:root {
  --ink: #271b12;
  --orange: #ea5514;
  --amber: #fb8c1f;
  --cream: #fff8ef;
  --paper: #ffffff;
  --muted: #756b63;
  --line: rgba(39, 27, 18, .16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: "HarmonyOS Sans SC", "Microsoft YaHei", Arial, sans-serif; color: var(--ink); background: var(--paper); }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.case-page { min-height: 100vh; overflow-x: hidden; overflow-y: auto; }
.case-page h1, .case-page h2, .case-page h3, .case-page p { overflow-wrap: anywhere; }
.draft-note { position: fixed; right: 20px; bottom: 20px; z-index: 50; max-width: 320px; padding: 12px 16px; border-radius: 12px; color: #fff; background: rgba(39,27,18,.92); box-shadow: 0 12px 36px rgba(0,0,0,.22); font-size: 13px; line-height: 1.5; }
.draft-note b { color: #ffad64; }
.site-head { height: 80px; padding: 0 clamp(22px, 5vw, 84px); display: flex; align-items: center; justify-content: space-between; color: #fff; background: var(--ink); }
.site-head .brand { display: flex; align-items: center; gap: 13px; font-weight: 800; letter-spacing: .04em; }
.site-head .brand img { width: 58px; height: auto; }
.site-head nav { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 38px); font-size: 14px; }
.site-head nav a { opacity: .75; }
.site-head nav a.active, .site-head nav a:hover { opacity: 1; color: #ff9b42; }
.site-head .head-cta { padding: 10px 17px; border: 1px solid rgba(255,255,255,.45); border-radius: 999px; opacity: 1; }
.logo-mark { min-width: 86px; height: 42px; padding: 0 12px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid currentColor; border-radius: 8px; font-size: 13px; font-weight: 900; letter-spacing: .08em; white-space: nowrap; }
.eyebrow { margin: 0 0 18px; font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.section-title { margin: 0; font-size: clamp(34px, 4vw, 64px); line-height: 1.08; letter-spacing: -.04em; }
.section-sub { max-width: 660px; margin: 20px 0 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.filters { display: flex; flex-wrap: wrap; gap: 10px; }
.filter { padding: 10px 16px; border: 1px solid var(--line); border-radius: 999px; color: inherit; background: transparent; cursor: pointer; transition: .2s ease; }
.filter:hover, .filter.active { color: #fff; border-color: var(--orange); background: var(--orange); }
.case-card { cursor: pointer; }
.case-card[hidden] { display: none !important; }
.case-link { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 800; }
.case-link::after { content: "\2197"; transition: transform .2s ease; }
.case-card:hover .case-link::after { transform: translate(3px, -3px); }
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; }
.tag { padding: 6px 9px; border-radius: 999px; font-size: 11px; font-weight: 700; }
.site-foot { padding: 38px clamp(22px, 5vw, 84px); display: flex; justify-content: space-between; gap: 24px; color: rgba(255,255,255,.62); background: #17100b; font-size: 13px; }
.toast { position: fixed; left: 50%; bottom: 32px; z-index: 90; width: min(460px, calc(100% - 32px)); padding: 15px 18px; border-radius: 12px; color: #fff; background: #19130f; box-shadow: 0 18px 60px rgba(0,0,0,.28); text-align: center; opacity: 0; pointer-events: none; transform: translate(-50%, 18px); transition: .25s ease; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* Concept 01: executive proof wall */
.concept-01 { background: var(--cream); }
.c1-hero { padding: 65px clamp(22px, 6vw, 110px) 64px; background: var(--amber); border-bottom: 1px solid var(--ink); }
.c1-hero-grid { display: grid; grid-template-columns: minmax(0,1.4fr) minmax(300px,.6fr); gap: 70px; align-items: end; }
.c1-hero-grid > *, .c2-hero-line > *, .c2-hero-bottom > *, .c3-hero-foot > * { min-width: 0; }
.c1-hero h1 { max-width: 950px; margin: 0; font-size: clamp(52px, 7.2vw, 122px); line-height: 1.1; letter-spacing: -.065em; }
.c1-hero .lead { max-width: 510px; margin: 26px 0 0; font-size: 18px; line-height: 1.7; }
.proof-panel { width: 100%; padding: 26px; border: 2px solid var(--ink); border-radius: 22px; background: rgba(255,255,255,.28); }
.proof-panel strong { display: block; font-size: 68px; line-height: 1; }
.proof-panel span { font-size: 13px; font-weight: 700; }
.proof-mini { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; margin-top: 28px; }
.proof-mini div { padding-top: 14px; border-top: 1px solid rgba(39,27,18,.45); }
.proof-mini b { display: block; font-size: 24px; }
.proof-mini small { color: rgba(39,27,18,.7); }
.c1-trust { padding: 26px clamp(22px,6vw,110px); display: flex; align-items: center; gap: 28px; color: #fff; background: var(--ink); overflow: hidden; }
.c1-trust > span { flex: 0 0 auto; color: #ff9b42; font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.trust-logos { display: flex; align-items: center; gap: 14px; min-width: 0; overflow: hidden; }
.trust-logos .logo-mark { color: rgba(255,255,255,.72); }
.c1-main { padding: 0px clamp(22px,6vw,110px) 120px; }
.c1-intro { display: flex; justify-content: space-between; gap: 36px; align-items: end; }
.c1-intro > *, .featured-case > *, .case-item-head > * { min-width: 0; }
.c1-filter-bar { margin-top: 44px; padding: 16px 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.c1-filter-bar .filter { padding: 11px 17px; }
.c1-filter-bar .filter sup { margin-left: 4px; font-size: 9px; opacity: .65; }
.filter-hint { flex: 0 0 auto; color: var(--muted); font-size: 12px; }
.featured-case { margin-top: 36px; display: grid; grid-template-columns: .92fr 1.08fr; min-height: 480px; border: 2px solid var(--ink); border-radius: 26px; overflow: hidden; background: #fff; }
.featured-visual { padding: 45px; display: flex; flex-direction: column; justify-content: space-between; color: #fff; background: var(--ink); }
.featured-visual .logo-mark { color: #ff9b42; }
.featured-brand { display: flex; align-items: center; justify-content: space-between; gap: 20px; color: rgba(255,255,255,.5); font-size: 10px; font-weight: 800; letter-spacing: .13em; }
.featured-client { margin: 0 0 38px; color: rgba(255,255,255,.82); font-size: 18px; font-weight: 800; }
.featured-num { font-size: clamp(90px, 11vw, 180px); font-weight: 900; line-height: .75; letter-spacing: -.09em; color: var(--orange); }
.featured-copy { padding: clamp(34px,5vw,76px); display: flex; flex-direction: column; justify-content: center; }
.featured-copy h2 { margin: 18px 0 16px; font-size: clamp(30px,4vw,56px); line-height: 1.08; letter-spacing: -.035em; }
.featured-copy p { margin: 0 0 24px; color: var(--muted); line-height: 1.8; }
.featured-copy .tag { background: #fff0e2; color: #a83d0d; }
.featured-copy .proof-tag { color: #2e6b46; background: #eaf6ed; }
.featured-meta { margin: 4px 0 28px; padding: 19px 0; display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.featured-meta div { padding: 0 16px; border-right: 1px solid var(--line); }
.featured-meta div:first-child { padding-left: 0; }
.featured-meta div:last-child { border-right: 0; }
.featured-meta dt { color: var(--muted); font-size: 11px; }
.featured-meta dd { margin: 4px 0 0; font-size: 13px; font-weight: 800; }
.case-grid-01 { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin-top: 18px; }
.card-01 { min-height: 340px; padding: 28px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 20px; background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
.card-01:hover { transform: translateY(-5px); box-shadow: 0 20px 40px rgba(39,27,18,.11); }
.card-01 .card-top { display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.card-01 .sector { color: var(--muted); font-size: 12px; }
.card-01 .metric { margin: 42px 0 8px; color: var(--orange); font-size: 48px; font-weight: 900; letter-spacing: -.05em; }
.card-01 h3 { margin: 0 0 12px; font-size: 20px; }
.card-01 p { margin: 0; color: var(--muted); line-height: 1.65; font-size: 14px; }
.card-01 .case-link { margin-top: auto; padding-top: 26px; }
.case-library-head { margin-top: 90px; padding-bottom: 26px; display: flex; align-items: end; justify-content: space-between; gap: 28px; border-bottom: 2px solid var(--ink); }
.case-library-head .eyebrow { margin-bottom: 8px; color: var(--orange); }
.case-library-head h3 { margin: 0; font-size: clamp(32px,4vw,58px); line-height: 1; letter-spacing: -.045em; }
.case-library-head .result-num { color: var(--muted); font-size: 13px; font-weight: 800; }
.case-library-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); }
.case-item { min-height: 344px; padding: 24px; display: flex; flex-direction: column; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.46); transition: color .25s ease, background .25s ease; }
.case-item:nth-child(3n) { border-right: 0; }
.case-item:hover { color: #fff; background: var(--ink); box-shadow: 0 0 0 2px var(--orange); }
.case-item-head { display: grid; grid-template-columns: 72px minmax(0,1fr) auto; gap: 12px; align-items: center; }
.case-logo { width: 72px; height: 48px; display: grid; place-items: center; border-radius: 8px; color: #fff; background: #333; font-size: 10px; font-weight: 900; letter-spacing: .06em; text-align: center; }
.logo-Emsee { background: #831437; }
.logo-iGrowFit { background: #116434; }
.logo-long-Bridge { color: #201810; background: #00B8B8; }
.logo-AiPilot { background: #16735a; }
.logo-Edufirst { background: #F35C36; }
.logo-Emerge { color: #4b2a16; background: #ead7bf; }
.logo-QNWellness { background: #355961; }
.logo-reeman { color: #25150d; background: #ff8b25; }
.logo-SuperClean { color: #283008; background: #d8ed53; }
.logo-SQC { background: #4062a7; }
.logo-StarNgage { background: #b6414d; }
.case-item-head h3 { margin: 0 0 4px; font-size: 16px; line-height: 1.3; }
.case-item-head p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.45; }
.case-item:hover .case-item-head p { color: rgba(255,255,255,.6); }
.case-no { align-self: start; color: var(--muted); font: 700 11px/1 monospace; }
.case-result { margin-top: 20px; display: grid; grid-template-columns: 1.25fr .75fr; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.case-result > div { min-height: 86px; padding: 13px 14px; display: flex; flex-direction: column; justify-content: center; border-right: 1px solid var(--line); }
.case-result > div:first-child { padding-left: 0; }
.case-result > div:last-child { border-right: 0; }
.case-result strong { color: var(--orange); font-size: clamp(30px,3vw,43px); line-height: 1; letter-spacing: -.055em; }
.case-result b { font-size: 20px; }
.case-result span { margin-top: 5px; color: var(--muted); font-size: 10px; }
.case-item:hover .case-result { border-color: rgba(255,255,255,.18); }
.case-item:hover .case-result > div { border-color: rgba(255,255,255,.18); }
.case-item:hover .case-result span { color: rgba(255,255,255,.48); }
.case-quote { margin: 16px 0 0; padding-left: 12px; min-height: 64px; border-left: 2px solid var(--orange); color: #554c45; font-size: 12px; line-height: 1.6; overflow-wrap: anywhere; }
.case-quote span { display: block; margin-bottom: 2px; color: var(--orange); font-size: 10px; font-weight: 800; font-style: normal; }
.case-item:hover .case-quote { color: rgba(255,255,255,.82); }
.case-item-foot { margin-top: auto; padding-top: 15px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.proof-state { color: #38704d; font-size: 10px; font-weight: 700; }
.case-item:hover .proof-state { color: #8bd0a4; }
.case-item .case-link { font-size: 12px; white-space: nowrap; }
.case-item .case-link { pointer-events: none; }
.case-library-footer { margin-top: 40px; padding: 30px 34px; display: flex; align-items: center; justify-content: space-between; gap: 28px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.case-library-footer b, .case-library-footer span { display: block; }
.case-library-footer b { font-size: 18px; }
.case-library-footer div > span { margin-top: 5px; color: var(--muted); font-size: 13px; }
.library-more { min-width: 190px; padding: 14px 18px; display: flex; justify-content: space-between; gap: 18px; border-radius: 999px; color: #fff; background: var(--orange); font-size: 13px; font-weight: 800; }
.c1-cta { padding: 88px clamp(22px,6vw,110px); display: flex; align-items: center; justify-content: space-between; gap: 30px; color: #fff; background: var(--orange); }
.c1-cta h2 { max-width: 800px; margin: 0; font-size: clamp(36px,5vw,78px); line-height: 1; }
.outline-btn { padding: 15px 22px; border: 2px solid currentColor; border-radius: 999px; font-weight: 800; white-space: nowrap; }

/* Concept 02: evidence index */
.concept-02 { background: #f1f0ec; }
.concept-02 .site-head { color: var(--ink); background: #f1f0ec; border-bottom: 1px solid #b7b3aa; }
.concept-02 .site-head .brand img { filter: invert(1); }
.concept-02 .site-head .head-cta { border-color: #777; }
.c2-hero { padding: 80px clamp(22px,5vw,86px) 44px; border-bottom: 1px solid #b7b3aa; }
.c2-hero-line { display: grid; grid-template-columns: 160px 1fr; gap: 35px; }
.c2-index { padding-top: 8px; font-family: Georgia,serif; font-size: 18px; }
.c2-hero h1 { max-width: 1100px; margin: 0; font-family: Georgia,"Times New Roman",serif; font-size: clamp(50px,7.2vw,120px); font-weight: 400; line-height: .94; letter-spacing: -.055em; }
.c2-hero-bottom { margin-top: 64px; display: grid; grid-template-columns: 160px minmax(0,1fr) auto; gap: 35px; align-items: end; }
.c2-hero-bottom p { max-width: 620px; margin: 0; line-height: 1.75; }
.record-count { font-family: Georgia,serif; font-size: 54px; line-height: 1; }
.record-count small { display: block; margin-top: 8px; font-family: inherit; font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.c2-body { display: grid; grid-template-columns: 290px minmax(0,1fr); }
.c2-sidebar { padding: 48px 32px 80px clamp(22px,5vw,86px); border-right: 1px solid #b7b3aa; }
.c2-sidebar .filters { display: grid; gap: 0; }
.c2-sidebar .filter { padding: 14px 0; display: flex; justify-content: space-between; border: 0; border-bottom: 1px solid #cbc7be; border-radius: 0; text-align: left; }
.c2-sidebar .filter:hover, .c2-sidebar .filter.active { color: var(--orange); background: transparent; }
.c2-sidebar .note { margin-top: 38px; color: var(--muted); font-size: 12px; line-height: 1.65; }
.case-ledger { padding-bottom: 80px; }
.ledger-head, .ledger-row { display: grid; grid-template-columns: 70px 1.25fr .9fr .75fr 56px; gap: 20px; align-items: center; }
.ledger-head { padding: 18px 34px; border-bottom: 1px solid #b7b3aa; color: var(--muted); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }
.ledger-row { min-height: 152px; padding: 28px 34px; border-bottom: 1px solid #b7b3aa; transition: background .2s ease; }
.ledger-row:hover { background: #fff; }
.ledger-row .row-no { font-family: Georgia,serif; font-size: 19px; }
.client-cell { display: flex; gap: 18px; align-items: center; }
.client-cell h3 { margin: 0 0 7px; font-size: 20px; }
.client-cell p, .business-cell p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.client-cell .logo-mark { min-width: 74px; height: 50px; }
.metric-cell strong { display: block; color: var(--orange); font-family: Georgia,serif; font-size: 34px; font-weight: 400; }
.metric-cell small { color: var(--muted); }
.arrow-cell { width: 46px; height: 46px; display: grid; place-items: center; border: 1px solid #8b867d; border-radius: 50%; font-size: 18px; }
.ledger-row:hover .arrow-cell { color: #fff; border-color: var(--orange); background: var(--orange); }
.c2-proof { padding: 70px clamp(22px,5vw,86px); display: grid; grid-template-columns: 1fr repeat(3,.55fr); gap: 30px; color: #fff; background: #2a2926; }
.c2-proof h2 { margin: 0; font: 400 clamp(34px,4vw,62px)/1.05 Georgia,serif; }
.c2-proof .stat { padding-left: 20px; border-left: 1px solid rgba(255,255,255,.25); }
.c2-proof .stat b { display: block; color: #ff7a35; font: 400 44px/1 Georgia,serif; }
.c2-proof .stat span { font-size: 12px; color: rgba(255,255,255,.64); }

/* Concept 03: dark signal dashboard */
.concept-03 { --neon: #ff6a2a; --lime: #d6ff54; color: #f7f2ea; background: #0c0e10; }
.concept-03 .site-head { background: #0c0e10; border-bottom: 1px solid #2f3236; }
.concept-03 .site-head .head-cta { color: #111; border: 0; background: var(--lime); }
.c3-hero { position: relative; padding: 92px clamp(22px,5.5vw,100px) 70px; border-bottom: 1px solid #2f3236; overflow: hidden; }
.c3-hero::before { content: ""; position: absolute; width: 640px; height: 640px; right: -170px; top: -280px; border-radius: 50%; background: radial-gradient(circle, rgba(255,106,42,.35), transparent 66%); }
.c3-kicker { display: flex; gap: 10px; align-items: center; color: var(--lime); font: 700 12px/1 monospace; letter-spacing: .14em; }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 18px var(--lime); }
.c3-hero h1 { position: relative; max-width: 1050px; margin: 28px 0 0; font-size: clamp(54px,8vw,134px); line-height: .86; letter-spacing: -.07em; }
.c3-hero h1 em { color: var(--neon); font-style: normal; }
.c3-hero-foot { position: relative; margin-top: 65px; display: flex; justify-content: space-between; gap: 34px; align-items: end; }
.c3-hero-foot p { max-width: 600px; margin: 0; color: #a8adb3; font-size: 17px; line-height: 1.75; }
.c3-score { display: flex; gap: 34px; }
.c3-score div { min-width: 110px; padding-left: 16px; border-left: 1px solid #454a4f; }
.c3-score b { display: block; color: var(--lime); font-size: 32px; }
.c3-score span { color: #7f858c; font-size: 11px; }
.c3-toolbar { padding: 22px clamp(22px,5.5vw,100px); display: flex; align-items: center; justify-content: space-between; gap: 22px; border-bottom: 1px solid #2f3236; background: #111418; }
.c3-toolbar .filter { color: #aaaeb4; border-color: #393d42; }
.c3-toolbar .filter.active, .c3-toolbar .filter:hover { color: #111; border-color: var(--lime); background: var(--lime); }
.c3-toolbar .result-num { color: #7d8288; font-family: monospace; white-space: nowrap; }
.c3-main { padding: 40px clamp(22px,5.5vw,100px) 110px; }
.c3-feature { min-height: 470px; display: grid; grid-template-columns: 1.1fr .9fr; border: 1px solid #393d42; border-radius: 24px; overflow: hidden; background: #15181c; }
.c3-feature-copy { padding: clamp(34px,5vw,74px); }
.c3-feature-copy .logo-mark { color: var(--lime); }
.c3-feature-copy h2 { max-width: 690px; margin: 34px 0 20px; font-size: clamp(36px,4.6vw,72px); line-height: .98; letter-spacing: -.05em; }
.c3-feature-copy p { max-width: 590px; color: #9ba0a7; line-height: 1.75; }
.concept-03 .tag { color: #b8bdc2; border: 1px solid #34383d; }
.c3-feature-copy .case-link { margin-top: 38px; color: var(--lime); }
.signal-board { padding: 35px; display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; background: linear-gradient(145deg,#1f2429,#101216); }
.signal { min-height: 150px; padding: 20px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid #3a3f45; border-radius: 14px; background: rgba(10,12,14,.65); }
.signal:nth-child(1) { grid-column: span 2; }
.signal b { color: var(--neon); font-size: 48px; letter-spacing: -.05em; }
.signal span { color: #7f858c; font: 12px monospace; }
.signal .bars { height: 44px; display: flex; align-items: end; gap: 5px; }
.signal .bars i { width: 8%; background: var(--lime); opacity: .8; }
.case-grid-03 { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; margin-top: 14px; }
.card-03 { min-height: 320px; padding: 24px; display: flex; flex-direction: column; border: 1px solid #30343a; border-radius: 18px; background: #121519; transition: .2s ease; }
.card-03:nth-child(5n+1), .card-03:nth-child(5n+4) { grid-column: span 2; }
.card-03:hover { border-color: var(--neon); background: #171a1f; }
.card-03 .card-top { display: flex; justify-content: space-between; gap: 12px; color: #7f858c; font: 11px monospace; }
.card-03 .logo-mark { margin-top: 22px; color: #d9dde0; }
.card-03 .metric { margin: 35px 0 10px; color: var(--lime); font-size: 42px; font-weight: 900; letter-spacing: -.04em; }
.card-03 h3 { margin: 0 0 10px; font-size: 18px; }
.card-03 p { margin: 0; color: #848a91; font-size: 13px; line-height: 1.65; }
.card-03 .case-link { margin-top: auto; padding-top: 25px; color: var(--neon); }
.c3-closing { padding: 90px clamp(22px,5.5vw,100px); display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; color: #101214; background: var(--lime); }
.c3-closing h2 { max-width: 900px; margin: 0; font-size: clamp(38px,5.2vw,82px); line-height: .96; letter-spacing: -.05em; }
.c3-closing .outline-btn { color: #101214; }

@media (max-width: 1000px) {
  .site-head nav a:not(.head-cta) { display: none; }
  .c1-hero-grid, .featured-case, .c3-feature { grid-template-columns: 1fr; }
  .proof-panel { max-width: 560px; }
  .case-grid-01 { grid-template-columns: repeat(2,1fr); }
  .c1-filter-bar { align-items: flex-start; flex-direction: column; }
  .c1-filter-bar .filters { width: 100%; }
  .featured-visual { min-height: 390px; }
  .case-library-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .case-item:nth-child(3n) { border-right: 1px solid var(--line); }
  .case-item:nth-child(2n) { border-right: 0; }
  .c2-body { grid-template-columns: 1fr; }
  .c2-sidebar { padding: 24px; border-right: 0; border-bottom: 1px solid #b7b3aa; }
  .c2-sidebar .filters { display: flex; }
  .c2-sidebar .filter { gap: 4px; padding: 8px 12px; border: 1px solid #bbb7af; border-radius: 999px; }
  .ledger-head { display: none; }
  .ledger-row { grid-template-columns: 55px 1fr .65fr 46px; }
  .business-cell { display: none; }
  .c2-proof { grid-template-columns: 1fr repeat(3,1fr); }
  .c3-hero-foot { align-items: flex-start; flex-direction: column; }
  .case-grid-03 { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 680px) {
  .site-head { height: 66px; }
  .site-head .brand span { display: none; }
  .site-head .brand img { width: 48px; }
  .site-head nav { min-width: 0; overflow: hidden; }
  .site-head .head-cta { padding: 8px 11px; font-size: 12px; }
  .draft-note { display: none; }
  .c1-hero, .c2-hero, .c3-hero { padding-top: 58px; }
  .c1-intro, .c1-cta, .c3-toolbar, .c3-closing { align-items: flex-start; flex-direction: column; }
  .c1-main { padding-top: 70px; padding-bottom: 80px; }
  .c1-filter-bar .filter { padding: 9px 12px; font-size: 12px; }
  .featured-visual { min-height: 340px; padding: 28px; }
  .featured-brand { align-items: flex-start; }
  .featured-brand > span:last-child { max-width: 100px; text-align: right; }
  .featured-meta { grid-template-columns: 1fr; }
  .featured-meta div, .featured-meta div:first-child { padding: 11px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .featured-meta div:last-child { border-bottom: 0; }
  .case-library-head { margin-top: 65px; align-items: flex-start; flex-direction: column; }
  .case-library-grid { grid-template-columns: 1fr; }
  .case-item { min-height: 320px; padding: 22px 0; border-right: 0; }
  .case-item:nth-child(3n) { border-right: 0; }
  .case-item-head { grid-template-columns: 72px minmax(0,1fr) auto; gap: 13px; }
  .case-logo { width: 72px; height: 52px; font-size: 10px; }
  .case-item-head h3 { font-size: 17px; }
  .case-result { margin-top: 18px; }
  .case-result > div { min-height: 78px; }
  .case-item-foot { align-items: center; flex-direction: row; }
  .case-library-footer { padding: 26px; align-items: stretch; flex-direction: column; }
  .library-more { width: 100%; }
  .c3-toolbar .filters { width: 100%; }
  .case-grid-01, .case-grid-03 { grid-template-columns: 1fr; }
  .card-03:nth-child(n) { grid-column: span 1; }
  .c2-hero-line, .c2-hero-bottom { grid-template-columns: 1fr; }
  .c2-index { display: none; }
  .ledger-row { grid-template-columns: 1fr auto; gap: 18px; }
  .ledger-row .row-no, .ledger-row .metric-cell { display: none; }
  .client-cell { align-items: flex-start; }
  .client-cell .logo-mark { min-width: 64px; }
  .c2-proof { grid-template-columns: 1fr; }
  .c2-proof .stat { padding: 14px 0 0; border-left: 0; border-top: 1px solid rgba(255,255,255,.25); }
  .c3-score { flex-wrap: wrap; gap: 20px; }
  .signal-board { padding: 20px; }
  .site-foot { flex-direction: column; }
}