:root {
  --ink: #102a38;
  --ink-soft: #274756;
  --paper: #f7f7f3;
  --white: #ffffff;
  --line: #d7dfdc;
  --green: #26766f;
  --green-pale: #ddede8;
  --orange: #d7663f;
  --muted: #60737a;
  --serif: "Noto Serif SC", "Songti SC", STSong, serif;
  --sans: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 16px; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--green); }
.shell { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.eyebrow { color: var(--green); font-size: .78rem; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.site-header { background: rgba(247,247,243,.95); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(10px); }
.nav { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { font-size: 1.08rem; font-weight: 800; letter-spacing: .04em; }
.brand span { color: var(--green); margin-left: 8px; font-size: .76rem; letter-spacing: .12em; }
.nav-links { display: flex; gap: 21px; align-items: center; font-size: .9rem; }
.nav-links a[aria-current="page"] { color: var(--green); font-weight: 700; }
.nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; background: var(--ink); color: white; min-height: 42px; padding: 0 18px; font-weight: 700; font-size: .9rem; border: 1px solid var(--ink); transition: .2s ease; }
.nav-cta:hover, .button:hover { color: white; background: var(--green); border-color: var(--green); transform: translateY(-1px); }
.button.secondary { background: transparent; color: var(--ink); border-color: var(--ink); }
.button.secondary:hover { background: var(--green-pale); color: var(--ink); border-color: var(--green); }
.hero { padding: 92px 0 70px; background: var(--paper); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(260px, .75fr); gap: 56px; align-items: end; }
h1, h2, h3 { line-height: 1.22; margin: 0; letter-spacing: -.025em; }
h1 { font-family: var(--serif); font-size: clamp(2.5rem, 5vw, 4.6rem); max-width: 850px; font-weight: 700; }
h2 { font-family: var(--serif); font-size: clamp(1.8rem, 3vw, 2.7rem); }
h3 { font-size: 1.15rem; }
.hero-lead { font-size: 1.15rem; max-width: 700px; margin: 26px 0 32px; color: var(--ink-soft); }
.hero-aside { border-left: 2px solid var(--orange); padding: 2px 0 2px 24px; color: var(--ink-soft); font-size: .95rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.section { padding: 78px 0; }
.section.white { background: var(--white); }
.section.dark { background: var(--ink); color: white; }
.section.dark .eyebrow { color: #91d5c6; }
.section-head { max-width: 720px; margin-bottom: 38px; }
.section-head p { margin: 15px 0 0; color: var(--muted); }
.section.dark .section-head p { color: #d1dedd; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card { padding: 27px; border: 1px solid var(--line); background: var(--white); min-height: 235px; display: flex; flex-direction: column; }
.card p { color: var(--muted); margin: 14px 0 22px; font-size: .94rem; }
.card .link { margin-top: auto; font-weight: 700; color: var(--green); }
.number { color: var(--orange); font-family: var(--serif); font-size: 2rem; line-height: 1; margin-bottom: 18px; }
.principle { padding: 23px 0; border-top: 1px solid rgba(255,255,255,.2); display: grid; grid-template-columns: 60px 1fr; gap: 18px; }
.principle strong { color: #91d5c6; font-size: 1.1rem; }
.page-intro { padding: 70px 0 48px; background: var(--paper); border-bottom: 1px solid var(--line); }
.page-intro p { max-width: 760px; color: var(--ink-soft); font-size: 1.1rem; margin: 21px 0 0; }
.content { max-width: 820px; }
.content h2 { margin-top: 52px; }
.content h3 { margin: 30px 0 8px; }
.content p, .content li { color: var(--ink-soft); }
.content ul { padding-left: 1.3em; }
.callout { margin: 34px 0; padding: 25px; background: var(--green-pale); border-left: 3px solid var(--green); }
.callout p { margin: 0; color: var(--ink); }
.consult { padding: 64px 0; background: #e9efed; }
.consult-grid { display: grid; grid-template-columns: 1fr minmax(260px, .65fr); gap: 50px; align-items: center; }
.contact-box { background: var(--white); padding: 28px; border: 1px solid var(--line); }
.contact-box p { margin: 7px 0; color: var(--ink-soft); }
.contact-box a { color: var(--green); font-weight: 700; }
.form-note { font-size: .86rem; color: var(--muted); margin-top: 14px; }
.footer { background: #09212d; color: #d9e4e1; padding: 38px 0; font-size: .85rem; }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.footer a { color: #d9e4e1; }
.footer small { color: #9bb2b1; }
.tag { display: inline-block; border: 1px solid var(--line); color: var(--muted); padding: 4px 9px; font-size: .75rem; margin: 17px 0 5px; }
@media (max-width: 760px) {
  .shell { width: min(100% - 32px, 1160px); }
  .nav { min-height: 62px; }
  .nav-links { display: none; }
  .brand span { display: none; }
  .hero { padding: 62px 0 52px; }
  .hero-grid, .consult-grid, .grid-3, .grid-2 { grid-template-columns: 1fr; gap: 16px; }
  .hero-aside { margin-top: 8px; }
  .section { padding: 55px 0; }
  .page-intro { padding: 52px 0 40px; }
  .card { min-height: auto; }
}