:root {
  --blue: #1267e8;
  --blue-deep: #164d9b;
  --cyan: #35d4e7;
  --ink: #111827;
  --muted: #5e6b80;
  --bg: #f4f8fe;
  --line: #e8eef8;
  --white: #ffffff;
  --success: #16a085;
  --warning: #e59d2a;
  --danger: #d85858;
  --max: 1200px;
  --radius: 14px;
  --shadow: 0 24px 70px rgba(22, 77, 155, 0.13);
  --sans: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { max-width: 100%; overflow-x: clip; scroll-behavior: smooth; scroll-padding-top: 84px; }
body { max-width: 100%; margin: 0; overflow-x: clip; color: var(--ink); background: var(--white); font: 15px/1.72 var(--sans); -webkit-font-smoothing: antialiased; }
body.nav-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.container { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }
.section { padding: 104px 0; }
.section.soft { background: var(--bg); }
.section.dark { color: var(--white); background: var(--blue-deep); }
.section.tight { padding-block: 72px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 15px; color: var(--blue); font-size: 12px; font-weight: 750; letter-spacing: .11em; }
.eyebrow::before { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); content: ""; box-shadow: 0 0 0 5px rgba(53, 212, 231, .14); }
.dark .eyebrow { color: #bceef6; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { letter-spacing: -.035em; }
h1 { max-width: 720px; margin-bottom: 24px; font-size: clamp(46px, 4vw, 56px); line-height: 1.12; }
h2 { margin-bottom: 18px; font-size: clamp(34px, 3.8vw, 50px); line-height: 1.2; }
h3 { margin-bottom: 12px; font-size: 21px; line-height: 1.35; }
.display-line { display: block; white-space: nowrap; }
.lead { max-width: 680px; color: var(--muted); font-size: 18px; line-height: 1.9; }
.dark .lead, .dark .section-head > p { color: #d5e3f7; }
.section-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .8fr); gap: 80px; align-items: end; margin-bottom: 48px; }
.section-head > p { max-width: 560px; margin-bottom: 5px; color: var(--muted); font-size: 16px; }
.section-head.compact { grid-template-columns: 1fr; gap: 0; max-width: 760px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn { display: inline-flex; min-height: 48px; padding: 0 22px; align-items: center; justify-content: center; border: 1px solid var(--blue); border-radius: 9px; color: #fff; background: var(--blue); font-weight: 700; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.btn:hover { transform: translateY(-2px); background: var(--blue-deep); border-color: var(--blue-deep); }
.btn.secondary { color: var(--blue); background: transparent; }
.btn.secondary:hover { color: var(--blue-deep); background: #edf5ff; border-color: #9fc3f7; }
.btn.light { color: var(--blue-deep); background: #fff; border-color: #fff; }
.text-link { color: var(--blue); font-weight: 700; }
.text-link::after { margin-left: 6px; content: "→"; }

.site-header { position: sticky; top: 0; z-index: 50; height: 76px; border-bottom: 1px solid rgba(232, 238, 248, .9); background: rgba(255, 255, 255, .94); backdrop-filter: blur(16px); }
.nav { height: 100%; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; }
.brand img { width: 34px; height: 34px; object-fit: contain; }
.brand small { color: var(--muted); font-size: 11px; font-weight: 650; letter-spacing: .06em; }
.nav-links { display: flex; align-items: stretch; gap: 25px; height: 100%; margin-left: auto; }
.nav-links a { position: relative; display: flex; align-items: center; color: #48556a; font-size: 13px; white-space: nowrap; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--blue); }
.nav-links a[aria-current="page"]::after { position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; background: var(--blue); content: ""; }
.nav-contact { color: var(--blue-deep); font-size: 13px; font-weight: 750; white-space: nowrap; }
.nav .btn { min-height: 40px; padding-inline: 16px; font-size: 13px; }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 0; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.menu-toggle span, .menu-toggle::before, .menu-toggle::after { display: block; width: 18px; height: 2px; margin: 4px auto; background: var(--ink); content: ""; transition: .2s; }

.hero { position: relative; overflow: hidden; padding: 90px 0 82px; background: linear-gradient(135deg, #fff 0%, #fff 54%, #f2f8ff 100%); }
.hero::after { position: absolute; top: -180px; right: -160px; width: 540px; height: 540px; border-radius: 50%; background: radial-gradient(circle, rgba(53, 212, 231, .12), rgba(18, 103, 232, 0) 70%); content: ""; pointer-events: none; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) minmax(540px, 1fr); gap: 48px; align-items: center; }
.hero-visual { position: relative; min-width: 0; }
.hero-copy .lead { max-width: 620px; margin-bottom: 32px; }
.hero-note { margin-top: 18px; color: var(--muted); font-size: 12px; }
.page-hero { padding: 80px 0 72px; background: linear-gradient(180deg, #f5f9ff 0%, #fff 100%); border-bottom: 1px solid var(--line); }
.page-hero .container { display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, .82fr); gap: 72px; align-items: center; }
.page-hero h1 { font-size: clamp(42px, 4.5vw, 58px); }

.app-window { position: relative; width: 100%; max-width: 100%; min-width: 0; overflow: hidden; border: 1px solid #d8e5f7; border-radius: 16px; background: #fff; box-shadow: var(--shadow); color: var(--ink); }
.app-window[data-preview] { cursor: zoom-in; }
.app-bar { display: flex; height: 48px; padding: 0 16px; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: #fbfdff; }
.app-brand { display: flex; align-items: center; gap: 8px; color: var(--blue-deep); font-size: 12px; font-weight: 800; }
.app-brand::before { width: 9px; height: 9px; border-radius: 3px; background: linear-gradient(135deg, var(--blue), var(--cyan)); content: ""; }
.app-tools { display: flex; gap: 6px; }
.app-tools i { display: block; width: 7px; height: 7px; border-radius: 50%; background: #dbe5f2; }
.app-layout { display: grid; min-width: 0; grid-template-columns: 118px minmax(0, 1fr); min-height: 408px; }
.app-side { padding: 18px 12px; color: #d9e7fa; background: #153f7a; font-size: 10px; }
.app-side b { display: block; margin: 0 6px 12px; color: #fff; font-size: 10px; letter-spacing: .08em; }
.app-side span { display: block; margin-bottom: 5px; padding: 7px 8px; border-radius: 6px; }
.app-side span.active { color: #fff; background: rgba(53, 212, 231, .2); }
.app-main { min-width: 0; padding: 18px; background: #f7faff; }
.app-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 13px; }
.app-head strong { font-size: 13px; }
.app-head small { color: var(--muted); font-size: 9px; }
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 10px; }
.stat { padding: 11px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.stat small { display: block; color: var(--muted); font-size: 8px; }
.stat b { display: block; margin-top: 3px; color: var(--blue-deep); font-size: 16px; }
.app-panels { display: grid; grid-template-columns: 1.15fr .85fr; gap: 10px; }
.app-panel { min-width: 0; padding: 12px; border: 1px solid var(--line); border-radius: 9px; background: #fff; }
.app-panel h4 { margin: 0 0 10px; font-size: 10px; }
.mini-table { width: 100%; table-layout: fixed; border-collapse: collapse; font-size: 8px; }
.mini-table th { padding: 6px; color: var(--muted); background: #f5f8fd; text-align: left; font-weight: 600; }
.mini-table td { overflow: hidden; padding: 7px 6px; border-bottom: 1px solid var(--line); white-space: nowrap; text-overflow: ellipsis; }
.badge { display: inline-flex; padding: 2px 6px; border-radius: 999px; color: var(--blue); background: #eaf3ff; font-size: 8px; font-weight: 700; }
.badge.green { color: #087c69; background: #e7f8f5; }
.badge.orange { color: #9b650d; background: #fff5df; }
.task { display: grid; grid-template-columns: 18px minmax(0, 1fr) auto; gap: 7px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 8px; }
.task i { display: grid; width: 18px; height: 18px; place-items: center; border-radius: 5px; color: var(--blue); background: #edf4ff; font-style: normal; }
.task small { color: var(--muted); }
.float-note { position: absolute; max-width: 210px; padding: 12px 14px; border: 1px solid #d8e6f9; border-radius: 10px; background: rgba(255, 255, 255, .97); box-shadow: 0 14px 35px rgba(22, 77, 155, .15); font-size: 10px; }
.float-note b { display: block; margin-bottom: 3px; color: var(--blue-deep); font-size: 11px; }
.float-note.one { right: -14px; bottom: 84px; }
.float-note.two { left: 132px; bottom: -22px; }
.preview-hint { position: absolute; top: 59px; right: 13px; padding: 5px 8px; border-radius: 6px; color: #fff; background: rgba(17, 24, 39, .72); font-size: 9px; }

.proof-bar { border-block: 1px solid var(--line); background: #fff; }
.proof-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.proof-item { padding: 28px 26px; border-left: 1px solid var(--line); }
.proof-item:last-child { border-right: 1px solid var(--line); }
.proof-item b { display: block; margin-bottom: 3px; color: var(--blue-deep); font-size: 16px; }
.proof-item span { color: var(--muted); font-size: 12px; }
.problem-grid, .role-grid, .scale-grid, .plan-grid { display: grid; gap: 16px; }
.problem-grid { grid-template-columns: repeat(3, 1fr); }
.role-grid { grid-template-columns: repeat(5, 1fr); }
.scale-grid { grid-template-columns: repeat(4, 1fr); }
.plan-grid { grid-template-columns: repeat(3, 1fr); }
.card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.card .number { display: inline-flex; width: 34px; height: 34px; align-items: center; justify-content: center; margin-bottom: 28px; border-radius: 9px; color: var(--blue); background: #eaf3ff; font-size: 12px; font-weight: 800; }
.card p { margin-bottom: 0; color: var(--muted); }
.card-list { margin: 20px 0 0; padding: 0; list-style: none; }
.card-list li { position: relative; padding: 10px 0 10px 19px; border-top: 1px solid var(--line); color: #445169; font-size: 13px; }
.card-list li::before { position: absolute; top: 18px; left: 1px; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); content: ""; }

.fact-chain { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); border: 1px solid #dce8f8; border-radius: 16px; background: #fff; overflow: hidden; }
.fact-chain::before { position: absolute; top: 50px; right: 7%; left: 7%; height: 2px; background: linear-gradient(90deg, var(--blue), var(--cyan)); content: ""; }
.fact-node { position: relative; min-width: 0; padding: 30px 18px 24px; border-right: 1px solid var(--line); }
.fact-node:last-child { border-right: 0; }
.fact-dot { position: relative; z-index: 1; display: grid; width: 40px; height: 40px; margin-bottom: 22px; place-items: center; border: 5px solid #fff; border-radius: 50%; color: #fff; background: var(--blue); box-shadow: 0 0 0 1px #cfe0f7; font-size: 10px; font-weight: 800; }
.fact-node h3 { min-height: 54px; font-size: 17px; }
.fact-meta { margin-top: 18px; padding-top: 15px; border-top: 1px solid var(--line); }
.fact-meta span { display: block; margin-bottom: 7px; color: var(--muted); font-size: 10px; }
.fact-meta b { display: block; color: #41506a; font-size: 11px; font-weight: 650; }

.scene-stack { display: grid; gap: 28px; }
.scene { display: grid; grid-template-columns: .82fr 1.18fr; min-height: 430px; overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.scene:nth-child(even) { grid-template-columns: 1.18fr .82fr; }
.scene:nth-child(even) .scene-copy { order: 2; }
.scene-copy { display: flex; padding: 44px; flex-direction: column; justify-content: center; }
.scene-copy p { color: var(--muted); }
.scene-copy ul { margin: 8px 0 24px; padding-left: 20px; color: #42516a; }
.scene-copy li { margin-bottom: 7px; }
.scene-visual { display: grid; padding: 34px; place-items: center; background: var(--bg); }
.scene-visual .app-window { width: 100%; }
.scene-visual .app-layout { grid-template-columns: 95px 1fr; min-height: 295px; }

.role { padding: 25px 22px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.role span { display: grid; width: 38px; height: 38px; margin-bottom: 32px; place-items: center; border-radius: 10px; color: var(--blue); background: #edf5ff; font-weight: 800; }
.role h3 { font-size: 17px; }
.role p { color: var(--muted); font-size: 13px; }
.role small { display: block; padding-top: 13px; border-top: 1px solid var(--line); color: var(--blue-deep); font-weight: 650; }
.scale { position: relative; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.scale::before { position: absolute; top: 0; right: 28px; left: 28px; height: 3px; border-radius: 0 0 3px 3px; background: linear-gradient(90deg, var(--blue), var(--cyan)); content: ""; }
.scale p { color: var(--muted); }

.delivery-steps { display: grid; grid-template-columns: repeat(5, 1fr); border: 1px solid rgba(255, 255, 255, .22); border-radius: 16px; overflow: hidden; }
.delivery-step { min-height: 260px; padding: 28px 24px; border-right: 1px solid rgba(255, 255, 255, .16); }
.delivery-step:last-child { border-right: 0; }
.delivery-step .number { color: #89ecf6; font-weight: 800; }
.delivery-step h3 { margin-top: 44px; font-size: 17px; }
.delivery-step p { color: #c9d9ed; font-size: 12px; }
.delivery-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 70px; align-items: center; }
.delivery-photo { overflow: hidden; border-radius: 16px; }
.delivery-photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.check-list { display: grid; gap: 10px; margin: 28px 0; }
.check { display: grid; grid-template-columns: 30px 1fr; gap: 10px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.check b { color: var(--blue); }

.plan { display: flex; min-height: 450px; padding: 30px; flex-direction: column; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.plan.featured { border-color: #8bb9f7; box-shadow: 0 18px 50px rgba(18, 103, 232, .11); }
.plan-tag { align-self: flex-start; padding: 4px 9px; border-radius: 999px; color: var(--blue); background: #eaf3ff; font-size: 10px; font-weight: 750; }
.plan h3 { margin-top: 20px; font-size: 24px; }
.plan > p { color: var(--muted); }
.plan .card-list { margin-bottom: 28px; flex: 1; }
.plan .btn { width: 100%; }

.contact-block { display: grid; grid-template-columns: .86fr 1.14fr; overflow: hidden; border: 1px solid #dce8f8; border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
.contact-copy { padding: 44px; color: #fff; background: var(--blue-deep); }
.contact-copy h2 { font-size: 38px; }
.contact-copy p { color: #d5e3f7; }
.contact-method { margin-top: 36px; padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, .2); }
.contact-method a { display: block; margin-top: 5px; font-size: 23px; font-weight: 800; }
.consult-form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding: 42px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { color: #445169; font-size: 12px; font-weight: 700; }
.field input, .field select { width: 100%; height: 48px; min-height: 48px; padding: 0 14px; border: 1px solid #d9e4f2; border-radius: 8px; color: var(--ink); background: #fbfdff; outline: none; }
.field textarea { width: 100%; min-height: 96px; padding: 12px 14px; border: 1px solid #d9e4f2; border-radius: 8px; color: var(--ink); background: #fbfdff; outline: none; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(18, 103, 232, .09); }
.form-actions { grid-column: 1 / -1; display: flex; gap: 12px; align-items: center; }
.form-status { color: var(--muted); font-size: 12px; }

.feature-table { width: 100%; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; border-collapse: separate; border-spacing: 0; background: #fff; }
.feature-table th, .feature-table td { padding: 17px 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.feature-table th { color: var(--blue-deep); background: #eef5ff; font-size: 13px; }
.feature-table td { color: #4d5b71; font-size: 13px; }
.feature-table tr:last-child td { border-bottom: 0; }
.feature-table th:last-child, .feature-table td:last-child { border-right: 0; }
.detail-list { display: grid; gap: 18px; }
.detail-row { display: grid; grid-template-columns: 68px 220px 1fr; gap: 20px; align-items: start; padding: 24px 0; border-top: 1px solid var(--line); }
.detail-row .number { color: var(--blue); font-weight: 800; }
.detail-row h3 { font-size: 19px; }
.detail-row p { margin: 0; color: var(--muted); }

.article-hero { padding: 78px 0 58px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #f5f9ff 0%, #fff 100%); }
.article-hero .container { max-width: 900px; }
.article-hero h1 { max-width: 860px; font-size: clamp(40px, 5vw, 58px); }
.article-meta { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 24px; color: var(--muted); font-size: 12px; }
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-meta span::before { width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); content: ""; }
.article-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.article-card { display: flex; min-height: 290px; padding: 32px; flex-direction: column; border: 1px solid var(--line); border-radius: 16px; background: #fff; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.article-card:hover { transform: translateY(-3px); border-color: #bdd6f7; box-shadow: 0 18px 45px rgba(22, 77, 155, .1); }
.article-card .article-tag { align-self: flex-start; margin-bottom: 36px; padding: 4px 9px; border-radius: 999px; color: var(--blue); background: #eaf3ff; font-size: 10px; font-weight: 750; }
.article-card h2 { margin-bottom: 14px; font-size: 25px; line-height: 1.35; }
.article-card p { color: var(--muted); }
.article-card .article-meta { margin-top: auto; padding-top: 24px; border-top: 1px solid var(--line); }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) 260px; gap: 72px; align-items: start; }
.article-body { color: #354258; font-size: 17px; line-height: 2; }
.article-body > p:first-child { color: #26364e; font-size: 20px; line-height: 1.85; }
.article-body h2 { margin: 58px 0 20px; color: var(--ink); font-size: 32px; line-height: 1.35; }
.article-body h3 { margin: 34px 0 12px; color: var(--ink); font-size: 22px; }
.article-body ul, .article-body ol { margin: 18px 0 28px; padding-left: 25px; }
.article-body li { margin-bottom: 9px; }
.article-callout { margin: 34px 0; padding: 24px 26px; border-left: 4px solid var(--blue); border-radius: 0 12px 12px 0; background: var(--bg); }
.article-callout strong { display: block; margin-bottom: 6px; color: var(--blue-deep); }
.article-aside { position: sticky; top: 104px; padding: 24px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.article-aside h3 { font-size: 16px; }
.article-aside a { display: block; padding: 11px 0; border-top: 1px solid var(--line); color: #4c5b72; font-size: 12px; }
.article-aside a:hover { color: var(--blue); }
.article-cta { margin-top: 64px; padding: 34px; border-radius: 16px; color: #fff; background: var(--blue-deep); }
.article-cta h2 { margin: 0 0 10px; color: #fff; font-size: 28px; }
.article-cta p { margin-bottom: 22px; color: #d5e3f7; }

.site-footer { padding: 54px 0 34px; color: #c6d4e7; background: #103d7d; }
.footer-main { display: grid; grid-template-columns: 1fr 1.4fr .8fr; gap: 70px; padding-bottom: 40px; }
.footer-brand { display: flex; align-items: center; gap: 12px; color: #fff; font-weight: 800; }
.footer-brand img { width: 36px; height: 36px; }
.footer-copy { margin-top: 15px; color: #abc0dc; font-size: 12px; }
.footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 22px; }
.footer-links a:hover { color: #fff; }
.footer-contact b { display: block; color: #fff; font-size: 20px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, .16); color: #9fb5d2; font-size: 11px; }

.preview-dialog { width: min(1080px, calc(100% - 40px)); padding: 0; border: 0; border-radius: 16px; background: transparent; }
.preview-dialog::backdrop { background: rgba(8, 26, 53, .78); backdrop-filter: blur(6px); }
.preview-dialog .dialog-body { position: relative; padding: 20px; border-radius: 16px; background: #f4f8fe; }
.preview-dialog .dialog-body > .app-window { cursor: default; }
.dialog-close { position: absolute; z-index: 2; top: 8px; right: 8px; width: 34px; height: 34px; border: 0; border-radius: 50%; color: #fff; background: var(--blue-deep); }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .28s ease, transform .28s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 1080px) {
  .nav-links { gap: 16px; }
  .nav-contact { display: none; }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .page-hero .container { grid-template-columns: 1fr 1fr; gap: 44px; }
  .fact-chain { grid-template-columns: repeat(3, 1fr); }
  .fact-chain::before { display: none; }
  .fact-node:nth-child(3) { border-right: 0; }
  .fact-node:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
  .role-grid { grid-template-columns: repeat(3, 1fr); }
  .scale-grid { grid-template-columns: repeat(2, 1fr); }
  .delivery-steps { grid-template-columns: repeat(3, 1fr); }
  .delivery-step { border-bottom: 1px solid rgba(255, 255, 255, .16); }
}

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 680px; }
}

@media (max-width: 860px) {
  .section { padding-block: 82px; }
  .nav { gap: 12px; }
  .menu-toggle { display: block; margin-left: auto; }
  .nav-links { position: fixed; top: 76px; right: 0; left: 0; display: none; height: auto; padding: 14px 24px 24px; flex-direction: column; align-items: stretch; gap: 0; border-bottom: 1px solid var(--line); background: #fff; box-shadow: 0 20px 40px rgba(22, 77, 155, .12); }
  .nav-open .nav-links { display: flex; }
  .nav-links a { min-height: 45px; border-bottom: 1px solid var(--line); }
  .nav-links a[aria-current="page"]::after { display: none; }
  .nav .btn { order: 2; }
  .menu-toggle { order: 3; }
  .hero { padding-top: 68px; }
  .hero-grid, .page-hero .container { grid-template-columns: 1fr; }
  .hero-visual { max-width: 680px; }
  .section-head { grid-template-columns: 1fr; gap: 12px; }
  .problem-grid, .plan-grid { grid-template-columns: 1fr; }
  .scene, .scene:nth-child(even) { grid-template-columns: 1fr; }
  .scene:nth-child(even) .scene-copy { order: 0; }
  .role-grid { grid-template-columns: repeat(2, 1fr); }
  .delivery-grid { grid-template-columns: 1fr; }
  .contact-block { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-main > :first-child { grid-column: 1 / -1; }
  .article-layout { grid-template-columns: 1fr; gap: 42px; }
  .article-aside { position: static; }
}

@media (max-width: 620px) {
  .container { width: min(var(--max), calc(100% - 32px)); }
  .section { padding-block: 68px; }
  .site-header { height: 68px; }
  .brand span { display: none; }
  .brand small { display: none; }
  .nav .btn { display: inline-flex; min-height: 38px; padding-inline: 11px; font-size: 12px; }
  .nav-links { top: 68px; }
  h1 { font-size: clamp(32px, 9vw, 36px); }
  .page-hero h1 { font-size: 34px; }
  h2 { font-size: clamp(29px, 8.8vw, 36px); }
  .display-line { white-space: normal; }
  h1 .display-line { white-space: nowrap; }
  .lead { font-size: 16px; }
  .hero, .page-hero { padding: 54px 0 58px; }
  .hero-grid, .page-hero .container { gap: 42px; }
  .hero-grid > *, .page-hero .container > *, .scene > *, .scene-visual { min-width: 0; }
  .hero .app-window, .page-hero .app-window { contain: inline-size layout paint; }
  .app-layout { grid-template-columns: 76px 1fr; min-height: 345px; }
  .app-side { padding-inline: 7px; }
  .app-main { padding: 10px; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .stat:last-child { display: none; }
  .app-panels { grid-template-columns: 1fr; }
  .app-panels .app-panel:last-child { display: none; }
  .float-note { display: none; }
  .proof-grid { grid-template-columns: 1fr 1fr; }
  .proof-item:nth-child(2) { border-right: 1px solid var(--line); }
  .proof-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .proof-item { padding: 20px 17px; }
  .fact-chain { grid-template-columns: 1fr; }
  .fact-node, .fact-node:nth-child(3) { display: grid; grid-template-columns: 44px 1fr; gap: 0 14px; border-right: 0; border-bottom: 1px solid var(--line); }
  .fact-node:last-child { border-bottom: 0; }
  .fact-dot { grid-row: 1 / 3; }
  .fact-node h3 { min-height: 0; }
  .fact-meta { grid-column: 2; }
  .scene-copy, .scene-visual { padding: 26px 22px; }
  .role-grid, .scale-grid, .delivery-steps { grid-template-columns: 1fr; }
  .delivery-step { min-height: 0; border-right: 0; }
  .delivery-step h3 { margin-top: 24px; }
  .consult-form { grid-template-columns: 1fr; padding: 28px 22px; }
  .contact-copy { padding: 32px 24px; }
  .field.full, .form-actions { grid-column: auto; }
  .form-actions { align-items: stretch; flex-direction: column; }
  .form-actions .btn { width: 100%; }
  .feature-table { display: block; overflow-x: auto; }
  .detail-row { grid-template-columns: 42px 1fr; }
  .detail-row p { grid-column: 2; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .footer-main > :first-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
  .article-list { grid-template-columns: 1fr; }
  .article-card { min-height: 0; padding: 26px 22px; }
  .article-card .article-tag { margin-bottom: 24px; }
  .article-hero { padding: 52px 0 44px; }
  .article-hero h1 { font-size: 34px; }
  .article-body { font-size: 16px; }
  .article-body > p:first-child { font-size: 18px; }
  .article-body h2 { margin-top: 44px; font-size: 27px; }
  .article-cta { padding: 28px 22px; }
}

@media (max-width: 360px) {
  .brand span { display: none; }
  .nav { gap: 8px; }
  .nav .btn { margin-left: auto; }
  h1 { font-size: 30px; }
  h1 .display-line { white-space: normal; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}