:root {
  --ink: #102936;
  --ink-2: #1e3d48;
  --red: #b6382c;
  --red-dark: #8f2c24;
  --green: #71867d;
  --paper: #ffffff;
  --mist: #f3f5f4;
  --line: #d7ddda;
  --muted: #68777b;
  --shadow: 0 18px 46px rgba(16, 41, 54, .12);
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", sans-serif; line-height: 1.75; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; letter-spacing: 0; }
button, a { -webkit-tap-highlight-color: transparent; }

.site-header { position: sticky; top: 0; z-index: 50; height: 76px; padding: 0 max(28px, calc((100vw - var(--max)) / 2)); display: flex; align-items: center; gap: 24px; border-bottom: 1px solid rgba(16,41,54,.1); background: rgba(255,255,255,.96); backdrop-filter: blur(14px); }
.brand { display: flex; align-items: center; gap: 11px; min-width: 245px; }
.brand img { width: 46px; height: 46px; object-fit: contain; }
.brand span { display: flex; flex-direction: column; line-height: 1.25; }
.brand strong { font-size: 15px; font-weight: 750; }
.brand small { color: var(--muted); font-family: Arial, sans-serif; font-size: 9px; text-transform: uppercase; }
.main-nav { display: flex; align-items: center; justify-content: center; gap: 4px; flex: 1; }
.main-nav a { position: relative; padding: 25px 10px 22px; font-size: 13px; white-space: nowrap; }
.main-nav a::after { content: ""; position: absolute; left: 10px; right: 10px; bottom: 0; height: 3px; background: var(--red); transform: scaleX(0); transition: transform .2s ease; }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }
.header-action { padding: 9px 15px; border: 1px solid var(--ink); font-size: 13px; }
.header-action:hover { background: var(--ink); color: white; }
.nav-toggle { display: none; border: 0; background: none; color: var(--ink); }

.page[hidden] { display: none !important; }
.hero { position: relative; min-height: calc(100vh - 76px); max-height: 840px; background: url("/static/hero-factoring-ai.png") center / cover no-repeat; display: flex; align-items: center; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.88) 34%, rgba(255,255,255,.52) 54%, rgba(255,255,255,0) 72%); pointer-events: none; }
.hero-inner { position: relative; z-index: 1; width: min(var(--max), calc(100% - 56px)); margin: 0 auto; padding-bottom: 42px; }
.hero h1 { width: min(790px, 62vw); margin: 0 0 26px; font-family: "STSong", "SimSun", serif; font-size: clamp(36px, 4.5vw, 64px); line-height: 1.18; font-weight: 700; letter-spacing: 0; }
.hero p { width: min(690px, 57vw); margin: 0 0 34px; color: #2c454e; font-size: 18px; line-height: 1.9; }
.hero-actions { display: flex; gap: 12px; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid transparent; border-radius: 2px; font-size: 14px; font-weight: 650; cursor: pointer; transition: transform .2s ease, background .2s ease, color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--red); color: white; }
.button-primary:hover { background: var(--red-dark); }
.button-secondary { border-color: var(--ink); background: rgba(255,255,255,.82); color: var(--ink); }
.button-light { border-color: white; color: white; }

.section { padding: 96px max(28px, calc((100vw - var(--max)) / 2)); }
.intro-band { padding-top: 72px; padding-bottom: 72px; background: var(--ink); color: white; }
.section-grid { display: grid; gap: 64px; }
.intro-grid { grid-template-columns: .95fr 1.05fr; align-items: center; }
.intro-grid h2 { margin: 0; font-family: "STSong", "SimSun", serif; font-size: 34px; line-height: 1.35; }
.intro-grid p { margin: 0; color: #d7e1df; font-size: 17px; }
.section-heading { display: grid; grid-template-columns: 180px 1fr; align-items: start; margin-bottom: 46px; }
.section-heading span { color: var(--red); font-size: 14px; font-weight: 750; }
.section-heading h2 { margin: 0; font-family: "STSong", "SimSun", serif; font-size: 38px; line-height: 1.3; }
.stages-heading span { color: var(--red); }
.stages-heading h2 { color: var(--ink); }

.value-section { background: var(--mist); }
.value-rail { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: white; }
.value-rail article { min-height: 265px; padding: 32px 26px; border-right: 1px solid var(--line); }
.value-rail article:last-child { border-right: 0; }
.value-rail b { color: var(--red); font-family: Arial, sans-serif; font-size: 13px; }
.value-rail h3 { margin: 52px 0 12px; font-size: 24px; }
.value-rail p { margin: 0; color: var(--muted); font-size: 14px; }
.value-rail .value-final { background: var(--red); color: white; }
.value-rail .value-final b, .value-rail .value-final p { color: white; }

.stages-section { background: white; }
.stages { border-top: 1px solid var(--line); }
.stages article { display: grid; grid-template-columns: 130px 1fr; gap: 36px; padding: 44px 0; border-bottom: 1px solid var(--line); color: var(--ink); }
.stage-index { color: var(--red); font-family: "STKaiti", "KaiTi", serif; font-size: 52px; }
.stages h3 { margin: 0 0 10px; font-size: 24px; }
.stages p { margin: 0 0 14px; color: var(--muted); }
.stages strong { color: var(--red-dark); font-size: 14px; }

.capability-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px; }
.capability-list article { padding-top: 24px; border-top: 3px solid var(--green); }
.capability-list h3 { margin: 0 0 14px; font-size: 26px; }
.capability-list p { margin: 0; color: var(--muted); }

.home-method { background: var(--mist); scroll-margin-top: 76px; }
.method-system { display: grid; grid-template-columns: .92fr 1.08fr; gap: 70px; align-items: start; }
.architecture-stack.compact-stack { margin: 0; }
.architecture-stack.compact-stack article { min-height: 80px; margin-top: 8px; padding: 17px 22px; grid-template-columns: 42px 110px 1fr; box-shadow: none; }
.delivery-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; column-gap: 38px; }
.delivery-steps li { display: grid; grid-template-columns: 36px 1fr; gap: 10px; padding: 18px 0; border-top: 1px solid var(--line); }
.delivery-steps li:nth-last-child(-n+2) { border-bottom: 1px solid var(--line); }
.delivery-steps b { color: var(--red); font: 700 12px Arial, sans-serif; }
.delivery-steps h3 { margin: 0 0 4px; font-size: 17px; }
.delivery-steps p { margin: 0; color: var(--muted); font-size: 13px; }
.governance-band { display: flex; align-items: center; justify-content: space-between; gap: 36px; background: var(--red); color: white; padding-top: 64px; padding-bottom: 64px; }
.governance-band h2 { margin: 0 0 6px; font: 700 32px/1.3 "STSong", "SimSun", serif; }
.governance-band p { margin: 0; color: #ffe4df; }

.inner-hero { position: relative; min-height: 390px; padding: 92px max(28px, calc((100vw - var(--max)) / 2)); display: flex; align-items: end; overflow: hidden; background-color: var(--ink); background-position: center; background-size: cover; color: white; }
.inner-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6,28,37,.94) 0%, rgba(6,28,37,.76) 40%, rgba(6,28,37,.26) 72%, rgba(6,28,37,.08) 100%); }
.inner-hero div { position: relative; z-index: 1; max-width: 820px; }
.inner-hero h1 { margin: 0 0 16px; font: 700 clamp(42px, 5vw, 66px)/1.2 "STSong", "SimSun", serif; }
.inner-hero p { margin: 0; max-width: 720px; color: #e3ece9; font-size: 18px; text-shadow: 0 1px 12px rgba(0,0,0,.3); }
.trial-hero { background-image: url("/static/inner-hero-trial.webp"); }
.guide-hero { background-image: url("/static/inner-hero-guide.webp"); }
.services-hero { background-image: url("/static/inner-hero-services.webp"); }
.cooperation-hero { background-image: url("/static/inner-hero-method.webp"); }
.about-hero { background-image: url("/static/inner-hero-about.webp"); }

.agent-list { padding-top: 48px; padding-bottom: 48px; }
.agent-row { display: grid; grid-template-columns: 110px 1fr 120px; gap: 34px; align-items: center; padding: 34px 0; border-bottom: 1px solid var(--line); }
.agent-row img { width: 96px; height: 96px; object-fit: contain; }
.agent-row h2 { margin: 0 0 8px; font-size: 23px; }
.agent-row p { margin: 0; color: var(--muted); }
.agent-row ul { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 12px 0 0; padding: 0; list-style: none; color: var(--ink-2); font-size: 13px; }
.agent-row li::before { content: "—"; margin-right: 6px; color: var(--red); }
.agent-trial-link { justify-self: end; padding: 0 0 3px; border: 0; border-bottom: 1px solid var(--red); background: transparent; color: var(--red); font-weight: 700; cursor: pointer; }
.agent-trial-link:hover { color: var(--red-dark); border-bottom-color: var(--red-dark); }
.engine-band { display: flex; align-items: center; justify-content: space-between; gap: 40px; background: var(--mist); }
.engine-band h2 { margin: 0 0 8px; }
.engine-band p { margin: 0; color: var(--muted); }
.engine-band span { padding: 7px 12px; border: 1px solid var(--green); color: var(--ink-2); font-size: 13px; white-space: nowrap; }

.split-lead { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.split-lead h2 { margin: 0; font: 700 34px/1.4 "STSong", "SimSun", serif; }
.split-lead p { margin: 0; color: var(--muted); font-size: 17px; }
.security-feature { position: relative; display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; margin: 64px max(28px, calc((100vw - var(--max)) / 2)) 0; padding: 78px clamp(34px, 4vw, 68px); background: var(--ink); color: white; overflow: hidden; }
.security-feature::after { content: "01"; position: absolute; right: 3%; top: -55px; color: rgba(255,255,255,.035); font: 700 260px/1 Arial, sans-serif; pointer-events: none; }
.security-head, .security-route, .security-close { position: relative; z-index: 1; }
.security-head span { color: #ff8d82; font-size: 14px; font-weight: 750; line-height: 1.8; }
.security-head span strong { color: #fff; font-size: 19px; }
.security-head h2 { margin: 18px 0 22px; font: 700 39px/1.38 "STSong", "SimSun", serif; }
.security-head > p { margin: 0; max-width: 510px; color: #d7e2df; font-size: 17px; }
.security-route { border-top: 1px solid rgba(255,255,255,.2); }
.security-route article { display: grid; grid-template-columns: 46px 1fr; gap: 14px; padding: 19px 0; border-bottom: 1px solid rgba(255,255,255,.2); }
.security-route b { padding-top: 4px; color: #ff8d82; font: 700 12px Arial, sans-serif; }
.security-route h3 { margin: 0 0 4px; font-size: 18px; }
.security-route p { margin: 0; color: #bfcfcb; font-size: 14px; }
.security-close { grid-column: 1 / -1; display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; padding-top: 26px; border-top: 1px solid rgba(255,255,255,.28); }
.security-close strong { color: #ff8d82; font-size: 19px; }
.security-close p { margin: 0; color: white; font-size: 17px; }
.faq-list { padding-top: 58px; }
.faq-list details { border-top: 1px solid var(--line); transition: background-color .2s ease; }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list details[open] { background: #f7f9f8; }
.faq-list summary { display: grid; grid-template-columns: 112px 1fr 34px; gap: 24px; align-items: center; min-height: 94px; padding: 24px 28px; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: var(--red); font: 400 28px/1 Arial, sans-serif; text-align: right; }
.faq-list details[open] summary::after { content: "−"; }
.faq-index { color: var(--red); font-size: 13px; font-weight: 750; }
.faq-question { color: var(--ink); font: 700 23px/1.45 "STSong", "SimSun", serif; }
.faq-answer { padding: 0 74px 32px 164px; }
.faq-answer strong { display: block; margin-bottom: 8px; color: var(--ink); font-size: 16px; }
.faq-answer p { max-width: 900px; margin: 0; color: var(--muted); }
.faq-answer-wide { padding-bottom: 42px; }
.faq-answer-wide > p { max-width: 1080px; }
.faq-answer-wide .faq-lead { margin-bottom: 24px; }
.faq-reasons { display: grid; grid-template-columns: 1fr 1fr; gap: 0 34px; max-width: 1080px; margin: 0; padding: 0; list-style: none; }
.faq-reasons li { display: grid; grid-template-columns: 128px 1fr; gap: 18px; padding: 20px 0; border-top: 1px solid var(--line); }
.faq-reasons li:last-child { grid-column: 1 / -1; }
.faq-reasons b { color: var(--ink); font-size: 14px; }
.faq-reasons span { color: var(--muted); font-size: 14px; line-height: 1.8; }
.faq-answer-wide .faq-conclusion { margin-top: 24px; padding: 18px 20px; border-left: 3px solid var(--red); background: white; color: var(--ink-2); }
.faq-list .deployment-answer { margin-bottom: 34px; border-top: 3px solid var(--red); border-bottom: 1px solid var(--line); }
.deployment-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 2px 0 24px; background: var(--line); }
.deployment-grid article { min-height: 250px; padding: 26px; background: var(--mist); }
.deployment-grid article > span { display: block; margin-bottom: 38px; color: var(--muted); font: 700 12px Arial, sans-serif; }
.deployment-grid b { color: var(--red); font-size: 17px; }
.deployment-grid p { margin: 12px 0 0; color: var(--ink-2); font-size: 14px; }
.faq-list .deployment-note { max-width: none; margin: 0 28px 28px; padding-left: 18px; border-left: 3px solid var(--green); color: var(--muted); }
.three-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); padding-top: 0; padding-bottom: 0; }
.three-values article { min-height: 260px; padding: 48px; background: white; }
.three-values b { color: var(--red); font: 700 13px Arial, sans-serif; }
.three-values h2 { margin: 70px 0 8px; }
.three-values p { margin: 0; color: var(--muted); }

.characteristics { background: var(--mist); }
.criteria-layout { display: grid; grid-template-columns: 280px 1fr; gap: 70px; align-items: stretch; }
.criteria-summary { min-height: 310px; padding: 34px; display: flex; flex-direction: column; justify-content: space-between; background: var(--ink); color: white; }
.criteria-summary strong { color: #f18c80; font: 400 112px/1 Arial, sans-serif; }
.criteria-summary p { margin: 0; max-width: 190px; color: #d7e2df; font-size: 16px; line-height: 1.75; }
.char-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); column-gap: 52px; }
.char-grid li { min-height: 103px; display: grid; grid-template-columns: 42px 1fr; gap: 14px; align-items: start; padding: 18px 0; border-top: 1px solid var(--line); }
.char-grid li:nth-last-child(-n+2) { border-bottom: 1px solid var(--line); }
.char-grid b { padding-top: 4px; color: var(--red); font: 700 12px/1.4 Arial, sans-serif; }
.char-grid h3 { margin: 0 0 3px; font-size: 20px; line-height: 1.4; }
.char-grid p { margin: 0; color: var(--muted); font-size: 14px; }
.scenario-table { background: white; }
.scenario-table .section-heading { margin-bottom: 20px; }
.scenario-legend { display: flex; justify-content: flex-end; gap: 24px; margin-bottom: 28px; color: var(--muted); font-size: 12px; }
.scenario-legend span, .status { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.scenario-legend span::before, .status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.scenario-legend .open, .status.open { color: var(--red); }
.scenario-legend .base, .status.base { color: #287471; }
.scenario-legend .plan, .status.plan { color: #7c878a; }
.scenario-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.scenario-row { position: relative; min-height: 158px; display: grid; grid-template-columns: 54px 1fr; gap: 12px; align-content: start; padding: 28px 30px; border: 1px solid var(--line); border-top: 3px solid var(--red); border-radius: 4px; background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
.scenario-row:hover { transform: translateY(-3px); box-shadow: 0 14px 32px rgba(16,41,54,.09); }
.scenario-row.state-base { border-top-color: #287471; background: #f5f9f8; }
.scenario-row.state-plan { border-top-color: #a3acae; background: #f7f8f8; }
.scenario-row > b { color: var(--red); font: 400 30px/1 Arial, sans-serif; }
.scenario-row.state-base > b { color: #287471; }
.scenario-row.state-plan > b { color: #8b9597; }
.scenario-row h3, .scenario-row p { margin: 0; }
.scenario-row h3 { padding-right: 100px; font-size: 20px; line-height: 1.45; }
.scenario-row p { margin-top: 9px; color: var(--muted); font-size: 14px; }
.status { position: absolute; top: 31px; right: 28px; font-size: 12px; }
.future-section { background: var(--mist); }
.future-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.future-grid .scenario-row { min-height: 210px; background: white; }
.cooperation-characteristics { background: var(--mist); }

.architecture-stack { max-width: 950px; margin: 0 auto; }
.architecture-stack article { display: grid; grid-template-columns: 70px 180px 1fr; align-items: center; padding: 22px 30px; margin-top: 10px; background: white; border-left: 5px solid var(--green); box-shadow: 0 8px 26px rgba(16,41,54,.06); }
.architecture-stack article:first-child { border-left-color: var(--red); }
.architecture-stack b { color: var(--red); font: 700 13px Arial, sans-serif; }
.architecture-stack h3, .architecture-stack p { margin: 0; }
.architecture-stack p { color: var(--muted); }
.service-list { padding-top: 40px; }
.service-list article { display: grid; grid-template-columns: 90px 1fr; padding: 42px 0; border-bottom: 1px solid var(--line); }
.service-list b { color: var(--red); font: 700 14px Arial, sans-serif; }
.service-list h2 { margin: 0 0 8px; }
.service-list p { max-width: 820px; margin: 0; color: var(--muted); }

.cooperation-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: end; }
.cooperation-intro span, .contact-section > div > span { color: var(--red); font-size: 13px; font-weight: 750; }
.cooperation-intro h2 { max-width: 620px; margin: 12px 0 0; font: 700 38px/1.35 "STSong", "SimSun", serif; }
.cooperation-intro > p { margin: 0; color: var(--muted); font-size: 17px; }
.cooperation-options { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; padding-top: 0; }
.cooperation-options > article { min-height: 480px; display: grid; grid-template-columns: 92px minmax(0, 1fr); gap: 24px; align-content: start; padding: 46px; border: 1px solid var(--line); border-top: 4px solid var(--green); background: white; }
.cooperation-options > article.featured { border-top-color: var(--red); background: var(--ink); color: white; }
.cooperation-options > article > b { width: max-content; padding: 5px 0 12px; border-bottom: 2px solid currentColor; color: var(--red); font: 700 16px/1.3 "Microsoft YaHei", sans-serif; white-space: nowrap; }
.cooperation-options h2 { margin: 16px 0 18px; font: 700 30px/1.4 "STSong", "SimSun", serif; }
.cooperation-options p { margin: 0 0 26px; color: var(--muted); }
.cooperation-options .featured p { color: #cad8d4; }
.cooperation-options div > span { color: #ff8d82; font-size: 13px; font-weight: 750; }
.cooperation-options ul { list-style: none; margin: 0; padding: 0; }
.cooperation-options li { padding: 12px 0; border-top: 1px solid var(--line); font-weight: 700; }
.cooperation-options .featured li { border-top-color: rgba(255,255,255,.18); }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; }
.about-grid h2 { margin: 0 0 20px; font: 700 34px/1.4 "STSong", "SimSun", serif; }
.about-grid > div > p { color: var(--muted); }
.principles p { display: grid; grid-template-columns: 110px 1fr; padding: 16px 0; margin: 0; border-top: 1px solid var(--line); }
.principles p:last-child { border-bottom: 1px solid var(--line); }
.principles span { color: var(--muted); }
.company-profile { display: grid; grid-template-columns: .72fr 1.28fr; gap: 90px; background: #102f3a; color: white; }
.company-profile > div:first-child > span { color: #e5948d; font-size: 12px; font-weight: 700; }
.company-profile h2 { max-width: 460px; margin: 14px 0 0; font: 700 38px/1.45 "STSong", "SimSun", serif; }
.company-profile p { margin: 0 0 18px; color: #d6e0dd; line-height: 1.9; }
.company-profile p:last-child { margin-bottom: 0; }
.contact-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; background: var(--mist); }
.contact-section h2 { margin: 0 0 12px; font: 700 34px/1.4 "STSong", "SimSun", serif; }
.contact-section > div p { color: var(--muted); }
.contact-card { display: grid; grid-template-columns: 150px 1fr; gap: 28px; align-items: center; padding: 26px; border-left: 4px solid var(--red); background: white; }
.contact-card img { width: 150px; height: 150px; object-fit: contain; }
.contact-card strong { font-size: 20px; }
.contact-card p { margin: 8px 0 0; color: var(--muted); }

.modal-backdrop { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 20px; background: rgba(7, 30, 39, .72); }
.modal-backdrop.hidden { display: none; }
.trial-modal { position: relative; width: min(440px, 100%); padding: 38px; background: white; box-shadow: 0 28px 90px rgba(7, 30, 39, .28); }
.trial-modal .modal-kicker { color: var(--red); font-size: 12px; font-weight: 700; }
.trial-modal h2 { margin: 10px 0 5px; font: 700 30px/1.35 "STSong", "SimSun", serif; }
.trial-modal > p { margin: 0 0 22px; color: var(--muted); }
.trial-modal label { display: block; margin-bottom: 7px; font-size: 13px; font-weight: 700; }
.trial-modal input { width: 100%; height: 48px; padding: 0 13px; border: 1px solid #bbc6c2; border-radius: 0; outline: none; }
.trial-modal input:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(185, 54, 44, .1); }
.trial-modal .verify-btn { width: 100%; margin-top: 4px; }
.trial-modal > a { display: block; margin-top: 14px; color: var(--ink-2); text-align: center; font-size: 12px; }
.trial-error { min-height: 22px; padding-top: 5px; color: var(--red-dark); font-size: 12px; }
.close-btn { position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; border: 0; background: transparent; color: var(--ink); font-size: 28px; line-height: 1; cursor: pointer; }
body.modal-open { overflow: hidden; }
.form-result { color: var(--red); font-size: 13px; }

.site-footer { padding: 54px max(28px, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: 1fr auto; gap: 26px; background: #0c222c; color: white; }
.site-footer strong { font-size: 18px; }
.site-footer p { margin: 5px 0 0; color: #aebdb9; }
.site-footer nav { display: flex; align-items: start; gap: 22px; font-size: 13px; }
.footer-legal { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 20px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.16); color: #879996; font-size: 12px; }

@media (max-width: 1120px) {
  .site-header { padding-left: 22px; padding-right: 22px; }
  .brand { min-width: auto; }
  .brand small { display: none; }
  .main-nav { gap: 0; }
  .main-nav a { padding-left: 7px; padding-right: 7px; font-size: 12px; }
  .header-action { display: none; }
}

@media (max-width: 820px) {
  .site-header { height: 66px; }
  .brand img { width: 40px; height: 40px; }
  .brand strong { font-size: 13px; }
  .nav-toggle { display: block; margin-left: auto; }
  .main-nav { position: absolute; top: 66px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; padding: 12px 22px 18px; background: white; border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 11px 0; font-size: 14px; }
  .main-nav a::after { display: none; }
  .hero { min-height: calc(100vh - 66px); background-position: 61% center; align-items: end; }
  .hero-inner { width: calc(100% - 40px); padding-bottom: 54px; }
  .hero h1 { width: 100%; font-size: 37px; text-shadow: 0 1px 18px rgba(255,255,255,.9); }
  .hero::before { background: linear-gradient(180deg, rgba(255,255,255,.18) 0%, rgba(255,255,255,.82) 58%, rgba(255,255,255,.97) 100%); }
  .hero p { width: 100%; font-size: 15px; line-height: 1.7; }
  .section { padding: 68px 22px; }
  .intro-grid, .method-system, .split-lead, .security-feature, .cooperation-intro, .cooperation-options, .about-grid, .company-profile, .contact-section { grid-template-columns: 1fr; gap: 32px; }
  .section-heading { grid-template-columns: 1fr; gap: 8px; }
  .section-heading h2 { font-size: 30px; }
  .value-rail, .capability-list { grid-template-columns: 1fr 1fr; }
  .value-rail article:nth-child(2) { border-right: 0; }
  .value-rail article { border-bottom: 1px solid var(--line); }
  .value-rail article:nth-last-child(-n+2) { border-bottom: 0; }
  .stages article { grid-template-columns: 70px 1fr; gap: 16px; }
  .stage-index { font-size: 38px; }
  .governance-band, .engine-band { align-items: flex-start; flex-direction: column; }
  .inner-hero { min-height: 310px; padding: 64px 22px; background-position: 68% center; }
  .inner-hero::before { background: linear-gradient(90deg, rgba(6,28,37,.92) 0%, rgba(6,28,37,.72) 62%, rgba(6,28,37,.32) 100%); }
  .agent-row { grid-template-columns: 74px 1fr; gap: 18px; }
  .agent-row img { width: 70px; height: 70px; }
  .agent-trial-link { grid-column: 2; justify-self: start; }
  .agent-row ul { display: none; }
  .three-values { grid-template-columns: 1fr; }
  .three-values article { min-height: 200px; }
  .three-values h2 { margin-top: 36px; }
  .security-close { grid-template-columns: 1fr; gap: 12px; }
  .security-feature { margin: 48px 22px 0; padding: 58px 30px; }
  .faq-list summary { grid-template-columns: 82px 1fr 28px; gap: 14px; padding-left: 18px; padding-right: 18px; }
  .faq-answer { padding: 0 48px 28px 114px; }
  .deployment-grid { grid-template-columns: 1fr; }
  .deployment-grid article { min-height: auto; }
  .criteria-layout { grid-template-columns: 1fr; gap: 32px; }
  .criteria-summary { min-height: 190px; flex-direction: row; align-items: end; }
  .criteria-summary p { max-width: 270px; }
  .char-grid { grid-template-columns: 1fr 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .future-grid { grid-template-columns: 1fr; }
  .architecture-stack.compact-stack article { grid-template-columns: 44px 100px 1fr; padding: 18px; }
  .delivery-steps { grid-template-columns: 1fr; }
  .delivery-steps li:nth-last-child(-n+2) { border-bottom: 0; }
  .delivery-steps li:last-child { border-bottom: 1px solid var(--line); }
  .cooperation-options > article { min-height: auto; }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer nav { flex-wrap: wrap; }
  .footer-legal { flex-direction: column; gap: 8px; }
  .contact-card { grid-template-columns: 120px 1fr; }
  .contact-card img { width: 120px; height: 120px; }
}

@media (max-width: 520px) {
  .brand strong { max-width: 190px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .hero h1 { font-size: 31px; }
  .company-profile h2 { font-size: 30px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .value-rail, .capability-list { grid-template-columns: 1fr; }
  .value-rail article { border-right: 0; border-bottom: 1px solid var(--line) !important; }
  .value-rail article:last-child { border-bottom: 0 !important; }
  .stages article { grid-template-columns: 1fr; }
  .capability-list { gap: 24px; }
  .security-head h2 { font-size: 31px; }
  .security-feature::after { font-size: 170px; }
  .security-feature { margin: 36px 16px 0; padding: 48px 22px; }
  .faq-list summary { grid-template-columns: 1fr 28px; gap: 10px; min-height: 88px; }
  .faq-index { grid-column: 1; margin-bottom: -2px; }
  .faq-question { grid-column: 1; font-size: 20px; }
  .faq-list summary::after { grid-column: 2; grid-row: 1 / span 2; }
  .faq-answer { padding: 0 46px 26px 18px; }
  .faq-reasons { grid-template-columns: 1fr; }
  .faq-reasons li, .faq-reasons li:last-child { grid-column: auto; grid-template-columns: 1fr; gap: 6px; }
  .faq-answer-wide .faq-conclusion { padding: 16px; }
  .faq-list .deployment-note { margin-left: 18px; margin-right: 18px; }
  .criteria-summary { min-height: 210px; padding: 28px; flex-direction: column; align-items: flex-start; }
  .criteria-summary strong { font-size: 88px; }
  .char-grid { grid-template-columns: 1fr; }
  .char-grid li:nth-last-child(-n+2) { border-bottom: 0; }
  .char-grid li:last-child { border-bottom: 1px solid var(--line); }
  .scenario-legend { justify-content: flex-start; gap: 16px; overflow-x: auto; }
  .scenario-row { min-height: 184px; grid-template-columns: 42px 1fr; padding: 24px 20px; }
  .scenario-row h3 { padding-right: 0; }
  .status { position: static; grid-column: 2; margin-top: 12px; }
  .architecture-stack.compact-stack article { grid-template-columns: 36px 1fr; }
  .architecture-stack.compact-stack p { grid-column: 2; }
  .cooperation-intro h2 { font-size: 30px; }
  .cooperation-options > article { grid-template-columns: 1fr; gap: 20px; padding: 30px 24px; }
  .cooperation-options h2 { font-size: 26px; }
  .contact-card { grid-template-columns: 1fr; }
  .trial-modal { padding: 32px 24px 26px; }
}