:root{--blue:#1769ef;--navy:#132238;--teal:#12b8a6;--orange:#ff7b2f;--muted:#65738a;--line:#e6ebf2;--wash:#f5f8fc;--white:#fff;--shadow:0 18px 55px rgba(31,61,97,.1)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--navy);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;background:#fff}button,a{font:inherit}a{color:inherit;text-decoration:none}.wrap{width:min(1180px,calc(100% - 48px));margin:auto}.site-header{height:88px;padding:0 max(24px,calc((100% - 1180px)/2));display:flex;align-items:center;justify-content:space-between;position:relative;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);z-index:20;border-bottom:1px solid rgba(230,235,242,.7)}.brand{display:flex;align-items:center;gap:13px}.brand-mark,.avatar{display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,#2878ff,#0c54d4);font-weight:900;box-shadow:0 8px 22px rgba(23,105,239,.25)}.brand-mark{width:52px;height:52px;border-radius:17px;font-size:25px}.brand strong{font-size:23px;display:block}.brand small{display:block;color:#8792a4;margin-top:2px}.nav-links{display:flex;gap:34px;font-weight:650}.nav-links a{position:relative}.nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:2px;background:var(--blue);transition:.2s}.nav-links a:hover:after{right:0}.menu-button{display:none;border:0;background:none;padding:8px}.menu-button i{display:block;width:25px;height:2px;background:var(--navy);margin:5px;border-radius:2px}
.hero{min-height:610px;padding:72px 0 54px;display:grid;grid-template-columns:.92fr 1.08fr;gap:64px;align-items:center}.eyebrow,.section-heading span,.safety-intro>span,.about-card span{color:var(--blue);font-size:12px;letter-spacing:2px;font-weight:800}.hero h1{font-size:clamp(43px,5vw,70px);line-height:1.12;letter-spacing:-3px;margin:18px 0 24px}.hero h1 em{font-style:normal;color:var(--blue)}.hero-copy>p{max-width:540px;font-size:18px;line-height:1.9;color:var(--muted)}.primary-button{display:inline-flex;align-items:center;gap:28px;background:var(--blue);color:#fff;border-radius:14px;padding:16px 22px;margin-top:14px;font-weight:750;box-shadow:0 12px 28px rgba(23,105,239,.25)}.primary-button span{font-size:22px}.hero-facts{display:flex;gap:22px;margin-top:28px;color:#6f7d91;font-size:13px}.hero-facts span:before{content:"✓";color:var(--teal);margin-right:6px;font-weight:900}.hero-art{height:490px;border-radius:38px;position:relative;overflow:hidden;background:linear-gradient(#b8e3ff 0 46%,#dff3dd 46%);box-shadow:var(--shadow)}.sun{position:absolute;width:130px;height:130px;border-radius:50%;background:#fff5c9;right:45px;top:45px;box-shadow:0 0 60px #fff}.mountain{position:absolute;bottom:0;clip-path:polygon(50% 0,100% 100%,0 100%)}.mountain-a{width:480px;height:310px;background:#7db7a8;left:-100px}.mountain-b{width:500px;height:250px;background:#50977f;right:-170px}.scene{position:absolute;display:flex;align-items:center;gap:13px;background:rgba(255,255,255,.92);padding:13px 18px;border:1px solid rgba(255,255,255,.9);border-radius:18px;box-shadow:0 12px 35px rgba(20,55,73,.15)}.scene b{font-size:36px}.scene span{font-weight:800}.scene small{display:block;font-weight:500;color:var(--muted);margin-top:4px}.scene-hike{left:28px;bottom:40px}.scene-sport{right:24px;top:90px}.scene-study{right:55px;bottom:55px}.section{padding:84px 0}.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:34px}.section-heading h2,.safety h2,.about h2{font-size:34px;margin:8px 0 0}.section-heading p{color:var(--muted)}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.topic{border:1px solid var(--line);background:#fff;text-align:left;border-radius:22px;padding:24px;cursor:pointer;transition:.25s}.topic:hover,.topic.active{transform:translateY(-5px);box-shadow:var(--shadow);border-color:transparent}.topic i{display:grid;place-items:center;width:58px;height:58px;border-radius:18px;font-style:normal;font-size:27px;margin-bottom:22px}.topic .blue{background:#e9f2ff}.topic .green{background:#e5f8f4}.topic .indigo{background:#eceaff}.topic .orange{background:#fff0e5}.topic b{display:block;font-size:19px}.topic small{color:var(--muted);display:block;margin-top:8px}.featured{background:var(--wash)}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.article-card{background:#fff;border-radius:24px;overflow:hidden;box-shadow:0 10px 30px rgba(34,59,90,.07);transition:.25s}.article-card:hover{transform:translateY(-6px)}.cover{height:225px;padding:24px;color:#fff;position:relative;overflow:hidden}.cover span{font-size:12px;padding:7px 10px;border-radius:20px;background:rgba(255,255,255,.18)}.cover b{display:block;font-size:26px;line-height:1.35;margin-top:30px}.cover i{font-size:92px;position:absolute;right:20px;bottom:-12px;filter:drop-shadow(0 10px 10px rgba(0,0,0,.12));font-style:normal}.cover-safe{background:linear-gradient(145deg,#367df7,#17439b)}.cover-hike{background:linear-gradient(145deg,#65b694,#206e5e)}.cover-sport{background:linear-gradient(145deg,#ff9b55,#ea5b29)}.article-body{padding:24px}.article-body>small{color:var(--blue)}.article-body h3{font-size:21px;margin:10px 0}.article-body p{color:var(--muted);line-height:1.65;min-height:53px}.text-button{border:0;background:none;color:var(--blue);font-weight:750;padding:8px 0;cursor:pointer}.safety{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px;align-items:center}.safety-intro p{color:var(--muted);line-height:1.8}.safety-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.safety-list article{display:flex;gap:15px;padding:20px;border:1px solid var(--line);border-radius:18px}.safety-list i{display:grid;place-items:center;flex:0 0 42px;height:42px;background:#eaf2ff;color:var(--blue);border-radius:13px;font-style:normal;font-size:21px}.safety-list b,.safety-list small{display:block}.safety-list small{color:var(--muted);line-height:1.55;margin-top:6px}.about{padding-top:30px}.about-card{padding:42px;border-radius:28px;background:linear-gradient(120deg,#edf5ff,#effcf9);display:flex;gap:28px;align-items:center}.avatar{flex:0 0 84px;height:84px;border-radius:25px;font-size:35px}.about-card p{max-width:790px;color:var(--muted);line-height:1.8}footer{background:#101c2d;color:#c3cbd6;padding:36px 0;margin-top:50px}footer .wrap{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center}footer nav{display:flex;gap:24px}footer small{color:#758195}.article-dialog{width:min(680px,calc(100% - 32px));border:0;border-radius:24px;padding:42px;box-shadow:0 25px 100px rgba(0,0,0,.28)}.article-dialog::backdrop{background:rgba(14,27,44,.68);backdrop-filter:blur(4px)}.dialog-close{position:absolute;right:18px;top:14px;border:0;background:#eef2f7;width:36px;height:36px;border-radius:50%;font-size:23px;cursor:pointer}.dialog-label{color:var(--blue);font-size:13px;font-weight:800}.article-dialog h2{font-size:30px}.dialog-content{line-height:1.9;color:#536277}.dialog-content h3{color:var(--navy);margin-top:24px}
@media(max-width:800px){.wrap{width:min(100% - 32px,620px)}.site-header{height:76px;padding:0 18px}.brand-mark{width:45px;height:45px;border-radius:15px}.brand strong{font-size:20px}.brand small{font-size:11px}.menu-button{display:block}.nav-links{display:none;position:absolute;top:68px;right:16px;flex-direction:column;gap:18px;background:#fff;padding:22px;width:180px;border-radius:16px;box-shadow:var(--shadow)}.nav-links.open{display:flex}.hero{padding:42px 0 24px;grid-template-columns:1fr;gap:34px}.hero h1{font-size:44px;letter-spacing:-2px}.hero-copy>p{font-size:16px}.hero-art{height:390px;border-radius:28px}.scene{padding:10px 12px}.scene b{font-size:28px}.scene-sport{top:68px}.section{padding:58px 0}.section-heading{align-items:start}.section-heading p{display:none}.section-heading h2,.safety h2,.about h2{font-size:28px}.topic-grid{grid-template-columns:1fr 1fr}.topic{padding:18px}.topic i{margin-bottom:15px}.article-grid{grid-template-columns:1fr}.cover{height:210px}.safety{grid-template-columns:1fr;gap:25px}.safety-list{grid-template-columns:1fr}.about-card{align-items:flex-start;padding:26px;gap:18px}.avatar{flex-basis:58px;height:58px;border-radius:18px;font-size:26px}.about-card h2{font-size:23px}footer .wrap{grid-template-columns:1fr}footer nav{flex-wrap:wrap}.article-dialog{padding:34px 24px}.article-dialog h2{font-size:25px}}
footer a{color:inherit}
@media(max-width:430px){.hero h1{font-size:38px}.hero-art{height:340px}.scene span{font-size:13px}.scene small{font-size:10px}.scene-hike{left:14px;bottom:22px}.scene-study{right:14px;bottom:26px}.scene-sport{right:12px}.topic small{font-size:11px}.topic b{font-size:17px}.about-card{display:block}.avatar{margin-bottom:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.topic,.article-card{transition:none}}
.contact{padding-top:20px}.contact-card{display:grid;grid-template-columns:1fr 300px;gap:60px;align-items:center;padding:48px 60px;border:1px solid var(--line);border-radius:30px;box-shadow:var(--shadow)}.contact-copy>span{color:var(--blue);font-size:12px;letter-spacing:2px;font-weight:800}.contact-copy h2{font-size:34px;margin:8px 0 0}.contact-copy p{color:var(--muted);line-height:1.8;max-width:620px}.email-link{display:inline-flex;align-items:center;gap:14px;margin-top:16px;padding:15px 18px;border-radius:15px;background:#edf5ff;color:var(--blue)}.email-link>i{font-size:24px;font-style:normal}.email-link small,.email-link b{display:block}.email-link small{font-size:11px;color:#71839a;margin-bottom:3px}.qr-wrap{text-align:center}.qr-placeholder{width:220px;height:220px;margin:auto;display:grid;place-items:center;align-content:center;gap:10px;border:2px dashed #bfd0e5;border-radius:24px;background:#f7faff;color:#91a0b4}.qr-placeholder span{display:grid;place-items:center;width:62px;height:62px;border-radius:18px;background:var(--blue);color:#fff;font-size:28px;font-weight:900}.qr-placeholder small{font-size:12px}.qr-wrap>b,.qr-wrap>small{display:block}.qr-wrap>b{margin-top:16px}.qr-wrap>small{margin-top:5px;color:var(--muted)}
.qr-image{display:block;width:260px;height:auto;margin:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
@media(max-width:800px){.contact-card{grid-template-columns:1fr;padding:30px 24px;gap:35px}.contact-copy h2{font-size:28px}.qr-placeholder{width:210px;height:210px}}