:root{--bg:#fff;--paper:#fff;--gray:#f6f7f9;--ink:#1a1a1a;--text:#333;--muted:#666;--orange:#f45132;--gold:#d7a84b;--line:#e7e8eb;--radius:14px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:system-ui,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);font-size:16px;line-height:1.76}a{color:inherit;text-decoration:none}a:hover{color:var(--orange)}img{max-width:100%}.container{width:min(1120px,calc(100% - 48px));margin-inline:auto}.site-header{height:70px;background:white;position:sticky;top:0;z-index:100;border-bottom:1px solid var(--line)}.header-row{height:100%;display:flex;align-items:center;gap:28px}.brand{flex:0 0 auto;display:flex;align-items:center;justify-content:center}.brand img{display:block;height:38px;width:auto;max-width:130px;object-fit:contain}.brand-fallback,.footer-brand{font-size:25px;font-weight:900;letter-spacing:-1px;color:var(--orange)}.brand-fallback span,.footer-brand span{color:var(--ink)}.desktop-nav{display:flex;align-items:stretch;gap:27px;height:100%;margin-left:auto}.desktop-nav a{display:flex;align-items:center;font-size:14px;white-space:nowrap;position:relative;font-weight:600}.desktop-nav a.active{color:var(--orange)}.desktop-nav a.active:after{content:"";height:2px;background:var(--orange);position:absolute;bottom:0;left:0;right:0}.register-btn{background:var(--orange);color:#fff!important;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;height:40px;min-width:88px;font-size:14px;font-weight:700;margin-left:7px;white-space:nowrap}.register-btn:hover{background:#ff684e}.subnav{background:var(--gray);border-bottom:1px solid var(--line)}.subnav-inner{display:flex;gap:27px;overflow-x:auto;white-space:nowrap;scrollbar-width:none;height:44px;align-items:center}.subnav-inner a{font-size:13px;color:#666}.subnav-inner a:hover{color:var(--orange)}.menu-toggle{display:none}.drawer-mask,.mobile-drawer{display:none}.eyebrow{color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.11em;text-transform:uppercase}.hero{display:grid;grid-template-columns:1.08fr .92fr;gap:36px;align-items:center;padding-block:54px 44px}.hero h1{font-size:38px;line-height:1.28;letter-spacing:-1px;color:var(--ink);margin:12px 0 20px}.hero p{color:var(--muted);margin:0 0 22px}.hero-links{display:flex;gap:10px;flex-wrap:wrap}.hero-links a{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 15px;font-size:13px;font-weight:600}.hero-image{min-height:230px;background:var(--gray);border-radius:var(--radius);padding:12px;display:flex;align-items:center}.hero-image>.media,.hero-image>.media-placeholder{width:100%}.section{padding-block:34px}.section.alt{background:var(--gray)}.section-heading{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:20px}.section-heading h2{font-size:25px;line-height:1.35;color:var(--ink);margin:6px 0 0}.section-heading p{margin:0;color:var(--muted);max-width:520px;font-size:14px}.section-heading>a{font-size:13px;color:var(--orange);font-weight:700;white-space:nowrap}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.topic-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:22px 20px;display:block;min-width:0;transition:transform .15s,border-color .15s}.topic-card:hover{transform:translateY(-3px);border-color:#f5b0a3}.topic-card h3{margin:14px 0 8px;font-size:18px;color:var(--ink)}.topic-card p{font-size:14px;line-height:1.7;color:var(--muted);margin:0}.topic-arrow{display:inline-grid;place-items:center;background:#fff0ed;border-radius:9px;color:var(--orange);width:34px;height:34px}.split{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:center}.story-panel{background:#fff;border:1px solid var(--line);padding:24px;border-radius:var(--radius);min-width:0}.story-panel h3{font-size:21px;margin:0 0 10px;color:var(--ink)}.story-panel p{margin:0 0 14px;color:var(--muted)}.text-link{color:var(--orange);font-size:14px;font-weight:700}.story-list{display:grid;gap:12px}.story-list>a{display:flex;gap:16px;align-items:flex-start;border-bottom:1px solid var(--line);padding-bottom:13px}.story-num{font-size:22px;font-weight:800;line-height:1.25;color:#e0b18a;min-width:34px}.story-list strong{display:block;color:var(--ink);font-size:16px}.story-list small{color:var(--muted);display:block;margin-top:3px;font-size:13px}.image-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px}.image-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.image-card{min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px;overflow:hidden}.image-card h3{font-size:16px;margin:12px 5px 4px;color:var(--ink)}.image-card p{font-size:13px;color:var(--muted);margin:0 5px 9px;line-height:1.65}.media{width:100%;min-width:0;max-width:100%;background:var(--gray);border-radius:11px;overflow:hidden;display:flex;align-items:center;justify-content:center}.media img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.media-natural img{height:auto;max-height:270px;width:auto;max-width:100%}.media-square{aspect-ratio:1}.media-wide{aspect-ratio:16/9}.media-banner{aspect-ratio:16/7}.media-portrait{aspect-ratio:3/4}.media-placeholder{background:linear-gradient(130deg,#f2f3f5,#e9eaed);border-radius:11px;min-height:140px}.hero-image .media-placeholder{width:100%;height:240px}.image-card .media-placeholder{height:155px}.notice{background:#fff8f6;border-left:3px solid var(--orange);border-radius:6px;padding:14px 17px;font-size:14px;color:#654238}.breadcrumbs{color:var(--muted);font-size:13px;padding-top:24px}.breadcrumbs a{color:var(--orange)}.page-intro{padding:25px 0 30px;border-bottom:1px solid var(--line)}.page-intro h1{margin:10px 0 12px;font-size:33px;line-height:1.3;color:var(--ink)}.page-intro p{font-size:17px;color:var(--muted);margin:0;max-width:780px}.page-cols{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:40px;padding-block:32px 55px}.article-body{max-width:810px;min-width:0}.article-section{margin-bottom:34px}.article-section h2{font-size:23px;line-height:1.4;margin:0 0 14px;color:var(--ink);position:relative;padding-left:15px}.article-section h2:before{content:"";width:4px;height:21px;background:var(--orange);position:absolute;left:0;top:6px;border-radius:4px}.article-section p{margin:0 0 14px;line-height:1.88}.article-callout{background:var(--gray);border-radius:12px;padding:18px 22px;margin:22px 0}.article-callout strong{color:var(--ink)}.side-box{position:sticky;top:135px;align-self:start;border:1px solid var(--line);border-radius:12px;padding:18px}.side-box h3{margin:0 0 10px;font-size:16px}.side-box a{display:flex;justify-content:space-between;gap:8px;padding:10px 0;border-top:1px solid var(--line);font-size:14px}.side-box a span{color:var(--orange)}.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.related-grid a{border:1px solid var(--line);border-radius:11px;padding:14px 17px;font-size:14px;font-weight:700;display:flex;justify-content:space-between}.related-grid span{color:var(--orange)}.faq-list details{padding:16px 2px;border-bottom:1px solid var(--line)}.faq-list summary{font-size:17px;font-weight:700;cursor:pointer;color:var(--ink)}.faq-list details p{color:var(--muted);margin:10px 0 0}.site-footer{background:#1a1a1a;color:#eee;margin-top:30px;padding-top:44px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:32px}.footer-grid p{font-size:13px;line-height:1.8;color:#b9b9b9}.footer-grid h3{margin:0 0 15px;font-size:15px}.footer-grid a{display:block;color:#ccc;font-size:13px;margin-bottom:8px}.footer-grid a:hover{color:#ff957c}.footer-brand span{color:#fff}.footer-bottom{border-top:1px solid #353535;padding:17px 0;margin-top:30px;display:flex;justify-content:space-between;gap:18px;color:#aaa;font-size:12px}.backtop{position:fixed;right:21px;bottom:20px;width:38px;height:38px;border:0;border-radius:50%;background:var(--orange);color:#fff;cursor:pointer;display:none;z-index:80}.backtop.visible{display:block}.mobile-bottom{display:none}
@media(max-width:980px){.site-header{height:59px}.header-row{justify-content:space-between}.desktop-nav{display:none}.menu-toggle{border:0;background:transparent;width:36px;height:36px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:7px;cursor:pointer;order:0}.menu-toggle span{height:2px;background:#333;width:22px}.brand{margin-right:auto;margin-left:5px}.brand img{height:30px;max-width:115px}.register-btn{height:36px;min-width:77px;margin-left:0}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);height:100dvh;background:#fff;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;overflow-y:auto;box-shadow:4px 0 18px #0001}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:11000;opacity:0;pointer-events:none}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}body.drawer-open{overflow:hidden}.drawer-top{display:flex;justify-content:space-between;align-items:center;padding:18px;border-bottom:1px solid var(--line)}.drawer-close{border:0;background:var(--gray);width:32px;height:32px;border-radius:6px;font-size:22px}.drawer-group{padding:14px 18px;border-bottom:1px solid var(--line)}.drawer-group h2{font-size:13px;color:var(--orange);margin:0 0 8px}.drawer-group a{display:block;font-size:14px;padding:7px 0}.hero{gap:22px}.footer-grid{grid-template-columns:repeat(2,1fr)}.page-cols{grid-template-columns:minmax(0,1fr)}.side-box{position:static}.mobile-bottom{position:fixed;bottom:0;left:0;right:0;background:#fff;display:grid;grid-template-columns:repeat(4,1fr);box-shadow:0 -4px 18px #0000000d;z-index:90;height:61px}.mobile-bottom a{display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.25;color:#666;font-weight:700;font-size:18px}.mobile-bottom small{font-size:12px;font-weight:500}.site-footer{padding-bottom:67px}.backtop{bottom:75px}}
@media(max-width:768px){.container{width:calc(100% - 40px)}.hero{grid-template-columns:1fr;padding-block:24px 30px}.hero-image{grid-row:1;min-height:0}.hero h1{font-size:30px}.hero-image .media-natural img{max-height:205px}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:1fr}.image-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.image-grid.two{grid-template-columns:1fr}.section{padding-block:26px}.section-heading h2{font-size:22px}.page-intro h1{font-size:27px}.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-bottom{flex-direction:column}}
@media(max-width:480px){.container{width:calc(100% - 32px)}.hero h1{font-size:27px}.hero p{font-size:15px}.topic-card{padding:14px}.topic-card h3{font-size:16px}.topic-card p{font-size:13px}.image-grid{gap:11px}.image-card h3{font-size:15px}.image-card p{font-size:12px}.section-heading{align-items:start}.section-heading p{display:none}.page-intro h1{font-size:25px}.article-section h2{font-size:21px}.related-grid{grid-template-columns:1fr}.footer-grid{gap:24px 15px}.footer-grid div:first-child{grid-column:1/-1}.footer-grid h3{font-size:14px}.footer-grid a{font-size:12px}.subnav-inner{gap:18px}}
@media(max-width:340px){.topic-grid{grid-template-columns:1fr}.register-btn{min-width:72px}.hero h1{font-size:26px}}
.feature-hero{background:linear-gradient(120deg,#fffaf8,#fff);padding:34px 28px;border-radius:18px;border:1px solid #f0e6e0;margin-top:24px}.divided{border-top:1px solid #ececec}.feature-hero h1{max-width:660px}@media(max-width:768px){.feature-hero{padding:24px 16px}.feature-hero .hero-image{grid-row:1}}