:root{--ink: #0f2a33;--ink-soft: #1a3d4a;--paper: #f3f6f4;--paper-deep: #e4ebe7;--accent: #c45c26;--accent-hover: #a84c1d;--line: rgba(15, 42, 51, .12);--muted: #5a6f76;--white: #ffffff;--font-display: "Source Serif 4", "Noto Serif SC", "Songti SC", serif;--font-body: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", sans-serif;--max: 1120px}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--paper);line-height:1.65;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{color:inherit;text-decoration-thickness:1px;text-underline-offset:.2em}a:hover{color:var(--accent)}h1,h2,h3{font-family:var(--font-display);line-height:1.25;font-weight:600;margin:0 0 .6em}p{margin:0 0 1em}.container{width:min(100% - 2.5rem,var(--max));margin-inline:auto}.site-header{position:sticky;top:0;z-index:20;backdrop-filter:blur(10px);background:#f3f6f4e0;border-bottom:1px solid var(--line)}.site-header__inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:4rem}.brand{font-family:var(--font-display);font-size:1.35rem;font-weight:700;letter-spacing:.01em;text-decoration:none}.brand span{color:var(--accent)}.nav{display:flex;align-items:center;gap:1.25rem;flex-wrap:wrap}.nav a{text-decoration:none;font-size:.95rem;color:var(--ink-soft)}.nav a:hover{color:var(--accent)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;border:1px solid transparent;border-radius:.4rem;padding:.75rem 1.25rem;font:inherit;font-weight:600;text-decoration:none;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}.btn:hover{transform:translateY(-1px);color:inherit}.btn-primary{background:var(--accent);color:var(--white)}.btn-primary:hover{background:var(--accent-hover);color:var(--white)}.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}.btn-ghost:hover{border-color:var(--ink);color:var(--ink)}.hero{position:relative;min-height:min(88vh,720px);display:grid;align-items:end;overflow:hidden;color:var(--white);background:linear-gradient(120deg,#0f2a33eb,#0f2a338c 45%,#0f2a3340),radial-gradient(circle at 80% 20%,rgba(196,92,38,.35),transparent 40%),linear-gradient(160deg,#163943,#0f2a33 55%,#244a56)}.hero__bg{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px;mask-image:linear-gradient(to bottom,black 40%,transparent 100%);animation:grid-drift 18s linear infinite}@keyframes grid-drift{0%{transform:translateY(0)}to{transform:translateY(48px)}}.hero__content{position:relative;padding:5.5rem 0 4rem}.hero__brand{font-family:var(--font-display);font-size:clamp(2.8rem,7vw,4.8rem);letter-spacing:-.02em;margin-bottom:.4rem;animation:rise .8s ease both}.hero__brand span{color:#f0a574}.hero__lead{max-width:34rem;font-size:clamp(1.1rem,2.4vw,1.35rem);color:#ffffffe0;margin-bottom:1.75rem;animation:rise .8s ease .12s both}.hero__actions{display:flex;flex-wrap:wrap;gap:.75rem;animation:rise .8s ease .22s both}@keyframes rise{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.section{padding:4.5rem 0}.section--muted{background:var(--paper-deep)}.section__head{max-width:40rem;margin-bottom:2rem}.section__head p{color:var(--muted)}.feature-list{display:grid;gap:1.5rem;list-style:none;padding:0;margin:0}@media(min-width:768px){.feature-list{grid-template-columns:repeat(3,1fr)}}.feature-list li{padding-top:1rem;border-top:1px solid var(--line)}.feature-list h3{font-size:1.25rem}.feature-list p{color:var(--muted);margin:0}.link-rows{display:grid;gap:0}.link-rows a{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;padding:1.1rem 0;border-bottom:1px solid var(--line);text-decoration:none}.link-rows a:first-child{border-top:1px solid var(--line)}.link-rows strong{font-size:1.15rem}.link-rows span{color:var(--muted);font-size:.95rem}.prose{max-width:42rem}.prose h2{margin-top:2rem}.prose ul{padding-left:1.2rem;color:var(--muted)}.price-note{color:var(--muted);margin-bottom:1.5rem}.site-footer{border-top:1px solid var(--line);padding:2.5rem 0;color:var(--muted);font-size:.92rem}.site-footer__inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem}.site-footer a{color:var(--muted)}.guide-meta{color:var(--muted);font-size:.92rem;margin-bottom:1.5rem}