:root{
    --ink:#26302d;
    --muted:#64706a;
    --deep:#173c33;
    --deep-2:#245445;
    --cream:#f6f0e4;
    --cream-2:#fbf8f1;
    --sand:#d7c6a4;
    --line:rgba(38,48,45,.13);
    --shadow:0 24px 60px rgba(23,60,51,.13);
    --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--cream-2);line-height:1.75}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1160px,calc(100% - 40px));margin:0 auto}.container.narrow{width:min(850px,calc(100% - 40px))}
.site-header{position:sticky;top:0;z-index:20;background:rgba(251,248,241,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.header-inner{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand,.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--deep)}.brand-mark{display:inline-grid;place-items:center;width:46px;height:46px;border-radius:16px;background:var(--deep);color:var(--cream);letter-spacing:-.04em}.brand-text{letter-spacing:.12em}.main-nav{display:flex;align-items:center;gap:4px}.main-nav a{padding:10px 14px;border-radius:999px;color:var(--muted);font-size:15px}.main-nav a:hover,.main-nav a.active{background:#edf2ea;color:var(--deep)}.nav-toggle{display:none;border:0;background:transparent;padding:10px}.nav-toggle span{display:block;width:24px;height:2px;background:var(--deep);margin:5px 0;border-radius:2px}
.hero{padding:86px 0 70px;overflow:hidden}.hero-home{background:radial-gradient(circle at 80% 10%,#dce8cf 0,rgba(220,232,207,0) 34%),linear-gradient(135deg,#fbf8f1 0%,#eef1e8 58%,#e2d7c2 100%)}.hero-grid,.split-layout{display:grid;grid-template-columns:1.02fr .98fr;gap:58px;align-items:center}.split-layout.reverse{grid-template-columns:.98fr 1.02fr}.align-start{align-items:start}.eyebrow{margin:0 0 12px;color:var(--deep-2);font-size:14px;letter-spacing:.18em;text-transform:uppercase;font-weight:800}.hero h1,.page-hero h1{font-size:clamp(38px,6vw,72px);line-height:1.08;margin:0 0 24px;letter-spacing:-.05em}.hero-lead,.page-hero p{font-size:18px;color:#46524d;margin:0 0 30px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:999px;font-weight:800;border:1px solid transparent;cursor:pointer}.btn.primary{background:var(--deep);color:var(--cream)}.btn.ghost{border-color:rgba(23,60,51,.2);color:var(--deep);background:rgba(255,255,255,.35)}.btn:hover{transform:translateY(-1px)}.hero-tags{display:flex;gap:10px;flex-wrap:wrap}.hero-tags span,.tag{display:inline-flex;padding:6px 11px;border-radius:999px;background:#eef2ea;color:var(--deep-2);font-size:13px;font-weight:700}.hero-visual img,.rounded-media{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.6)}
.section{padding:78px 0}.muted{background:#f1ecdf}.soft-green{background:linear-gradient(135deg,#e7eee3 0%,#f7f0df 100%)}.section-head{max-width:710px;margin-bottom:34px}.section-head.wide{max-width:880px;text-align:center;margin-left:auto;margin-right:auto}.section h2,.section-head h2,.split-layout h2{font-size:clamp(28px,4vw,46px);line-height:1.16;margin:0 0 16px;letter-spacing:-.04em}.section p{color:#55615b}.category-grid,.feature-grid,.recommend-grid,.topic-grid,.course-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.category-card,.feature-grid article,.recommend-card,.topic-card,.course-grid article,.contact-card,.message-form{background:rgba(255,255,255,.68);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 12px 30px rgba(23,60,51,.06)}.category-card img{width:70px;height:70px;margin-bottom:18px}.category-card h3,.video-body h3,.feature-grid h3,.recommend-card h3,.topic-card h2,.course-grid h3{margin:0 0 10px;color:var(--deep)}.check-list{padding:0;margin:22px 0 0;list-style:none}.check-list li{position:relative;padding-left:28px;margin-bottom:10px;color:#46524d}.check-list li:before{content:"";position:absolute;left:0;top:.65em;width:12px;height:12px;border-radius:50%;background:var(--deep-2);box-shadow:inset 0 0 0 4px #dfe9d7}.mini-stats{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}.mini-stats span{background:rgba(255,255,255,.65);border:1px solid var(--line);border-radius:18px;padding:12px 16px}.mini-stats strong{display:block;color:var(--deep);font-size:26px;line-height:1}.video-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.video-card{background:#fff;border:1px solid var(--line);border-radius:26px;overflow:hidden;box-shadow:0 14px 34px rgba(23,60,51,.08)}.video-card.large{display:grid;grid-template-columns:1fr 1fr}.video-card img{width:100%;height:230px;object-fit:cover}.video-card.large img{height:100%;min-height:280px}.video-body{padding:22px}.doc-list{display:grid;gap:14px}.doc-item{display:grid;grid-template-columns:74px 1fr;gap:20px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px}.doc-index{display:grid;place-items:center;width:58px;height:58px;border-radius:18px;background:var(--deep);color:var(--cream);font-weight:900}.doc-item h3{margin:0 0 5px;color:var(--deep)}.doc-item p{margin:0}.recommend-grid{grid-template-columns:repeat(3,1fr)}.recommend-card span,.topic-card span,.course-grid span{font-size:13px;font-weight:800;color:var(--deep-2);letter-spacing:.12em}.text-link{display:inline-flex;color:var(--deep);font-weight:900;border-bottom:2px solid var(--deep);margin-top:10px}.faq-wrap{max-width:880px}.faq-wrap details{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px 22px;margin:12px 0}.faq-wrap summary{cursor:pointer;font-weight:900;color:var(--deep)}.contact-band{background:var(--deep);color:var(--cream)}.contact-band p,.contact-band .eyebrow{color:#e2d7c2}.contact-band-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}.page-hero{padding:82px 0;background:linear-gradient(135deg,#edf2e9,#f7edda);text-align:center}.doc-hero{background:linear-gradient(135deg,#e8efe5,#ece0c8)}.topic-hero{background:linear-gradient(135deg,#f2ead9,#e1ebdf)}.learning-hero{background:linear-gradient(135deg,#e7efe5,#f5e9d2)}.video-hero{background:linear-gradient(135deg,#edf0e5,#e7d8bf)}.contact-hero{background:linear-gradient(135deg,#e7efe5,#f4eddf)}.filter-panel{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:18px;background:#fff;border:1px solid var(--line);border-radius:999px}.filter-panel span{font-weight:900;color:var(--deep);margin-right:4px}.filter-panel a{padding:7px 14px;background:#edf2ea;border-radius:999px;color:var(--deep-2);font-weight:700}.topic-grid{grid-template-columns:repeat(3,1fr)}.topic-card img{width:56px;height:56px;margin-bottom:12px}.timeline{max-width:880px}.timeline-row{display:grid;grid-template-columns:140px 1fr;gap:22px;padding:24px 0;border-bottom:1px solid var(--line)}.timeline-row span{font-weight:900;color:var(--deep)}.timeline-row h3,.timeline-row p{margin:0 0 6px}.course-grid{grid-template-columns:repeat(2,1fr)}.course-grid a{font-weight:900;color:var(--deep)}.plan-table{max-width:900px}.plan-row{display:grid;grid-template-columns:110px 1fr;gap:20px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 20px;margin-bottom:12px}.plan-row span{font-weight:900;color:var(--deep)}.plan-row p{margin:0}.values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.values div{padding:26px;border-left:4px solid var(--deep);background:#fff;border-radius:0 22px 22px 0}.values span{font-size:14px;font-weight:900;color:var(--deep-2)}.contact-card img{margin-top:18px;border-radius:18px}.message-form{display:grid;gap:14px}.message-form label{display:grid;gap:6px;font-weight:800;color:var(--deep)}.message-form input,.message-form textarea,.message-form select{width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;padding:12px 14px;font:inherit;color:var(--ink)}.form-note{font-size:14px;margin:0;color:var(--muted)}.break{word-break:break-all}.site-footer{padding:54px 0;background:#17231f;color:#dbe3dd}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:28px}.site-footer p{color:#aebbb4}.site-footer h3{margin:0 0 12px;color:#f6f0e4}.site-footer a{display:block;color:#dbe3dd;margin:7px 0}.footer-brand{color:#f6f0e4;margin-bottom:10px}.site-footer .footer-brand{display:inline-flex}
@media (max-width:980px){.hero-grid,.split-layout,.split-layout.reverse{grid-template-columns:1fr;gap:34px}.category-grid,.feature-grid{grid-template-columns:repeat(2,1fr)}.video-card-grid,.topic-grid,.values{grid-template-columns:1fr 1fr}.video-card.large{grid-template-columns:1fr}.recommend-grid,.course-grid,.footer-grid{grid-template-columns:1fr 1fr}.main-nav{position:absolute;left:20px;right:20px;top:74px;display:none;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:22px;padding:12px;box-shadow:var(--shadow)}.main-nav.open{display:flex}.nav-toggle{display:block}.main-nav a{padding:12px 14px}}
@media (max-width:640px){.container,.container.narrow{width:min(100% - 28px,1160px)}.hero,.page-hero{padding:56px 0}.section{padding:54px 0}.hero h1,.page-hero h1{font-size:38px}.category-grid,.feature-grid,.video-card-grid,.topic-grid,.recommend-grid,.course-grid,.values,.footer-grid{grid-template-columns:1fr}.doc-item,.timeline-row,.plan-row{grid-template-columns:1fr}.contact-band-inner{align-items:flex-start;flex-direction:column}.filter-panel{border-radius:24px}.video-card img{height:210px}.header-inner{min-height:68px}.main-nav{top:68px}.brand-text{display:none}}