:root{--primary:#6C4FF8;--primary-soft:#9B8AFB;--ink:#252331;--muted:#716E7E;--deep:#1E1B2E;--bg:#F7F6FB;--bg2:#EEEAF8;--accent:#F06A8A;--line:#DDD8EC;--white:#fff;--shadow:0 18px 45px rgba(30,27,46,.10)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:min(1160px,calc(100% - 40px));margin-inline:auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:100;background:var(--deep);color:#fff;padding:10px 14px;border-radius:10px}.skip-link:focus{top:16px}.site-header{position:sticky;top:0;z-index:30;background:rgba(247,246,251,.93);backdrop-filter:blur(12px);border-bottom:1px solid rgba(113,110,126,.16)}.header-inner{display:flex;align-items:center;gap:26px;min-height:78px}.brand{display:flex;align-items:center;gap:12px;min-width:max-content}.brand img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:var(--bg2)}.brand span{display:grid;line-height:1.2}.brand strong{font-size:1.05rem}.brand small{color:var(--muted);margin-top:5px}.primary-nav{margin-left:auto;display:flex;gap:6px;align-items:center}.primary-nav a{padding:9px 13px;border-radius:999px;color:var(--muted);font-weight:650}.primary-nav a:hover,.primary-nav a[aria-current="page"]{background:var(--bg2);color:var(--deep)}.menu-toggle{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:12px;padding:9px 12px}.site-main{overflow:hidden}.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:54px;align-items:center;padding-block:76px 64px}.eyebrow{margin:0 0 12px;color:var(--primary);font-size:.82rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase}.hero h1{font-size:clamp(2.4rem,5vw,4.7rem);line-height:1.08;letter-spacing:-.04em;margin:0;max-width:12ch;color:var(--deep)}.lead{font-size:1.12rem;color:var(--muted);max-width:680px;margin:24px 0 0}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:12px;font-weight:800}.button.primary{background:var(--primary);color:#fff;box-shadow:0 10px 24px rgba(108,79,248,.22)}.button.secondary{background:#fff;border:1px solid var(--line)}.hero-media{margin:0;position:relative;padding:18px;background:linear-gradient(145deg,#fff,var(--bg2));border-radius:32px;box-shadow:var(--shadow);transform:rotate(1.2deg)}.hero-media:after{content:"";position:absolute;width:90px;height:90px;border-radius:50%;background:var(--accent);right:-25px;bottom:-25px;opacity:.16;z-index:-1}.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:22px;background:var(--bg2)}.content-flow{padding-block:34px 50px}.story-block{display:grid;grid-template-columns:100px minmax(0,760px);gap:20px;padding:40px 0;border-top:1px solid var(--line)}.story-block.offset{margin-left:13%}.story-index{font-size:1rem;color:var(--primary-soft);font-weight:800;letter-spacing:.18em}.story-block h2,.section-heading h2{margin:0;color:var(--deep);line-height:1.25}.story-block h2{font-size:clamp(1.45rem,2.7vw,2.25rem)}.story-block p{margin:14px 0 0;color:var(--muted);font-size:1.02rem}.route-grid{padding-block:70px}.section-heading{max-width:740px;margin-bottom:28px}.section-heading h2{font-size:clamp(1.8rem,3vw,3rem)}.section-heading.compact{margin-bottom:20px}.route-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.route-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;display:grid;gap:8px;transition:.2s ease}.route-card strong{font-size:1.1rem}.route-card span{color:var(--muted)}.route-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--primary-soft)}.notes{padding-block:50px 60px}.notes-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.notes-grid article{background:rgba(255,255,255,.75);border:1px solid var(--line);border-radius:18px;padding:20px}.notes-grid h3{margin:0 0 8px;font-size:1.02rem}.notes-grid p{margin:0;color:var(--muted);font-size:.95rem}.faq{padding-block:54px 70px}.faq-list{display:grid;gap:10px;max-width:900px}.faq details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 18px}.faq summary{cursor:pointer;font-weight:800;padding:17px 26px 17px 0;position:relative}.faq summary::marker{color:var(--primary)}.faq details p{color:var(--muted);margin:0;padding:0 0 18px}.next-links{display:flex;flex-wrap:wrap;gap:10px;padding-bottom:80px}.next-links a{display:flex;align-items:center;gap:12px;background:var(--deep);color:#fff;padding:13px 16px;border-radius:12px;font-weight:750}.next-links span{color:var(--primary-soft)}.site-footer{background:var(--deep);color:#fff;padding:46px 0 22px}.footer-grid{display:grid;grid-template-columns:1.3fr .8fr 1fr;gap:40px}.footer-grid p{color:#c8c3d7;margin:9px 0}.footer-grid>div{display:grid;align-content:start;gap:8px}.footer-title{font-weight:800;margin-bottom:3px}.footer-grid a{color:#d9d4e7}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.13);padding-top:20px;margin-top:34px;color:#aaa5b9;font-size:.9rem}.not-found{padding-block:110px;max-width:760px}.not-found h1{font-size:clamp(2.3rem,6vw,5rem);line-height:1.05;margin:0;color:var(--deep)}.not-found>p:not(.eyebrow){color:var(--muted);font-size:1.08rem}@media(max-width:820px){.shell{width:min(100% - 28px,1160px)}.header-inner{min-height:68px}.brand small{display:none}.menu-toggle{display:block}.primary-nav{position:absolute;left:14px;right:14px;top:74px;margin:0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;display:none;box-shadow:var(--shadow)}.primary-nav.open{display:grid}.primary-nav a{border-radius:10px}.hero{grid-template-columns:1fr;gap:30px;padding-block:46px}.hero h1{max-width:15ch}.hero-media{max-width:620px}.story-block,.story-block.offset{grid-template-columns:58px 1fr;margin-left:0}.route-cards,.notes-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.next-links{padding-bottom:54px}}@media(max-width:520px){.hero h1{font-size:2.25rem}.lead{font-size:1rem}.hero-actions{display:grid}.button{width:100%}.story-block{grid-template-columns:1fr;gap:8px;padding:30px 0}.story-index{font-size:.78rem}.hero-media{padding:10px;border-radius:22px}.hero-media img{border-radius:15px}.site-footer{padding-top:36px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.route-card:hover{transform:none}}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

/* 阅读与打印增强 */
.article-intro{max-width:920px}.article-intro h1{max-width:18ch}.article-flow{padding-top:0}.article-flow .story-block p+p{margin-top:10px}.primary-nav a,.next-links a,.button,.route-card{transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease}.button:hover,.next-links a:hover{transform:translateY(-2px)}.site-footer a:hover{text-decoration:underline;text-underline-offset:4px}@media (hover:hover){.primary-nav a:hover{box-shadow:inset 0 0 0 1px rgba(108,79,248,.12)}}@media print{.site-header,.site-footer,.hero-actions,.next-links,.menu-toggle{display:none!important}body{background:#fff;color:#111}.shell{width:100%;max-width:none}.hero,.not-found{padding:24px 0}.story-block,.story-block.offset{margin-left:0;grid-template-columns:56px 1fr;break-inside:avoid}.story-block p,.notes-grid p{color:#333}.hero-media{box-shadow:none;border:1px solid #ddd}.notes-grid{grid-template-columns:1fr 1fr}.faq details{break-inside:avoid}.faq details>p{display:block}.content-flow,.notes,.faq{padding-top:20px;padding-bottom:20px}}