:root{--brand: #e8590c;--brand-dark: #c2410c;--brand-soft: #fff4ec;--ink: #1f2937;--muted: #6b7280;--faint: #9ca3af;--line: #e5e7eb;--bg: #ffffff;--bg-soft: #f8fafc;--green: #059669;--radius: 12px;--shadow: 0 1px 3px rgba(31, 41, 55, .06), 0 8px 24px rgba(31, 41, 55, .06);--container: 1120px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}ul,ol{list-style:none}.container{max-width:var(--container);margin:0 auto;padding:0 24px}.section{padding:72px 0}.section--soft{background:var(--bg-soft)}.section-head{max-width:640px;margin:0 auto 48px;text-align:center}.section-tag{display:inline-block;font-size:14px;font-weight:600;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 14px;margin-bottom:16px}.section-title{font-size:32px;font-weight:700;line-height:1.3;letter-spacing:.5px}.section-sub{margin-top:12px;font-size:17px;color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:16px;font-weight:600;border-radius:10px;padding:12px 28px;border:1px solid transparent;cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}.btn--primary{background:var(--brand);color:#fff}.btn--primary:hover{background:var(--brand-dark)}.btn--ghost{background:#fff;color:var(--ink);border-color:var(--line)}.btn--ghost:hover{border-color:var(--brand);color:var(--brand)}.btn--sm{font-size:14px;padding:8px 20px;border-radius:8px}.img-ph{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;border:1.5px dashed #f0b28a;border-radius:var(--radius);background:repeating-linear-gradient(-45deg,#fff7f0 0,#fff7f0 14px,#fdf0e4 14px,#fdf0e4 28px);color:var(--brand-dark);min-height:120px;padding:16px;text-align:center}.img-ph__code{font-size:12px;font-weight:700;letter-spacing:1px;opacity:.65}.img-ph__label{font-size:13px;line-height:1.5;max-width:260px}.nav{position:sticky;top:0;z-index:100;background:#ffffffeb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.nav__inner{display:flex;align-items:center;gap:32px;height:64px}.nav__brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700}.nav__logo{width:30px;height:30px;border-radius:8px;background:var(--brand);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700}.nav__links{display:flex;gap:28px;margin-left:auto}.nav__links a{font-size:15px;color:var(--muted);transition:color .15s ease}.nav__links a:hover{color:var(--brand)}.nav__cta{display:flex;gap:12px;align-items:center}@media (max-width: 760px){.nav__links{display:none}.nav__inner{gap:12px}}.footer{border-top:1px solid var(--line);background:var(--bg-soft);padding:40px 0 32px;color:var(--muted);font-size:14px}.footer__inner{display:flex;flex-wrap:wrap;gap:24px 64px;justify-content:space-between}.footer__brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--ink)}.footer__links{display:flex;gap:24px}.footer__links a:hover{color:var(--brand)}.footer__beian{margin-top:24px;padding-top:16px;border-top:1px solid var(--line);color:var(--faint);font-size:13px;display:flex;flex-wrap:wrap;gap:8px 24px}.check-list{display:flex;flex-direction:column;gap:14px}.check-list li{display:flex;gap:10px;font-size:15px;line-height:1.6}.check-list li:before{content:"";flex:none;width:20px;height:20px;margin-top:4px;border-radius:50%;background:var(--brand-soft) center / 12px no-repeat;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e8590c' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 12l5 5L20 6'/%3E%3C/svg%3E")}@media (max-width: 760px){.section{padding:48px 0}.section-title{font-size:24px}.section-sub{font-size:15px}}