:root { color: #172033; background: #f5f7fb; font: 16px/1.75 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }
a { color: #1859bc; }
.shell { width: min(1120px, calc(100% - 32px)); margin: 28px auto; padding: 32px 46px; border: 1px solid #dfe7f1; border-radius: 20px; background: #fff; box-shadow: 0 16px 45px rgb(15 35 65 / 8%); }
.nav { display: flex; justify-content: space-between; gap: 24px; align-items: center; padding-bottom: 25px; border-bottom: 1px solid #e8eef5; font-size: 14px; }
.brand { color: #0d315d; font-size: 16px; font-weight: 760; letter-spacing: -.02em; text-decoration: none; }
.brand span { color: #49709b; font-weight: 600; }
.nav-links { display: flex; flex-wrap: wrap; gap: 18px; }
.nav-links a { color: #53677f; text-decoration: none; }
.nav-links a:hover { color: #1859bc; }
.hero { padding: 76px 0 66px; max-width: 800px; }
h1, h2, h3 { color: #102f56; }
h1 { margin: 0; font-size: clamp(39px, 6vw, 64px); line-height: 1.13; letter-spacing: -.055em; }
h2 { margin: 0; font-size: clamp(26px, 3.5vw, 36px); line-height: 1.3; letter-spacing: -.035em; }
h3 { margin: 0 0 8px; font-size: 18px; line-height: 1.45; }
p, li { color: #42536a; }
.eyebrow, .section-kicker { margin: 0 0 12px; color: #2868ca; font-size: 13px; font-weight: 750; letter-spacing: .11em; }
.lede { max-width: 760px; margin: 23px 0 0; color: #43546a; font-size: clamp(17px, 2.2vw, 20px); line-height: 1.85; }
.hero-note { margin: 20px 0 0; color: #708097; font-size: 14px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-block; padding: 11px 18px; border-radius: 9px; background: #1d61c4; color: #fff; font-weight: 700; text-decoration: none; box-shadow: 0 5px 12px rgb(29 97 196 / 16%); }
.button:hover { background: #174f9f; }
.button.secondary { border: 1px solid #cbd9ea; background: #fff; color: #1d569f; box-shadow: none; }
.section { padding: 59px 0; border-top: 1px solid #e7edf4; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 32px; }
.feature-card { min-height: 214px; padding: 23px 22px; border: 1px solid #e0e8f2; border-radius: 14px; background: linear-gradient(145deg, #fff, #f8fbff); }
.feature-card p { margin: 0; font-size: 14px; line-height: 1.8; }
.feature-index { display: block; margin-bottom: 19px; color: #7ea6df; font-size: 13px; font-weight: 760; letter-spacing: .1em; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 32px 0; }
.card { padding: 22px; border: 1px solid #e0e8f2; border-radius: 14px; background: #f8fbff; }
.card p { margin: 0; font-size: 14px; }
.card p + p { margin-top: 12px; }
.updated { margin: 0; color: #708097; font-size: 14px; }
.split-section { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(260px, .75fr); gap: 45px; align-items: start; }
.steps { display: grid; gap: 14px; margin: 29px 0 0; padding: 0; list-style: none; counter-reset: step; }
.steps li { position: relative; padding-left: 46px; color: #223d5f; }
.steps li::before { position: absolute; left: 0; top: 1px; display: grid; width: 29px; height: 29px; place-items: center; border-radius: 50%; background: #e9f2ff; color: #205daf; content: counter(step); counter-increment: step; font-size: 13px; font-weight: 800; }
.steps strong { display: block; color: #1e3c61; }
.steps span { display: block; color: #607187; font-size: 14px; }
.privacy-panel { padding: 28px; border-radius: 15px; background: #10355f; }
.privacy-panel h3 { color: #fff; font-size: 22px; }
.privacy-panel p { color: #d8e6f7; font-size: 14px; }
.privacy-panel .section-kicker { color: #91beff; }
.privacy-panel a { color: #fff; font-weight: 700; }
.contact-section { max-width: 790px; }
.contact-section > p:not(.section-kicker) { margin: 18px 0 0; }
.notice { margin: 0; padding: 16px 18px; border-radius: 11px; background: #f0f6ff; color: #31547b; font-size: 14px; }
.footer { display: flex; justify-content: space-between; gap: 14px; margin-top: 38px; padding-top: 20px; border-top: 1px solid #e7edf4; color: #718097; font-size: 13px; }
.footer span:last-child { display: flex; gap: 16px; }
.footer a { color: #526b8a; text-decoration: none; }
@media (max-width: 800px) { .feature-grid, .cards { grid-template-columns: repeat(2, 1fr); } .split-section { grid-template-columns: 1fr; gap: 28px; } }
@media (max-width: 620px) { .shell { width: 100%; margin: 0; padding: 24px 21px; border: 0; border-radius: 0; box-shadow: none; } .nav { align-items: flex-start; flex-direction: column; } .nav-links { gap: 13px; } .hero { padding: 52px 0 45px; } .section { padding: 42px 0; } .feature-grid, .cards { grid-template-columns: 1fr; } .feature-card { min-height: auto; } .footer { align-items: flex-start; flex-direction: column; } }