:root{--red:#d7333a;--ink:#20242c;--muted:#6e7480;--line:#e8eaee;--soft:#f6f7f9;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#fff;line-height:1.75}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{width:min(var(--max),calc(100% - 34px));margin:auto}.topnote{background:#20242c;color:#fff;font-size:13px;padding:7px 0;text-align:center}.topnote a{color:#fff;text-decoration:underline}.header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(9px)}.nav{height:68px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:800;font-size:22px}.brand b{color:var(--red)}.menu{display:flex;gap:26px;font-size:15px}.menu a:hover,.active{color:var(--red)}.hero{padding:72px 0 45px;background:linear-gradient(180deg,#fff 0,#fafafa 100%)}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:center}.eyebrow{font-size:13px;letter-spacing:.08em;color:var(--red);font-weight:700;text-transform:uppercase}.hero h1{font-size:48px;line-height:1.14;margin:12px 0 18px}.lead{font-size:18px;color:var(--muted);max-width:720px}.actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border-radius:10px;border:1px solid var(--line);font-weight:700}.btn.primary{background:var(--red);color:#fff;border-color:var(--red)}.hero-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 18px 48px rgba(24,29,38,.08)}.mock{display:grid;grid-template-columns:1fr 1fr;gap:12px}.mock>div{background:var(--soft);border-radius:14px;padding:18px;height:220px}.mock small{color:var(--muted)}.mock p{margin:18px 0}.section{padding:56px 0}.section.alt{background:var(--soft)}.section h2{font-size:30px;margin:0 0 8px}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:24px}.section-head p{margin:0;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.2s}.card:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(30,36,48,.08)}.card .cover{aspect-ratio:12/7;object-fit:cover;width:100%;background:#f7f8fb}.card-body{padding:18px}.meta{font-size:13px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}.card h3{font-size:18px;line-height:1.45;margin:8px 0}.card p{color:var(--muted);font-size:14px;margin:8px 0 0}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.feature{border:1px solid var(--line);border-radius:16px;padding:22px;background:#fff}.feature h3{margin:10px 0 6px}.feature p{color:var(--muted);margin:0}.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;padding:42px 0}.article{min-width:0}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:16px}.article h1{font-size:38px;line-height:1.25;margin:8px 0 12px}.article .heroimg{border-radius:18px;margin:24px 0;aspect-ratio:12/7;background:#f7f8fb}.article h2{font-size:25px;margin-top:34px}.article h3{font-size:19px;margin-top:24px}.article p,.article li{font-size:16px;color:#343941}.callout{border-left:4px solid var(--red);background:#fff7f7;padding:14px 18px;border-radius:0 10px 10px 0}.sidebar{position:sticky;top:94px;align-self:start}.widget{border:1px solid var(--line);border-radius:14px;padding:18px;margin-bottom:18px}.widget h3{margin:0 0 12px;font-size:17px}.widget a{display:block;padding:7px 0;color:#454b55}.widget a:hover{color:var(--red)}.pagination{display:flex;gap:8px;justify-content:center;padding:30px 0}.pagination a,.pagination span{min-width:38px;padding:7px 10px;text-align:center;border:1px solid var(--line);border-radius:8px}.pagination .current{background:var(--red);border-color:var(--red);color:#fff}.download-hero{padding:55px 0;background:#20242c;color:#fff}.download-hero h1{font-size:44px}.download-hero p{color:#c9cdd5;max-width:760px}.download-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.download-card{border:1px solid var(--line);border-radius:18px;padding:24px;background:#fff}.download-card img{border-radius:14px;margin-bottom:18px}.download-card h2{font-size:24px}.download-card p{color:var(--muted)}.faq details{border-top:1px solid var(--line);padding:14px 0}.faq summary{font-weight:700;cursor:pointer}.footer{background:#20242c;color:#c8cbd2;padding:46px 0 26px;margin-top:40px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:28px}.footer h3{color:#fff}.footer a{display:block;padding:5px 0}.copy{border-top:1px solid #343942;margin-top:30px;padding-top:18px;font-size:13px}.notfound{text-align:center;padding:100px 20px}.notfound b{font-size:92px;color:var(--red)}
@media(max-width:900px){.hero-grid,.layout,.download-grid{grid-template-columns:1fr}.grid,.feature-grid{grid-template-columns:repeat(2,1fr)}.sidebar{position:static}.hero h1{font-size:38px}.article h1{font-size:31px}.menu{gap:12px;font-size:14px}}
@media(max-width:620px){.grid,.feature-grid,.footer-grid{grid-template-columns:1fr}.menu a:nth-child(n+3){display:none}.hero{padding-top:46px}.hero h1{font-size:33px}.article h1{font-size:28px}.section{padding:42px 0}.mock>div{height:180px}}

/* Real-photography rendering */
.hero-photo{display:block;width:100%;height:auto;aspect-ratio:12/10;object-fit:cover;border-radius:16px;background:#f7f8fb}.article .heroimg{display:block;width:100%;max-height:560px;object-fit:cover}.card .cover,.download-card img{object-fit:cover}.photo-credit{font-size:.9rem;color:#64748b}@media(max-width:620px){.hero-photo{height:auto;aspect-ratio:4/3}}