:root{--ink:#18363a;--deep:#123139;--muted:#60776e;--paper:#f6f7f2;--card:#fffefa;--line:#dce7dc;--green:#28664f;--copper:#bd704d;--shadow:0 18px 48px rgba(19,53,48,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--green)}button,input,select{font:inherit}button{cursor:pointer}:focus-visible{outline:3px solid #80b89b;outline-offset:3px}.wrap{width:min(1160px,calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,254,250,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.nav{height:74px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:inline-flex;align-items:center;gap:11px;font-weight:800;font-size:21px;letter-spacing:.04em;color:var(--ink);text-decoration:none;white-space:nowrap}.brand small{display:block;font-size:9px;letter-spacing:.18em;color:var(--green);line-height:1}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:var(--deep);color:#e8f5e9;font-family:serif}.nav nav,.nav-actions{display:flex;align-items:center;gap:22px}.nav nav a,.nav nav summary,.quiet{color:var(--ink);font-size:14px;text-decoration:none;font-weight:600;cursor:pointer}.nav nav a:hover,.quiet:hover{color:var(--green)}.nav details{position:relative}.nav summary{list-style:none}.nav summary::-webkit-details-marker{display:none}.nav summary:after{content:'⌄';padding-left:5px}.nav-menu{position:absolute;top:35px;left:-20px;min-width:200px;padding:13px;display:grid;gap:5px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.nav-menu a{padding:8px 10px;border-radius:7px}.nav-menu a:hover{background:#edf5ed}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:11px 21px;background:var(--deep);border:1px solid var(--deep);border-radius:10px;color:#fff;text-decoration:none;font-size:15px;font-weight:700;box-shadow:0 9px 20px #12313922;transition:.2s}.button:hover{background:var(--green);transform:translateY(-1px)}.button.small{min-height:39px;padding:7px 15px;font-size:13px}.button.ghost{background:transparent;color:var(--deep)}.button.light{background:#f3faef;color:var(--deep);border-color:#f3faef}.eyebrow{display:block;color:var(--green);font-size:11px;font-weight:800;letter-spacing:.2em;text-transform:uppercase}.hero{padding:88px 0 72px;background:radial-gradient(circle at 83% 30%,#dcecdf 0,transparent 35%),linear-gradient(130deg,#f6f7f2,#edf4ed);border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:52px;align-items:center}.hero h1{font-size:clamp(40px,5.5vw,72px);line-height:1.15;letter-spacing:-.05em;margin:17px 0 22px;font-weight:700}.hero h1 em{font-family:Georgia,"Songti SC",serif;color:var(--green);font-style:normal}.hero p{max-width:630px;color:var(--muted);font-size:18px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero-note{font-size:12px!important;margin-top:18px}.hero-visual{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:23px;box-shadow:var(--shadow);transform:rotate(1deg)}.visual-top{display:flex;justify-content:space-between;font-size:11px;letter-spacing:.14em;color:var(--green);border-bottom:1px solid var(--line);padding-bottom:12px}.visual-step{display:flex;justify-content:space-between;gap:10px;border-bottom:1px solid var(--line);padding:18px 0;font-size:15px}.visual-step b{color:var(--green)}.visual-step:last-child{border:0}.section{padding:74px 0}.section h2{font-size:clamp(28px,3vw,40px);line-height:1.25;margin:14px 0 16px;letter-spacing:-.035em}.section-lead{color:var(--muted);max-width:760px}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px;margin-top:29px}.card{display:flex;flex-direction:column;gap:12px;min-height:140px;padding:23px;background:var(--card);border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);color:var(--ink);text-decoration:none}.card:hover{border-color:#95c5a6;transform:translateY(-2px)}.card strong{font-size:19px}.card span{color:var(--muted);font-size:14px}.workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:30px 0}.workflow div{padding:16px;background:#e8f1e8;border-radius:10px;font-weight:700;font-size:13px}.workflow div span{display:block;font-size:11px;color:var(--green);letter-spacing:.1em}.breadcrumb{display:flex;gap:10px;padding:23px 0 0;color:var(--muted);font-size:13px}.breadcrumb a{text-decoration:none}.article-shell{max-width:860px}.article-shell h1{font-size:clamp(35px,4vw,52px);line-height:1.2;margin:27px 0}.article-shell .lead{font-size:19px;color:#3a6351}.article-shell h2{font-size:28px;margin-top:48px}.article-shell p,.article-shell li{line-height:1.9}.article-shell table,.data-table{width:100%;border-collapse:collapse;background:var(--card);margin:22px 0}.article-shell th,.article-shell td,.data-table th,.data-table td{padding:13px;border:1px solid var(--line);text-align:left;vertical-align:top}.article-shell th,.data-table th{background:#eaf3e9}.callout{padding:20px;border-left:4px solid var(--green);background:#edf5ed;border-radius:0 10px 10px 0}.cta-panel{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:38px;background:var(--deep);color:#fff;border-radius:20px;margin:55px 0}.cta-panel .eyebrow{color:#9fd4ae}.cta-panel h2{margin:8px 0}.cta-panel p{margin:0;color:#bcd5c9}.faq-list{display:grid;gap:10px;margin-top:25px}.faq details{padding:16px 20px;background:var(--card);border:1px solid var(--line);border-radius:10px}.faq summary{font-weight:700;cursor:pointer}.faq p{color:var(--muted)}.tool-panel{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:27px;margin:30px 0;box-shadow:var(--shadow)}.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.field{display:grid;gap:7px;font-weight:600}.field input,.field select{width:100%;min-height:43px;padding:8px 11px;border:1px solid #c7d9ce;border-radius:8px;background:#fff}.result{padding:19px;background:#edf5ed;border-radius:10px;margin-top:20px;overflow-wrap:anywhere;font-weight:700}.site-footer{background:#102d32;color:#d4e6da;padding:55px 0 18px}.site-footer a{color:#d4e6da;text-decoration:none}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:25px}.footer-grid>div{display:flex;flex-direction:column;gap:9px}.footer-grid .brand{color:white}.footer-grid p{font-size:13px;color:#a5c1b3}.footer-grid strong{color:#fff}.footer-bottom{border-top:1px solid #42615c;padding-top:15px;margin-top:42px;font-size:12px;color:#a5c1b3}@media(max-width:850px){.nav{height:auto;min-height:65px;flex-wrap:wrap;padding:10px 0}.nav nav{order:3;width:100%;overflow-x:auto;gap:14px;padding-bottom:5px}.nav-actions .quiet{display:none}.hero-grid{grid-template-columns:1fr}.hero-visual{max-width:560px}.card-grid{grid-template-columns:repeat(2,1fr)}.workflow{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.wrap{width:min(100% - 28px,1160px)}.nav nav{gap:12px}.nav nav a,.nav nav summary{white-space:nowrap;font-size:12px}.hero{padding:48px 0}.hero h1{font-size:42px}.hero p{font-size:16px}.section{padding:49px 0}.card-grid,.form-grid{grid-template-columns:1fr}.workflow{grid-template-columns:repeat(2,1fr)}.cta-panel{display:block;padding:27px}.cta-panel .button{margin-top:20px}.footer-grid{grid-template-columns:repeat(2,1fr)}}
.nav-menu{grid-template-columns:repeat(2,minmax(180px,1fr));min-width:430px;max-height:min(70vh,620px);overflow-y:auto}.nav-menu a{white-space:normal;line-height:1.35}@media(max-width:850px){.nav nav{overflow:visible;flex-wrap:wrap}.nav-menu{left:0;min-width:min(90vw,430px);grid-template-columns:repeat(2,minmax(120px,1fr));max-height:60vh}}
.preview-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:26px 0}.preview-grid figure,.workbench-shot figure{margin:0}.preview-grid img,.workbench-shot img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:var(--shadow)}.preview-grid figcaption,.workbench-shot figcaption{margin-top:10px;color:var(--muted);font-size:14px;line-height:1.6}.workbench-shot{padding-top:18px}@media(max-width:600px){.preview-grid{grid-template-columns:1fr}}
.nav-heading{grid-column:1/-1;padding:7px 10px 0;color:var(--muted);font-size:11px;font-weight:700}.nav nav{gap:16px}
.article-figure{margin:28px 0}.article-figure img{display:block;max-width:100%;width:100%;height:auto;max-height:540px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:12px}.article-figure figcaption{margin-top:9px;color:var(--muted);font-size:13px}
.home-preview-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:26px}.home-preview-grid a{display:block;background:#fff;color:var(--ink);text-decoration:none;border:1px solid var(--line);border-radius:12px;padding:10px}.home-preview-grid img{display:block;width:100%;height:260px;object-fit:cover;object-position:top;border:1px solid var(--line)}.home-preview-grid strong{display:block;margin-top:9px;font-size:13px}@media(max-width:850px){.home-preview-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.hero-resource-links,.resource-link-row{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:22px;font-size:14px}.resource-all{margin-top:24px;font-weight:700}.resource-all a,.resource-link-row a{text-underline-offset:4px}.footer-grid{grid-template-columns:1.2fr repeat(4,minmax(0,1fr))}.nav-menu{right:0;left:auto}.nav nav>details{position:static}.nav nav{position:relative}.nav-menu{left:auto;right:0;max-width:100%}section[id],h2[id]{scroll-margin-top:110px}@media(max-width:850px){.nav-menu{left:0;right:0;min-width:0;width:100%}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.footer-grid{gap:24px 16px}.footer-grid a{overflow-wrap:anywhere}.hero-resource-links{gap:10px 20px}}