/* 51吃瓜全站样式 */
:root{--bg:#F5F7FF;--nav:rgba(12,18,40,.94);--title:#131A35;--primary:#5B6CFF;--deep:#16213E;--cyan:#00D4FF;--gold:#FFC857;--rose:#D94F70;--violet:#7A5CFF;--text:#1F2740;--muted:#66708A;--soft:#9AA4BA;--card:#fff;--border:rgba(91,108,255,.18);--shadow:0 20px 46px rgba(25,43,91,.14);--gradient:linear-gradient(135deg,#5B6CFF 0%,#7A5CFF 48%,#00D4FF 100%)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:var(--bg);color:var(--text);font-family:"Microsoft YaHei","PingFang SC",system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.75;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:inherit}img{max-width:100%;height:auto;display:block}button{font:inherit}.skip-link{position:fixed;left:16px;top:-80px;z-index:12000;background:#fff;padding:10px 16px;border-radius:12px}.skip-link:focus{top:12px}.container{width:min(1180px,calc(100% - 40px));margin:auto}.section{padding:82px 0}.section-tight{padding:56px 0}.section-soft{background:linear-gradient(180deg,rgba(234,247,255,.84),rgba(245,247,255,.38))}.section-dark{background:#11182F;color:#EEF2FF}.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--violet);font-size:14px;font-weight:800;letter-spacing:.08em}.section-kicker:before{content:"";width:26px;height:3px;border-radius:99px;background:linear-gradient(90deg,var(--gold),var(--rose))}.section-title{margin:12px 0 14px;color:var(--title);font-size:clamp(30px,4vw,48px);line-height:1.18;letter-spacing:-.03em}.section-desc{max-width:780px;margin:0;color:var(--muted);font-size:17px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:34px}.text-link{display:inline-flex;gap:8px;color:var(--primary);font-weight:800;text-decoration:none}.main-btn,.ghost-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:999px;font-weight:800;text-decoration:none;transition:.25s}.main-btn{background:var(--gradient);color:#fff;box-shadow:0 14px 32px rgba(91,108,255,.25)}.main-btn:hover,.ghost-btn:hover{transform:translateY(-2px)}.ghost-btn{border:1px solid rgba(91,108,255,.28);color:var(--primary);background:rgba(255,255,255,.78)}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.card,.zone-card,.review-card,.content-block,.faq-item{background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:22px}
.site-header{position:sticky;top:0;width:100%;z-index:9999;background:var(--nav);backdrop-filter:blur(12px);box-shadow:0 8px 26px rgba(25,43,91,.16)}.header-inner{width:min(1280px,calc(100% - 36px));margin:auto;min-height:72px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px}.site-logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:900;text-decoration:none;white-space:nowrap}.site-logo img{width:auto;max-width:48px;max-height:44px;object-fit:contain}.nav-core{display:flex;justify-content:center;gap:6px}.nav-core a{color:#EEF2FF;text-decoration:none;border-radius:999px;padding:8px 12px;font-size:15px;white-space:nowrap}.nav-core a:hover,.nav-core a.active{color:#fff;background:rgba(0,212,255,.16)}.header-actions{display:flex;gap:10px}.header-cta{min-height:42px;padding:0 18px;font-size:14px}.menu-toggle{width:42px;height:42px;border:1px solid rgba(255,255,255,.18);border-radius:14px;background:rgba(255,255,255,.08);display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer}.menu-toggle span{width:18px;height:2px;border-radius:99px;background:#fff}.mobile-menu-toggle{display:none}.drawer-overlay{position:fixed;inset:0;z-index:10000;background:rgba(4,8,24,.62);opacity:0;visibility:hidden;transition:.25s}.drawer-overlay.open{opacity:1;visibility:visible}.site-drawer{position:fixed;right:0;top:0;bottom:0;z-index:10001;width:min(390px,92vw);padding:24px;background:#fff;transform:translateX(104%);transition:.3s;overflow-y:auto;box-shadow:-24px 0 56px rgba(9,16,52,.22)}.site-drawer.open{transform:none}.drawer-head{display:flex;align-items:center;justify-content:space-between}.drawer-brand{display:flex;align-items:center;gap:10px;color:var(--title);font-size:20px;font-weight:900;text-decoration:none}.drawer-brand img{max-width:46px;max-height:42px;object-fit:contain}.drawer-close{width:42px;height:42px;border:0;border-radius:14px;background:#EEF1FF;color:var(--title);font-size:26px;cursor:pointer}.drawer-intro{color:var(--muted);font-size:14px;margin:20px 0}.drawer-nav{display:grid;grid-template-columns:1fr 1fr;gap:10px}.drawer-nav a{display:flex;justify-content:space-between;padding:12px 14px;border-radius:14px;background:#F6F7FF;text-decoration:none;font-weight:700}.drawer-nav a:hover,.drawer-nav a.active{background:linear-gradient(135deg,#EEF0FF,#EAFBFF);color:var(--primary)}.drawer-service-links{display:flex;flex-wrap:wrap;gap:10px 14px;margin-top:22px;padding-top:20px;border-top:1px solid var(--border)}.drawer-service-links a{color:var(--primary);font-size:14px;font-weight:700;text-decoration:none}
.hero{position:relative;overflow:hidden;padding:82px 0 72px;background:radial-gradient(circle at 15% 12%,rgba(122,92,255,.22),transparent 28%),radial-gradient(circle at 88% 28%,rgba(0,212,255,.18),transparent 26%),linear-gradient(145deg,#F8F4FF,#EFF8FF 52%,#FFF7FB)}.hero-grid{display:grid;grid-template-columns:1.03fr .97fr;align-items:center;gap:54px}.hero-eyebrow{display:inline-flex;align-items:center;gap:10px;padding:8px 14px;border:1px solid var(--border);border-radius:999px;background:rgba(255,255,255,.72);color:var(--primary);font-weight:800;font-size:14px}.hero-eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 6px rgba(0,212,255,.12)}.hero h1{margin:20px 0 8px;color:var(--title);font-size:clamp(54px,7vw,86px);line-height:.98;letter-spacing:-.06em}.hero-subtitle{margin:0 0 20px;color:var(--violet);font-size:clamp(25px,3vw,38px);font-weight:900;line-height:1.25}.hero-copy{margin:0;color:var(--muted);font-size:17px}.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.hero-points span{padding:8px 13px;border-radius:999px;background:rgba(255,255,255,.8);border:1px solid var(--border);font-weight:700;font-size:14px}.hero-visual{position:relative;min-height:520px;display:flex;align-items:center;justify-content:center}.hero-visual:before{content:"";position:absolute;inset:8% 7%;border-radius:40px;background:linear-gradient(145deg,rgba(91,108,255,.24),rgba(0,212,255,.16),rgba(217,79,112,.14));transform:rotate(4deg)}.hero-visual img{position:relative;z-index:1;width:100%;max-height:520px;object-fit:contain;filter:drop-shadow(0 28px 34px rgba(25,43,91,.18))}.floating-chip{position:absolute;z-index:2;padding:12px 16px;border-radius:16px;background:rgba(255,255,255,.92);box-shadow:0 16px 34px rgba(25,43,91,.15);font-size:14px;font-weight:800}.floating-chip.one{left:0;top:18%;color:var(--violet)}.floating-chip.two{right:0;bottom:16%;color:var(--rose)}
.highlight-strip{position:relative;margin-top:-24px;z-index:3}.highlight-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:18px;border:1px solid var(--border);border-radius:26px;background:rgba(255,255,255,.95);box-shadow:var(--shadow)}.highlight-item{padding:18px;border-radius:18px;background:linear-gradient(145deg,#fff,#F6F8FF)}.highlight-item b{display:block;color:var(--title);font-size:18px}.highlight-item p{margin:5px 0 0;color:var(--muted);font-size:14px;line-height:1.65}.channel-pills{display:flex;flex-wrap:wrap;gap:12px}.channel-pill{flex:1 1 180px;min-height:112px;padding:18px;border-radius:20px;border:1px solid var(--border);background:#fff;text-decoration:none;box-shadow:0 14px 34px rgba(25,43,91,.08);transition:.25s}.channel-pill:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.channel-pill strong{display:block;color:var(--title);margin-bottom:6px}.channel-pill span{display:block;color:var(--muted);font-size:14px;line-height:1.55}
.media-split{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}.media-split.reverse .media-visual{order:2}.media-visual{padding:22px;border-radius:30px;background:linear-gradient(145deg,#EEF0FF,#EAFBFF);min-height:390px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-visual img{width:100%;max-height:430px;object-fit:contain;filter:drop-shadow(0 20px 26px rgba(25,43,91,.16))}.media-copy h2{margin:12px 0 18px;color:var(--title);font-size:clamp(30px,4vw,46px);line-height:1.18}.media-copy p{color:var(--muted);margin:0 0 14px}.feature-list,.service-points{display:grid;gap:10px;margin:20px 0;padding:0;list-style:none}.feature-list li{display:grid;grid-template-columns:36px 1fr;gap:12px}.feature-list i{display:flex;width:36px;height:36px;align-items:center;justify-content:center;border-radius:12px;background:#EEF0FF;color:var(--primary);font-style:normal;font-weight:900}.feature-list strong{display:block;color:var(--title)}.feature-list span{display:block;color:var(--muted);font-size:14px}.service-points li{position:relative;padding-left:22px;font-size:14px}.service-points li:before{content:"";position:absolute;left:0;top:.7em;width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,var(--violet),var(--cyan))}
.two-card-grid,.three-card-grid,.review-grid,.faq-grid,.page-feedback{display:grid;gap:22px}.two-card-grid{grid-template-columns:1fr 1fr}.three-card-grid{grid-template-columns:repeat(3,1fr)}.zone-card{padding:24px;overflow:hidden}.zone-card img{width:100%;max-height:280px;object-fit:contain;margin-bottom:20px;border-radius:18px;background:#F5F7FF}.zone-card h3{margin:0 0 10px;color:var(--title);font-size:25px}.zone-card p{margin:0 0 12px;color:var(--muted)}.safety-panel{display:grid;grid-template-columns:1fr 1fr;gap:22px}.safety-card{padding:28px;border-radius:28px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);display:grid;grid-template-columns:135px 1fr;align-items:center;gap:22px}.safety-card img{width:135px;height:135px;object-fit:contain;border-radius:24px;background:#F4F6FF}.safety-card h3{margin:0 0 8px;color:var(--title);font-size:25px}.safety-card p{margin:0 0 12px;color:var(--muted)}.review-grid{grid-template-columns:repeat(3,1fr)}.review-card{padding:24px}.review-stars{color:var(--gold);letter-spacing:.18em}.review-card blockquote{margin:12px 0 18px}.review-card footer{background:transparent;color:var(--muted);font-size:14px}.faq-grid{grid-template-columns:1fr 1fr}.faq-item{overflow:hidden}.faq-item summary{list-style:none;cursor:pointer;padding:20px 22px;color:var(--title);font-weight:900}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";float:right;color:var(--primary)}.faq-item[open] summary:after{content:"−"}.faq-item p{margin:0;padding:0 22px 22px;color:var(--muted)}.notice-band{border-radius:28px;padding:34px;background:linear-gradient(135deg,#192341,#11182F);color:#EEF2FF;display:grid;grid-template-columns:1fr auto;align-items:center;gap:30px;box-shadow:0 24px 50px rgba(11,16,36,.2)}.notice-band h2{color:#fff;margin:0 0 8px;font-size:30px}.notice-band p{margin:0;color:#C6CEE8}.notice-band .ghost-btn{border-color:rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff}
.sub-hero{padding:72px 0 54px;background:radial-gradient(circle at 15% 20%,rgba(122,92,255,.2),transparent 26%),radial-gradient(circle at 90% 18%,rgba(0,212,255,.15),transparent 26%),linear-gradient(145deg,#FBF7FF,#EFF8FF)}.sub-hero-grid{display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:46px}.breadcrumbs{display:flex;gap:8px;color:var(--muted);font-size:14px}.breadcrumbs a{color:var(--primary);text-decoration:none}.sub-hero h1{margin:16px 0 14px;color:var(--title);font-size:clamp(42px,6vw,66px);line-height:1.05;letter-spacing:-.04em}.sub-hero .lead{color:var(--muted);font-size:18px;margin:0}.sub-hero-visual{min-height:380px;padding:26px;border-radius:32px;background:linear-gradient(145deg,rgba(255,255,255,.82),rgba(234,247,255,.72));display:flex;align-items:center;justify-content:center;border:1px solid var(--border);box-shadow:var(--shadow)}.sub-hero-visual img{width:100%;max-height:390px;object-fit:contain}.prose-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.content-block{padding:28px}.content-block.wide{grid-column:1/-1}.content-block h2{margin:0 0 12px;color:var(--title);font-size:27px}.content-block p{margin:0 0 14px;color:var(--muted)}.page-feedback{grid-template-columns:1fr 1fr}.feedback-card{padding:26px;border-radius:22px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow)}.feedback-card p{margin:0 0 14px}.feedback-card span{color:var(--muted);font-size:14px}.page-faq{display:grid;gap:14px}.policy-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:24px}.policy-item{padding:18px;border-radius:18px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12)}.policy-item strong{display:block;color:#fff}.policy-item span{color:#C6CEE8;font-size:14px}
.site-footer{background:#0B1024;color:#EEF2FF;padding:74px 0 24px}.footer-inner{width:min(1180px,calc(100% - 40px));margin:auto;display:grid;grid-template-columns:1.7fr repeat(3,1fr);gap:40px}.footer-logo{margin-bottom:18px}.footer-brand p{color:#B9C2DE;max-width:440px}.footer-column h2{margin:0 0 14px;color:#fff;font-size:17px}.footer-column a{display:block;color:#B9C2DE;text-decoration:none;padding:5px 0}.footer-bottom{width:min(1180px,calc(100% - 40px));margin:42px auto 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:20px;color:#909BB9;font-size:13px}.footer-bottom p{margin:0}.footer-bottom div{display:flex;gap:14px}.footer-bottom a{color:#B9C2DE;text-decoration:none}.mobile-bottom-nav{display:none}
@media(max-width:1000px){.nav-core a{padding:8px 9px;font-size:14px}.hero-grid,.sub-hero-grid{gap:30px}.review-grid{grid-template-columns:1fr 1fr}.footer-inner{grid-template-columns:1.4fr 1fr 1fr}.footer-column:last-child{grid-column:2/-1}}
@media(max-width:860px){.header-inner{grid-template-columns:44px 1fr auto;min-height:66px}.mobile-menu-toggle{display:inline-flex}.desktop-menu-toggle,.nav-core{display:none}.site-logo{justify-self:center}.site-logo span{display:none}.header-actions{justify-self:end}.header-cta{min-height:38px;padding:0 14px;font-size:13px}.hero-grid,.sub-hero-grid,.media-split,.two-card-grid,.safety-panel,.prose-grid,.page-feedback{grid-template-columns:1fr}.highlight-grid{grid-template-columns:1fr 1fr}.media-split.reverse .media-visual{order:initial}.three-card-grid{grid-template-columns:1fr 1fr}.faq-grid{grid-template-columns:1fr}.notice-band{grid-template-columns:1fr}.policy-grid{grid-template-columns:1fr 1fr}.content-block.wide{grid-column:auto}.footer-inner{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-column:last-child{grid-column:auto}.footer-bottom{flex-direction:column}}
@media(max-width:620px){body{padding-bottom:74px}.container{width:min(100% - 28px,1180px)}.section{padding:62px 0}.section-head{align-items:start;flex-direction:column}.hero{padding:42px 0 52px}.hero h1{font-size:58px}.hero-subtitle{font-size:26px}.hero-copy,.sub-hero .lead{font-size:16px}.hero-visual{min-height:320px}.floating-chip{font-size:12px;padding:9px 12px}.highlight-strip{margin-top:-12px}.highlight-grid{grid-template-columns:1fr;padding:12px}.channel-pill{flex-basis:100%;min-height:auto}.media-visual{min-height:280px;padding:14px}.three-card-grid,.review-grid{grid-template-columns:1fr}.safety-card{grid-template-columns:86px 1fr;padding:20px}.safety-card img{width:86px;height:86px}.notice-band{padding:24px}.sub-hero{padding:44px 0}.sub-hero h1{font-size:42px}.sub-hero-visual{min-height:280px}.content-block{padding:22px}.policy-grid{grid-template-columns:1fr}.drawer-nav{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr}.footer-brand{grid-column:auto}.mobile-bottom-nav{position:fixed;left:10px;right:10px;bottom:10px;z-index:9000;display:grid;grid-template-columns:repeat(4,1fr);padding:8px;border-radius:20px;background:rgba(11,16,36,.95);backdrop-filter:blur(12px);box-shadow:0 16px 36px rgba(11,16,36,.28)}.mobile-bottom-nav a{display:flex;flex-direction:column;align-items:center;color:#AFB8D3;font-size:12px;text-decoration:none;border-radius:14px;padding:6px 4px}.mobile-bottom-nav a span{font-size:18px}.mobile-bottom-nav a.active{color:#fff;background:rgba(91,108,255,.3)}}