 1.2; }
.issue-section-head p { margin: 0; color: var(--muted); font-size: .98rem; line-height: 1.72; }
.issue-summary h2 br, .issue-section-head h2 br { display: inline-block; width: .28em; content: ""; }
.cluster-analysis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0 0 1.5rem; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.cluster-analysis > div { padding: 1.35rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #f7f1e7; }
.cluster-analysis b, .signal-movement b { color: var(--signal); font-size: .78rem; letter-spacing: .08em; }
.cluster-analysis p, .signal-movement p { margin: .65rem 0 0; color: #334152; line-height: 1.7; }
.signal-movement { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.cross-reading { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; margin-bottom: 1.5rem; }
.cross-reading > div { padding: 1.5rem; border-top: 5px solid var(--ink); background: var(--white); }
.cross-reading b { color: var(--signal); font-size: .78rem; letter-spacing: .08em; }
.cross-reading p { margin: .65rem 0 0; color: #334152; line-height: 1.75; }
.signal-movement > div { padding: 1.5rem; border: 1px solid var(--line); background: var(--white); }
.signal-movement ul { margin: .75rem 0 0; padding-left: 1.25rem; color: #334152; line-height: 1.75; }
.issue-stories { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; align-items: stretch; }
.issue-story { min-width: 0; padding: clamp(1.7rem, 2.7vw, 2.4rem); border: 1px solid var(--line); border-top: 6px solid var(--ink); background: var(--white); }
.story-meta { display: flex; justify-content: space-between; gap: 1rem; margin: -1rem 0 1.5rem; color: var(--muted); font-size: .78rem; font-weight: 800; }
.story-meta span { color: var(--signal); }
.issue-story h3 { max-width: 690px; margin: 1rem 0 1.7rem; font-size: clamp(1.55rem, 2.3vw, 2rem); line-height: 1.38; }
.issue-story h3 a { margin: 0; color: inherit; text-decoration-color: var(--signal); text-decoration-thickness: 2px; text-underline-offset: .35rem; }
.issue-story h4 { margin: 2rem 0 .75rem; padding-top: 1.2rem; border-top: 1px solid var(--line); color: var(--signal); font-size: .8rem; letter-spacing: .1em; }
.issue-story h4:nth-of-type(2) { margin: 2.2rem 0 0; padding: .9rem 1rem 0; border-top: 3px solid var(--signal); background: #f7f1e7; }
.issue-story h4:nth-of-type(2) ~ p { margin: 0; padding: .8rem 1rem 0; background: #f7f1e7; }
.issue-story h4:nth-of-type(2) ~ p + p { padding-bottom: 1rem; }
.issue-story p { margin: 0 0 .9rem; color: #334152; font-size: .98rem; line-height: 1.76; }
.issue-story a { display: inline-block; margin-top: 1.2rem; font-weight: 800; text-decoration-color: var(--signal); text-underline-offset: .35rem; }
.issue-questions { padding: clamp(4.5rem, 8vw, 8rem) 0; }
.issue-questions h2 { margin: .6rem 0 2rem; }
.issue-questions ol { margin: 0; padding: 0; list-style: none; counter-reset: questions; border-top: 1px solid var(--line); }
.issue-questions li { display: grid; grid-template-columns: 70px 1fr; gap: 1rem; padding: 1.4rem 0; border-bottom: 1px solid var(--line); font-size: 1.12rem; line-height: 1.65; counter-increment: questions; }
.issue-questions li::before { content: "0" counter(questions); color: var(--signal); font-family: Georgia, serif; font-size: 1.4rem; }
.issue-insight { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; padding: clamp(3rem, 5vw, 4.25rem); color: white; background: var(--ink); }
.issue-insight-copy { max-width: 720px; }
.issue-insight .eyebrow { color: var(--signal); }
.issue-insight-meta { display: flex; gap: .6rem; align-items: center; margin: 1rem 0 0; color: rgba(255,255,255,.68); font-size: .82rem; font-weight: 700; }
.issue-insight-meta span::after { content: "·"; margin-left: .6rem; color: var(--signal); }
.issue-insight h2 { max-width: 700px; margin: .85rem 0 1rem; color: white; font-size: clamp(2.4rem, 3.6vw, 3.45rem); line-height: 1.17; letter-spacing: -.035em; text-wrap: balance; }
.issue-insight p { max-width: 690px; margin: 0; color: rgba(255,255,255,.78); font-size: 1rem; line-height: 1.72; }
.issue-insight-link { min-width: 190px; padding: 1rem 1.15rem; border-color: rgba(255,255,255,.7); color: white; white-space: nowrap; }
.issue-footer { padding: 3.5rem 0 0; color: var(--muted); }
.issue-footer p { margin: .35rem 0 1rem; }
.issue-footer a { color: var(--ink); font-weight: 800; }

/* WCS archive pages mirror the calm, single-column reading experience of the email. */
.email-preview-page { background: #e9e7e1; }
.email-preview-bar { display: flex; justify-content: space-between; gap: 1rem; width: min(720px, calc(100% - 32px)); margin: 1.25rem auto .65rem; color: #68717b; font-size: .72rem; }
.email-preview-bar a { color: #4e5966; text-decoration: underline; text-underline-offset: .22rem; }
.email-preview-page .newsletter-issue { max-width: 720px; margin: 0 auto 2.5rem; padding: 0 clamp(24px,5vw,52px) 3.5rem; background: var(--paper); box-shadow: 0 16px 45px rgba(15,31,49,.1); }
.email-masthead { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
.email-masthead > a { display: flex; align-items: center; gap: .8rem; color: var(--ink); text-decoration: none; }
.email-masthead strong, .email-masthead small { display: block; }
.email-masthead strong { font-family: Georgia, serif; font-size: .95rem; }
.email-masthead small { margin-top: .18rem; color: var(--muted); font-size: .62rem; letter-spacing: .06em; }
.email-masthead > span { color: var(--signal); font-size: .7rem; font-weight: 900; letter-spacing: .14em; }
.newsletter-ribbon { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 1.5rem; padding: .75rem .9rem; color: var(--white); background: var(--ink); }
.newsletter-ribbon span { color: #ff7653; font-size: .7rem; font-weight: 900; letter-spacing: .1em; }
.newsletter-ribbon b { font-size: .72rem; font-weight: 650; }
.email-preview-page .issue-hero { padding: 2.4rem 0 2.7rem; }
.email-preview-page .issue-hero h1 { max-width: 620px; margin-top: .9rem; font-size: clamp(2rem,5vw,2.65rem); line-height: 1.16; letter-spacing: -.035em; }
.email-preview-page .issue-deck { font-size: 1rem; }
.email-preview-page .issue-summary,
.email-preview-page .issue-section-head,
.email-preview-page .issue-stories,
.email-preview-page .cluster-analysis,
.email-preview-page .cross-reading,
.email-preview-page .signal-movement,
.email-preview-page .issue-insight { grid-template-columns: 1fr; }
.email-preview-page .issue-summary { gap: 1.5rem; padding: 2.7rem 0; }
.email-preview-page .issue-summary h2,
.email-preview-page .issue-section-head h2 { font-size: clamp(1.45rem,3.5vw,1.8rem); line-height: 1.35; }
.email-preview-page .issue-section { padding: 3.4rem 0; }
.email-preview-page .issue-section-head { gap: 1rem; margin-bottom: 1.7rem; }
.email-preview-page .issue-section-head > span { grid-column: auto; }
.email-preview-page .cluster-analysis { margin-bottom: 1.25rem; border-left: 0; }
.email-preview-page .cluster-analysis > div { padding: 1.15rem 1.2rem; border-left: 1px solid var(--line); }
.email-preview-page .issue-stories { gap: 1.25rem; }
.email-preview-page .issue-story { padding: 1.55rem clamp(1.2rem,4vw,1.75rem); border-top-width: 4px; }
.email-preview-page .issue-story h3 { margin-bottom: 1.45rem; font-size: clamp(1.15rem,3vw,1.3rem); line-height: 1.5; }
.email-preview-page .cross-reading { gap: 1rem; }
.email-preview-page .cross-reading > div,
.email-preview-page .signal-movement > div { padding: 1.2rem; }
.email-preview-page .issue-insight { gap: 1.5rem; padding: 2rem clamp(1.4rem,5vw,2.2rem); }
.email-preview-page .issue-insight h2 { font-size: clamp(1.45rem,3.5vw,1.8rem); }
.email-preview-page .issue-insight-link { justify-self: start; }
.email-preview-page .issue-footer { padding-top: 2.8rem; text-align: center; }
.email-preview-page .issue-footer > div { display: flex; justify-content: center; gap: 1.2rem; flex-wrap: wrap; }
.email-preview-page .issue-footer small { display: block; margin-top: 1.5rem; color: #7b838c; font-size: .72rem; }

.site-footer { background: #0e1a2a; color: var(--white); padding: 3.2rem max(24px, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.site-footer p { color: #aeb7c1; margin: .4rem 0; }
.footer-links { display: flex; justify-content: flex-end; gap: 1.2rem; flex-wrap: wrap; }
.rights { grid-column: 1 / -1; border-top: 1px solid #354151; padding-top: 1.3rem; display: flex; justify-content: space-between; gap: 1rem; color: #aeb7c1; font-size: .78rem; }

@media (max-width: 800px) {
  .site-header { min-height: 72px; }
  .menu { display: block; }
  nav { display: none; position: absolute; top: 72px; left: 0; right: 0; padding: 1.2rem 24px; background: var(--paper); border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; }
  nav.open { display: flex; }
  .hero, .split, .legal-grid { grid-template-columns: 1fr; gap: 2.5rem; padding-left: 24px; padding-right: 24px; }
  .hero { padding-top: 4.5rem; }
  .hero-title { font-size: clamp(3rem, 13vw, 4.6rem); }
  .hero-title span { white-space: normal; }
  .hero-aside { border-left: 0; border-top: 1px solid var(--line); padding: 1.5rem 0 0; }
  .section, .page-head { padding-left: 24px; padding-right: 24px; }
  .cards, .cards.cards-3, .framework-grid, .problem-grid, .service-domains, .offer-grid, .featured-services, .catalog-groups, .system-grid, .book-feature, .book-problem, .book-questions, .next-books, .transformation-stages, .book-system-map, .application-path { grid-template-columns: 1fr; }
  .transformation-stages li { min-height: 0; }
  .book-cover-image { position: static; width: min(100%, 430px); justify-self: center; }
  .book-keypoints li { grid-template-columns: 1fr; gap: .2rem; }
  .book-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 1rem; }
  .book-chain { grid-template-columns: 1fr; }
  .book-chain li, .next-books article, .next-book-hook { min-height: 0; }
  .book-problem { gap: 1.5rem; }
  .reader-resource { align-items: flex-start; flex-direction: column; }
  .journey { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .journey li { min-height: 150px; }
  .system-card { min-height: 0; }
  .offer-card { min-height: 0; }
  .offer-card header { min-height: 0; }
  .offer-details div, .integrated-system-note { grid-template-columns: 1fr; gap: .35rem; }
  .featured-services article { min-height: 0; }
  .catalog-groups > section { border-right: 0; }
  .audience-program-map > header > div, .audience-program-map > div { grid-template-columns: 1fr; }
  .audience-program-map > header p { padding: 1rem 0 0; border-left: 0; border-top: 2px solid var(--signal); }
  .audience-program-map article { min-height: 0; }
  .catalog-action { align-items: flex-start; flex-direction: column; }
  .system-flow { grid-template-columns: 1fr; gap: .5rem; }
  .system-flow b { transform: rotate(90deg); }
  .service-cta { align-items: flex-start; flex-direction: column; }
  .process-heading { flex-wrap: wrap; gap: .45rem .75rem; }
  .process-heading i { transform: rotate(90deg); }
  .process-title br { display: inline-block; width: .28em; content: ""; }
  .process-ownership { grid-template-columns: 1fr; }
  .process-ownership i { justify-self: center; transform: rotate(90deg); }
  .process-cards { gap: 1.4rem; }
  .process-card:not(:last-child)::after { content: "↓"; right: 50%; top: auto; bottom: -1.65rem; transform: translateX(50%); }
  .process-card h2, .process-card > p, .process-card .process-output { min-height: 0; }
  .sample-head, .sample-grid, .editorial-contract { grid-template-columns: 1fr; }
  .wcs-subscribe, .wcs-description { grid-template-columns: 1fr; }
  .page-head h1, .wcs-page-head h1 { font-size: clamp(2.5rem, 10vw, 3.35rem); }
  .page-head { padding-top: 3.2rem; padding-bottom: 2.4rem; }
  .page-head + .section { padding-top: 2.8rem; }
  .architectures-page .page-head h1, .wcs-page-head h1 { font-size: clamp(2.35rem, 9vw, 3rem); }
  .work-page .page-head { padding-top: 3.2rem; padding-bottom: 2.4rem; }
  .work-page .page-head h1 { font-size: clamp(2.35rem, 9vw, 3rem); }
  .work-page .page-head + .section { padding-top: 2.8rem; }
  .wcs-page-head h1 br { display: inline-block; width: .28em; content: ""; }
  .wcs-description header { position: static; }
  .wcs-bottom-cta { align-items: flex-start; flex-direction: column; }
  .wcs-bottom-cta { grid-template-columns: 1fr; }
  .wcs-bottom-cta h2 { font-size: clamp(2.4rem, 10vw, 4rem); }
  .subscribe-row { grid-template-columns: 1fr; }
  .archive-list a { grid-template-columns: 1fr; gap: .2rem; }
  .wcs-archive .archive-list a { grid-template-columns: 1fr; gap: .35rem; }
  .archive-empty { align-items: flex-start; flex-direction: column; }
  .article-list a { grid-template-columns: 1fr; gap: .3rem; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-article { min-height: 0; }
  .article-list .arrow { display: none; }
  .article-page { padding: 3rem 24px 5rem; }
  .legal-grid aside { position: static; }
  .site-footer { grid-template-columns: 1fr; }
  .newsletter-issue { padding-left: 24px; padding-right: 24px; }
  .issue-hero h1 br { display: inline-block; width: .28em; content: ""; }
  .issue-summary, .issue-section-head, .issue-stories, .issue-insight, .cluster-analysis, .signal-movement, .cross-reading { grid-template-columns: 1fr; }
  .issue-story h3 { min-height: 0; }
  .issue-questions li { grid-template-columns: 48px 1fr; }
  .email-preview-bar { margin-top: .75rem; }
  .email-preview-page .newsletter-issue { width: 100%; margin-bottom: 0; padding-left: 22px; padding-right: 22px; box-shadow: none; }
  .email-masthead > span { display: none; }
  .newsletter-ribbon { align-items: flex-start; flex-direction: column; }
  .footer-links { justify-content: flex-start; }
  .rights { flex-direction: column; }
}
.inquiry-dialog{width:min(760px,calc(100% - 32px));max-height:calc(100vh - 32px);padding:0;border:0;background:#fff;color:var(--ink);box-shadow:0 28px 80px rgba(9,26,45,.28)}
.inquiry-dialog::backdrop{background:rgba(9,26,45,.66);backdrop-filter:blur(3px)}
.inquiry-dialog-head{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;padding:26px 30px;background:var(--ink);color:#fff}
.inquiry-dialog-head span{display:block;margin-bottom:7px;color:var(--orange);font-size:.72rem;font-weight:800;letter-spacing:.14em}
.inquiry-dialog-head h2{margin:0;font-size:clamp(1.45rem,3vw,2.15rem);line-height:1.22}
.inquiry-close{width:42px;height:42px;border:1px solid rgba(255,255,255,.55);background:transparent;color:#fff;font-size:1.6rem;line-height:1;cursor:pointer}
.inquiry-dialog form{padding:28px 30px 30px}
.inquiry-note{margin:0 0 22px;color:#465366;line-height:1.7}
.inquiry-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.inquiry-fields label{display:grid;gap:8px;font-size:.88rem;font-weight:750}
.inquiry-fields input,.inquiry-fields select,.inquiry-fields textarea{width:100%;box-sizing:border-box;border:1px solid #bac0c8;background:#fff;padding:12px 13px;color:var(--ink);font:inherit}
.inquiry-fields textarea{resize:vertical;line-height:1.65}
.inquiry-wide{grid-column:1/-1}
.inquiry-consent{display:flex;align-items:flex-start;gap:9px;margin-top:20px;font-size:.86rem;line-height:1.55}
.inquiry-consent input{margin-top:4px}
.inquiry-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}
.inquiry-actions button{min-height:46px;padding:0 20px;border:1px solid var(--ink);background:#fff;color:var(--ink);font:inherit;font-weight:800;cursor:pointer}
.inquiry-actions button[type="submit"]{background:var(--ink);color:#fff}
.inquiry-success{margin:18px 0 0;padding:12px 14px;border-left:3px solid var(--orange);background:#f4f0e8;font-weight:750}
.contact-page{max-width:var(--max);margin:0 auto;padding:clamp(3.5rem,7vw,6.5rem) var(--gutter) clamp(5rem,9vw,8rem)}
.contact-hero{max-width:1040px;padding-bottom:clamp(2.5rem,5vw,4.5rem);border-bottom:1px solid var(--line)}
.contact-hero h1{max-width:15ch;margin:.55rem 0 1.1rem;font-size:clamp(2.8rem,6vw,5.7rem);line-height:1.03;letter-spacing:-.05em}
.contact-hero p{max-width:820px;margin:0;color:#344252;font-size:clamp(1rem,1.4vw,1.2rem);line-height:1.75}
.contact-workspace{display:grid;grid-template-columns:minmax(270px,.78fr) minmax(540px,1.22fr);gap:clamp(2rem,6vw,6rem);align-items:start;padding-top:clamp(3rem,6vw,5rem)}
.contact-context{position:sticky;top:110px}
.contact-context h2{margin:.55rem 0 1.1rem;font-size:clamp(2rem,3.8vw,3.6rem);line-height:1.08}
.contact-context>p{color:#3f4b59;line-height:1.75}
.contact-context ul{margin:1.5rem 0;padding:0;list-style:none;border-top:1px solid var(--line)}
.contact-context li{position:relative;padding:.85rem 0 .85rem 1.2rem;border-bottom:1px solid var(--line);color:var(--ink);font-size:.9rem;line-height:1.5}
.contact-context li::before{content:'';position:absolute;left:0;top:1.25rem;width:6px;height:6px;background:var(--signal)}
.contact-context .contact-email-note{margin-top:1.4rem;color:var(--muted);font-size:.82rem}
.contact-email-note a{color:var(--ink);font-weight:800}
.contact-form-panel{padding:clamp(1.5rem,3vw,2.5rem);border:1px solid var(--line);background:var(--white);box-shadow:0 20px 55px rgba(15,31,49,.08)}
.contact-form-panel>h2{margin:.45rem 0 .6rem;font-size:clamp(1.8rem,3vw,2.7rem)}
.contact-form-panel>p{margin:0 0 1.8rem;color:var(--muted);font-size:.9rem}
.contact-form-panel form{padding-top:1.7rem;border-top:1px solid var(--line)}
.contact-form-panel .inquiry-actions{align-items:center}
.contact-form-panel .inquiry-actions span{color:var(--muted);font-size:.78rem}
.contact-form-panel .form-success{margin-top:1.2rem;padding:1rem;border-left:4px solid var(--signal);background:#f5eee5;font-weight:750}

@media (max-width:980px){
  .contact-workspace{grid-template-columns:1fr}
  .contact-context{position:static;max-width:700px}
}

@media (max-width:640px){
  .inquiry-dialog{width:calc(100% - 20px);max-height:calc(100vh - 20px)}
  .inquiry-dialog-head,.inquiry-dialog form{padding:22px 20px}
  .inquiry-fields{grid-template-columns:1fr}
  .inquiry-wide{grid-column:auto}
  .contact-page{padding-top:2.5rem}
  .contact-hero h1{font-size:clamp(2.45rem,13vw,4rem)}
  .contact-workspace{grid-template-columns:1fr}
  .contact-context{position:static}
  .contact-form-panel{padding:1.25rem}
  .contact-form-panel .inquiry-actions{align-items:stretch;flex-direction:column}
}