/* ============================================================
   欧博官网 oubeofficial.com.cn
   Carbon Accounting Workbench / Carbon Ledger / Document Intelligence
   本地样式，无远程字体、无远程CSS
   ============================================================ */
:root{
  --bg:#f6f4ef;
  --bg-alt:#edeae2;
  --bg-deep:#1c2321;
  --ink:#1c2321;
  --ink-soft:#4a5350;
  --ink-mute:#727b78;
  --line:#d9d4c9;
  --line-soft:#e6e2d8;
  --teal:#0f5e56;
  --teal-deep:#0b4640;
  --teal-soft:#dcebe6;
  --blue:#1e3f8a;
  --blue-soft:#dde5f5;
  --yellow:#f2d16b;
  --yellow-soft:#fbf3d3;
  --orange:#f0b077;
  --orange-soft:#fde9d6;
  --red:#d9553a;
  --red-soft:#fbe3dc;
  --white:#fffdf9;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,"Courier New",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --radius:6px;
  --shadow:0 1px 2px rgba(28,35,33,.06),0 8px 24px rgba(28,35,33,.06);
  --wrap:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.85;overflow-x:hidden}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .6em;font-weight:700;color:var(--ink)}
h1{font-size:2rem}
h2{font-size:1.55rem}
h3{font-size:1.2rem}
h4{font-size:1.02rem}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.4em}
li{margin-bottom:.35em}
table{border-collapse:collapse;width:100%;font-size:.92rem}
th,td{border:1px solid var(--line);padding:.55rem .7rem;text-align:left;vertical-align:top}
th{background:var(--bg-alt);font-weight:600}
code,.mono{font-family:var(--mono);font-size:.9em}
small{color:var(--ink-mute)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 1.25rem}
.skip-link{position:absolute;left:-999px;top:0;background:var(--teal);color:#fff;padding:.5rem 1rem;z-index:99}
.skip-link:focus{left:0}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,244,239,.96);border-bottom:1px solid var(--line);backdrop-filter:saturate(1.2) blur(6px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:64px}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:6px;background:var(--teal);color:#fff;font-family:var(--mono);font-weight:700;letter-spacing:.02em}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:1.15rem}
.brand-text small{font-size:.72rem;color:var(--ink-mute)}
.site-nav{display:flex;flex-wrap:wrap;gap:.15rem}
.site-nav a{padding:.45rem .6rem;border-radius:4px;font-size:.9rem;color:var(--ink-soft);white-space:nowrap}
.site-nav a:hover{background:var(--bg-alt);text-decoration:none;color:var(--ink)}
.site-nav a.is-active{color:var(--teal);font-weight:600;box-shadow:inset 0 -2px 0 var(--teal)}
.nav-toggle{display:none;border:1px solid var(--line);background:var(--white);border-radius:4px;padding:.4rem .8rem;font:inherit;cursor:pointer}

/* ---------- Sections ---------- */
.section{padding:3.5rem 0}
.section-alt{background:var(--bg-alt)}
.section-deep{background:var(--bg-deep);color:#e8e5dc}
.section-deep h2,.section-deep h3{color:#fff}
.section-deep a{color:#9fd3c7}
.section-head{max-width:820px;margin-bottom:2rem}
.eyebrow{display:inline-block;font-family:var(--mono);font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--teal);margin-bottom:.5rem}
.section-deep .eyebrow{color:#9fd3c7}
.lead{font-size:1.05rem;color:var(--ink-soft)}
.section-deep .lead{color:#c9c5ba}

/* ---------- Hero ---------- */
.hero{padding:3.5rem 0 3rem;background:linear-gradient(180deg,var(--white) 0%,var(--bg) 100%);border-bottom:1px solid var(--line-soft)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:3rem;align-items:center}
.hero h1{font-size:2.2rem;margin-bottom:1rem}
.hero .hero-sub{font-size:1.02rem;color:var(--ink-soft)}
.hero-actions{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.4rem}
.btn{display:inline-block;padding:.65rem 1.15rem;border-radius:4px;font-weight:600;font-size:.95rem;border:1px solid var(--teal);color:var(--teal);background:transparent}
.btn:hover{text-decoration:none;background:var(--teal-soft)}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-deep);color:#fff}
.hero-figure{margin:0;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:.75rem;box-shadow:var(--shadow)}
.hero-figure figcaption,figure figcaption{font-size:.82rem;color:var(--ink-mute);margin-top:.5rem;line-height:1.5}
.hero-meta{display:flex;flex-wrap:wrap;gap:1.2rem;margin-top:1.4rem;padding-top:1rem;border-top:1px dashed var(--line);font-size:.85rem;color:var(--ink-mute)}
.hero-meta span strong{display:block;color:var(--ink);font-family:var(--mono);font-size:.95rem}
.page-hero{padding:3rem 0 2.5rem;background:var(--white);border-bottom:1px solid var(--line-soft)}
.page-hero h1{font-size:2rem}
.page-hero .lead{max-width:860px}
.breadcrumb{font-size:.82rem;color:var(--ink-mute);margin-bottom:.8rem}
.breadcrumb a{color:var(--ink-mute)}

/* ---------- Flow / Pipeline ---------- */
.flow{display:flex;flex-wrap:wrap;gap:.5rem;align-items:stretch;list-style:none;padding:0;margin:0}
.flow li{position:relative;flex:1 1 120px;min-width:118px;background:var(--white);border:1px solid var(--line);border-radius:4px;padding:.6rem .7rem;font-size:.86rem;line-height:1.4}
.flow li strong{display:block;font-family:var(--mono);font-size:.78rem;color:var(--blue);margin-bottom:.15rem}
.flow li::after{content:"→";position:absolute;right:-.72rem;top:50%;transform:translateY(-50%);color:var(--ink-mute);font-size:.9rem;z-index:1}
.flow li:last-child::after{content:""}
.flow-vertical{display:grid;row-gap:1rem;list-style:none;padding:0;margin:0}
.flow-vertical li{background:var(--white);border:1px solid var(--line);border-left:3px solid var(--teal);padding:.5rem .8rem;font-size:.9rem;position:relative}
.flow-vertical li+li::before{content:"↓";position:absolute;top:-1.05rem;left:.8rem;color:var(--ink-mute);font-size:.8rem}
.flow-vertical li strong{font-family:var(--mono);color:var(--blue);font-size:.82rem;margin-right:.5rem}
.flow-note{font-size:.85rem;color:var(--ink-mute);margin-top:.8rem}

/* ---------- Scope map ---------- */
.scope-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.scope-card{background:var(--white);border:1px solid var(--line);border-top:4px solid var(--teal);border-radius:var(--radius);padding:1.4rem}
.scope-card.s2{border-top-color:var(--blue)}
.scope-card.s3{border-top-color:#7a5a1e}
.scope-card h3{display:flex;align-items:baseline;gap:.5rem}
.scope-card h3 .tag{font-family:var(--mono);font-size:.75rem;background:var(--bg-alt);padding:.1rem .45rem;border-radius:3px;color:var(--ink-soft)}
.scope-card ul{padding-left:1.1rem;font-size:.92rem}
.tabs{display:flex;gap:.4rem;flex-wrap:wrap;margin-bottom:1rem}
.tab-btn{border:1px solid var(--line);background:var(--white);padding:.45rem .9rem;border-radius:4px;font:inherit;font-size:.9rem;cursor:pointer;color:var(--ink-soft)}
.tab-btn[aria-selected="true"]{background:var(--teal);color:#fff;border-color:var(--teal)}
.tab-panel[hidden]{display:none}
.tab-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem 1.4rem}

/* ---------- Feature articles ---------- */
.feature-article{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,1fr);gap:2.5rem;padding:2.5rem 0;border-top:1px solid var(--line)}
.feature-article:first-of-type{border-top:0;padding-top:0}
.feature-article.reverse figure{order:-1}
.article-meta{display:flex;flex-wrap:wrap;gap:.8rem;font-size:.8rem;color:var(--ink-mute);font-family:var(--mono);margin-bottom:.6rem}
.article-meta .cat{color:var(--teal);font-weight:600}
.article-meta .num{background:var(--ink);color:#fff;padding:0 .45rem;border-radius:3px}
.feature-article h3{font-size:1.32rem;line-height:1.45}
.feature-article figure{margin:0;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:.75rem;align-self:start;position:sticky;top:84px}
.verdict{background:var(--teal-soft);border-left:4px solid var(--teal);padding:.9rem 1.1rem;margin:1.2rem 0;font-size:.97rem}
.verdict strong{color:var(--teal-deep)}
.read-more{font-weight:600}
.read-more::after{content:" ›"}
.struct-tag{display:inline-block;font-family:var(--mono);font-size:.74rem;background:var(--blue-soft);color:var(--blue);padding:.15rem .5rem;border-radius:3px;margin-bottom:.6rem}

/* ---------- Trends ---------- */
.trend-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.trend{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem;font-size:.93rem}
.trend .num{font-family:var(--mono);color:var(--blue);font-size:.8rem;display:block;margin-bottom:.4rem}
.trend h3{font-size:1rem;margin-bottom:.5rem}
.trend p{margin:0;color:var(--ink-soft)}
.check-note{font-size:.85rem;color:var(--ink-mute);border:1px dashed var(--line);padding:.7rem 1rem;border-radius:4px;margin-top:1.4rem;background:var(--white)}

/* ---------- Observations ---------- */
.obs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.observation{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;font-size:.95rem}
.observation h3{font-size:1.08rem;line-height:1.5}
.observation .article-meta{margin-bottom:.4rem}

/* ---------- Workbench / Document viewer / Ledger ---------- */
.workbench{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:1.5rem;align-items:start}
.doc-viewer{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.doc-viewer-head{display:flex;justify-content:space-between;align-items:center;padding:.6rem .9rem;background:var(--bg-alt);font-family:var(--mono);font-size:.78rem;color:var(--ink-soft);border-bottom:1px solid var(--line)}
.doc-page{padding:1.2rem;font-family:var(--mono);font-size:.8rem;line-height:1.7;color:var(--ink-soft);background:repeating-linear-gradient(0deg,transparent,transparent 27px,#f1eee6 27px,#f1eee6 28px)}
.doc-page .hl{background:var(--yellow-soft);border-bottom:2px solid var(--yellow);color:var(--ink);padding:0 .15rem}
.doc-page .hl-blue{background:var(--blue-soft);border-bottom:2px solid var(--blue)}
.doc-page .hl-red{background:var(--red-soft);border-bottom:2px solid var(--red)}
.extract-list{list-style:none;padding:0;margin:0;font-size:.88rem}
.extract-list li{display:grid;grid-template-columns:150px 1fr auto;gap:.6rem;padding:.5rem .9rem;border-top:1px solid var(--line-soft);align-items:center}
.extract-list li[hidden]{display:none}
.extract-list li span:first-child{font-family:var(--mono);font-size:.78rem;color:var(--ink-mute)}
.demo-controls{display:flex;flex-wrap:wrap;gap:.5rem;padding:.8rem .9rem;border-top:1px solid var(--line);background:var(--bg)}
.demo-log{font-family:var(--mono);font-size:.78rem;background:var(--bg-deep);color:#cfe8e0;padding:.8rem .9rem;margin:0;min-height:5.5rem;white-space:pre-wrap;line-height:1.6}
.ledger{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.ledger-head{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;justify-content:space-between;padding:.7rem .9rem;background:var(--bg-alt);border-bottom:1px solid var(--line)}
.ledger-head strong{font-size:.95rem}
.filter-group{display:flex;flex-wrap:wrap;gap:.35rem}
.filter-btn{border:1px solid var(--line);background:var(--white);font:inherit;font-size:.78rem;padding:.25rem .6rem;border-radius:999px;cursor:pointer;color:var(--ink-soft)}
.filter-btn[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.ledger table{font-size:.82rem;min-width:760px}
.ledger th,.ledger td{border-left:0;border-right:0;white-space:nowrap}
.ledger td.num{font-family:var(--mono);text-align:right}
.ledger tr[hidden]{display:none}
.st{display:inline-block;font-family:var(--mono);font-size:.72rem;padding:.12rem .5rem;border-radius:3px;border:1px solid transparent;white-space:nowrap}
.st-actual{background:var(--teal-soft);color:var(--teal-deep);border-color:#b9d8cf}
.st-supplier{background:var(--blue-soft);color:var(--blue);border-color:#bccbe9}
.st-calculated{background:#e9e6de;color:var(--ink-soft);border-color:#d3cfc4}
.st-estimated{background:var(--yellow-soft);color:#6f5a0c;border-color:#e8d48a}
.st-proxy{background:#f3ecd9;color:#7a5a1e;border-color:#e2d3ad}
.st-missing{background:var(--orange-soft);color:#8a4b12;border-color:#f0c9a3}
.st-review{background:var(--red-soft);color:#9b3a26;border-color:#f0b7a8}
.demo-badge{display:inline-block;font-family:var(--mono);font-size:.7rem;background:var(--ink);color:#fff;padding:.05rem .45rem;border-radius:3px;vertical-align:middle;margin-left:.4rem}
.demo-note{font-size:.82rem;color:var(--ink-mute);margin-top:.6rem}

/* ---------- Lineage ---------- */
.lineage{display:flex;flex-wrap:wrap;gap:.4rem;list-style:none;padding:0;margin:0 0 .6rem;font-family:var(--mono);font-size:.76rem}
.lineage li{background:var(--white);border:1px solid var(--line);padding:.35rem .6rem;border-radius:3px;position:relative;padding-right:1.4rem;margin:0}
.lineage li::after{content:"→";position:absolute;right:.35rem;color:var(--ink-mute)}
.lineage li:last-child{padding-right:.6rem}
.lineage li:last-child::after{content:""}
.lineage li b{color:var(--blue);font-weight:600}

/* ---------- Quality ladder ---------- */
.ladder{list-style:none;padding:0;margin:0;display:grid;gap:.35rem}
.ladder li{display:grid;grid-template-columns:34px 1fr;gap:.6rem;align-items:center;padding:.55rem .8rem;border:1px solid var(--line);border-radius:4px;background:var(--white);font-size:.9rem;margin:0}
.ladder li span{font-family:var(--mono);font-size:.75rem;color:var(--ink-mute)}
.ladder li:nth-child(1){border-left:6px solid var(--teal)}
.ladder li:nth-child(2){border-left:6px solid #2f8c7e}
.ladder li:nth-child(3){border-left:6px solid var(--blue)}
.ladder li:nth-child(4){border-left:6px solid #c9a84a}
.ladder li:nth-child(5){border-left:6px solid var(--yellow)}
.ladder li:nth-child(6){border-left:6px solid var(--orange)}

/* ---------- Latest lists ---------- */
.latest-block{padding:2.5rem 0;border-top:1px solid var(--line)}
.latest-block h2{display:flex;flex-wrap:wrap;align-items:baseline;gap:.8rem}
.latest-block h2 .link-sub{font-size:.85rem;font-weight:500}
.latest-list{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.latest-list.four{grid-template-columns:repeat(2,1fr)}
.latest-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem 1.3rem;font-size:.92rem;display:flex;flex-direction:column}
.latest-item h3{font-size:1rem;line-height:1.5}
.latest-item p{color:var(--ink-soft);flex:1}
.latest-item .article-meta{margin-bottom:.3rem}

/* ---------- Q&A / definition grid ---------- */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.qa{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem 1.3rem;font-size:.93rem}
.qa h3{font-size:1rem;margin-bottom:.4rem}
.qa p{margin:0;color:var(--ink-soft)}
.qa-grid.three{grid-template-columns:repeat(3,1fr)}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-list details{background:var(--white);border:1px solid var(--line);border-radius:4px;margin-bottom:.6rem;padding:0 1.1rem}
.faq-list summary{cursor:pointer;font-weight:600;padding:.85rem 0;list-style:none;position:relative;padding-right:2rem}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";position:absolute;right:.2rem;top:.7rem;font-family:var(--mono);color:var(--teal)}
.faq-list details[open] summary::after{content:"−"}
.faq-list details p{padding-bottom:.9rem;margin:0;color:var(--ink-soft);font-size:.95rem}
.faq-tools{margin-bottom:1rem}

/* ---------- Long article ---------- */
.article-long{max-width:860px;margin:0 auto;padding:2.5rem 0;border-top:1px solid var(--line)}
.article-long:first-of-type{border-top:0}
.article-long h2{font-size:1.5rem;line-height:1.5}
.article-long h3{font-size:1.12rem;margin-top:1.6rem;color:var(--teal-deep)}
.article-long figure{margin:1.4rem 0;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:.75rem}
.article-long .table-scroll{margin:1rem 0}
.article-long table{min-width:560px}
.article-long blockquote{margin:1.2rem 0;padding:.8rem 1.1rem;border-left:4px solid var(--blue);background:var(--blue-soft);font-size:.95rem}
.article-long .fail-list li{margin-bottom:.5rem}
.article-long .fail-list li strong{font-family:var(--mono);font-size:.85rem;color:var(--red);margin-right:.3rem}
.toc{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.3rem;font-size:.9rem;margin-bottom:1.5rem}
.toc ol{margin:0;padding-left:1.2rem}
.toc-title{font-family:var(--mono);font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-mute);margin-bottom:.4rem}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.6rem;list-style:none;padding:0;margin:1rem 0}
.kv li{background:var(--white);border:1px solid var(--line);padding:.55rem .7rem;border-radius:4px;font-size:.85rem;margin:0}
.kv li span{display:block;font-family:var(--mono);font-size:.72rem;color:var(--ink-mute)}

/* ---------- Feature grid (App) ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.feature{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem}
.feature .num{font-family:var(--mono);font-size:.75rem;color:var(--blue)}
.feature h3{font-size:1rem;margin:.3rem 0 .4rem}
.feature p{font-size:.9rem;color:var(--ink-soft);margin:0}
.download-box{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.download-box .dl{border:1px dashed var(--line);border-radius:4px;padding:1rem;font-size:.9rem}
.download-box .dl strong{display:block;font-size:1rem;margin-bottom:.3rem}
.download-box .dl .st{margin-top:.4rem}
.phone-mock{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:.75rem}

/* ---------- Company / footer ---------- */
.company{display:grid;grid-template-columns:2fr 1fr;gap:2.5rem}
.company aside{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem;font-size:.9rem}
.company aside dt{font-family:var(--mono);font-size:.75rem;color:var(--ink-mute)}
.company aside dd{margin:0 0 .7rem}
.site-footer{background:var(--bg-deep);color:#c9c5ba;padding:2.5rem 0 1.5rem;font-size:.85rem}
.site-footer a{color:#9fd3c7}
.footer-grid{display:grid;grid-template-columns:1fr 1.2fr 2fr;gap:2rem;margin-bottom:1.5rem}
.footer-brand{font-size:1.4rem;font-weight:700;color:#fff;margin-bottom:.3rem}
.footer-grid nav{display:grid;gap:.25rem}
.footer-notes p{font-size:.8rem;line-height:1.7;color:#a8a49a}
.footer-copy{border-top:1px solid #34403c;padding-top:1rem;margin:0;font-size:.8rem;color:#a8a49a}
.footer-copy span{margin-right:1.2rem}

/* ---------- Misc ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem}
.card h3{font-size:1.05rem}
.industry-list{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.industry-list .card{font-size:.9rem}
.industry-list .card p{margin:0;color:var(--ink-soft)}
.industry-list .card .chain{font-family:var(--mono);font-size:.74rem;color:var(--blue);display:block;margin-top:.5rem;line-height:1.6}
.link-row{display:flex;flex-wrap:wrap;gap:.6rem 1.4rem;margin-top:1.5rem;font-size:.92rem}
.link-row a::after{content:" ›"}
.figure-wide{margin:1.5rem 0;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:.75rem}
.to-top{position:fixed;right:1rem;bottom:1rem;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--white);color:var(--teal);font-size:1.1rem;cursor:pointer;display:none;box-shadow:var(--shadow)}
.to-top.show{display:block}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .trend-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid,.download-box{grid-template-columns:repeat(2,1fr)}
  .workbench{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-notes{grid-column:1/-1}
  .feature-article figure{position:static}
}
@media (max-width:768px){
  body{font-size:15.5px}
  h1,.hero h1,.page-hero h1{font-size:1.6rem}
  h2{font-size:1.32rem}
  .section{padding:2.5rem 0}
  .nav-toggle{display:inline-block}
  .site-nav{display:none;position:absolute;left:0;right:0;top:64px;background:var(--white);border-bottom:1px solid var(--line);flex-direction:column;padding:.5rem 1rem 1rem}
  .site-nav.open{display:flex}
  .site-nav a{padding:.7rem .4rem;border-bottom:1px solid var(--line-soft);white-space:normal}
  .site-nav a.is-active{box-shadow:none;border-left:3px solid var(--teal);padding-left:.6rem}
  .scope-grid,.obs-grid,.latest-list,.latest-list.four,.qa-grid,.qa-grid.three,.grid-2,.grid-3,.company,.industry-list{grid-template-columns:1fr}
  .feature-article{grid-template-columns:1fr;gap:1.2rem;padding:2rem 0}
  .feature-article.reverse figure{order:0}
  .feature-article h3{font-size:1.15rem}
  .flow li{flex:1 1 calc(50% - .5rem)}
  .flow li::after{display:none}
  .extract-list li{grid-template-columns:1fr;gap:.15rem}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  .wrap{padding:0 1rem}
  .trend-grid,.feature-grid,.download-box{grid-template-columns:1fr}
  .flow li{flex:1 1 100%}
  .hero-actions .btn{width:100%;text-align:center}
  .brand-text small{display:none}
}
@media print{
  .site-header,.nav-toggle,.to-top,.demo-controls{display:none}
  body{background:#fff}
}

/* ---------- Additions ---------- */
.hero-title{font-size:1.28rem;font-weight:600;color:var(--teal-deep);margin-bottom:.9rem;line-height:1.55}
.qa-compact{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem}
.qa-compact .qa{padding:.9rem 1.1rem;font-size:.88rem}
.qa-compact .qa h3{font-size:.95rem}
.subhead{margin:2.2rem 0 1rem;font-size:1.15rem}
@media (max-width:1024px){.qa-compact{grid-template-columns:repeat(2,1fr)}}
@media (max-width:768px){.qa-compact{grid-template-columns:1fr}}

/* ---------- Overflow guards (mobile) ---------- */
.workbench>*,.grid-2>*,.grid-3>*,.hero-grid>*,.company>*,.latest-list>*,.qa-grid>*,.industry-list>*{min-width:0}
.doc-viewer-head{flex-wrap:wrap;gap:.3rem}
.doc-page{overflow-wrap:anywhere;word-break:break-all}
.demo-log,.lineage li,.kv li,.extract-list li span{overflow-wrap:anywhere}