:root{--ink:#e8e0d4;--deep:#051821;--teal:#8a6a42;--mint:#c4a574;--paper:#061925;--white:#0e2a38;--copper:#c78a4b;--danger:#bc5a50;--line:rgba(7,29,42,.16);--mono:'IBM Plex Mono',monospace;--sans:'Manrope','Noto Sans TC',sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-weight:400}.progress{position:fixed;z-index:30;top:0;left:0;width:100%;height:3px;background:rgba(255,255,255,.1)}.progress span{display:block;width:0;height:100%;background:var(--copper)}.topbar{position:sticky;z-index:20;top:0;display:flex;align-items:center;justify-content:space-between;height:76px;padding:0 var(--hub-keepout,clamp(24px,4vw,64px));background:rgba(5,24,33,.94);backdrop-filter:blur(14px);color:#fff;border-bottom:1px solid rgba(255,255,255,.1)}.brand{display:flex;align-items:center;color:#fff;text-decoration:none;gap:.7rem}.brand-chip{display:grid;place-items:center;width:34px;height:34px;border:1px solid var(--mint);font:600 1rem var(--mono)}.brand span:nth-child(2){display:flex;flex-direction:column}.brand b{font-size:.9rem;letter-spacing:.16em}.brand small{font-size:.5rem;letter-spacing:.12em;color:#9cb6b9}.brand em{font-style:normal;font:500 .6rem var(--mono);letter-spacing:.14em;color:var(--copper);border-left:1px solid #4b6568;padding-left:.8rem}.topbar nav{display:flex;gap:clamp(.8rem,2vw,2.2rem)}.topbar nav a,.back{color:#b9cdcf;text-decoration:none;font-size:.75rem;letter-spacing:.08em}.topbar nav a:hover,.back:hover{color:#fff}.actions{display:flex;align-items:center;gap:1rem}.actions button{background:transparent;border:0;color:#fff;cursor:pointer;font:500 .7rem var(--mono)}.actions button i{font-style:normal;color:#617c80;margin:.25rem}.back{padding:.55rem .8rem;border:1px solid #456166}.hero{min-height:calc(100vh - 76px);padding:clamp(4rem,8vw,8rem) clamp(1.25rem,7vw,8rem) 3rem;background:linear-gradient(130deg,#041620 0%,#082b38 52%,#0f454a 100%);color:#fff;position:relative;display:grid;grid-template-columns:1.12fr .88fr;align-items:center;gap:7vw;overflow:hidden}.hero-grid{position:absolute;inset:0;opacity:.14;background:repeating-linear-gradient(90deg,transparent 0 89px,rgba(255,255,255,.1) 90px),repeating-linear-gradient(0deg,transparent 0 89px,rgba(255,255,255,.08) 90px)}.hero-copy,.signal-panel,.hero-chain{position:relative}.kicker{font:600 .69rem/1.4 var(--mono);letter-spacing:.18em;color:var(--copper)}h1{max-width:100%;margin:1.4rem 0;font-size:clamp(3.1rem,6vw,7rem);font-weight:600;line-height:1.1;letter-spacing:-.045em}h2{margin:.7rem 0;font-size:clamp(2.1rem,4.4vw,4.8rem);line-height:1.16;letter-spacing:-.04em;font-weight:600}.lead{max-width:44rem;color:#bad0d2;font-size:clamp(1rem,1.4vw,1.25rem);line-height:1.85}.hero-actions{display:flex;gap:1rem;margin-top:2.4rem}.primary,.secondary{display:inline-flex;padding:1rem 1.35rem;text-decoration:none;font-size:.78rem;letter-spacing:.05em}.primary{background:var(--copper);color:#071d2a}.secondary{color:#e4eded;border:1px solid #6b888b}.signal-panel{border:1px solid rgba(255,255,255,.18);background:rgba(2,15,20,.38);padding:2rem}.trace{height:140px;display:flex;align-items:center;gap:4px;border-bottom:1px solid #3d5b60;background:repeating-linear-gradient(0deg,transparent 0 27px,rgba(255,255,255,.06) 28px)}.trace span{width:16.6%;height:2px;background:var(--mint);transform:translateY(var(--y,0)) rotate(var(--r,0));box-shadow:0 0 10px rgba(122,198,189,.6)}.trace span:nth-child(1){--y:18px;--r:-18deg}.trace span:nth-child(2){--y:-3px;--r:31deg}.trace span:nth-child(3){--y:9px;--r:-42deg}.trace span:nth-child(4){--y:-16px;--r:27deg}.trace span:nth-child(5){--y:4px;--r:-12deg}.trace span:nth-child(6){--y:-7px;--r:18deg}.signal-readout{padding:1rem 0;border-bottom:1px solid rgba(255,255,255,.1)}.signal-readout small{display:block;color:#769398;font:500 .6rem var(--mono);letter-spacing:.14em;margin-bottom:.45rem}.signal-readout b{font:500 .75rem var(--mono);letter-spacing:.08em}.signal-readout.alert b{color:#e08a7e}.signal-readout.safe b{color:var(--mint)}.hero-chain{grid-column:1/-1;display:flex;align-items:center;justify-content:center;gap:1rem;font:500 .58rem var(--mono);letter-spacing:.12em;color:#9db5b8}.hero-chain i{width:3vw;height:1px;background:#547176}.principle,.section{padding:clamp(4rem,8vw,9rem) clamp(1.25rem,7vw,8rem)}.principle{background:#0a2230;display:grid;grid-template-columns:.35fr 1fr;gap:4rem;align-items:end}.section-no{font:500 .66rem var(--mono);letter-spacing:.15em;color:#6a7776}.principle h2{font-size:clamp(2.3rem,5vw,5.8rem);max-width:100%}.claim-states{grid-column:2;display:flex;flex-wrap:wrap;gap:1.4rem;border-top:1px solid var(--line);padding-top:1.5rem}.claim-states span{font:500 .62rem var(--mono);letter-spacing:.08em}.claim-states i{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:.5rem}.public{background:#84969a}.claim{background:var(--copper)}.inference{background:#6e80a9}.verified{background:#2f857d}.unknown{background:var(--danger)}.section-head{display:grid;grid-template-columns:1.2fr .8fr;gap:6vw;align-items:end;margin-bottom:clamp(2.5rem,5vw,5rem)}.section-head h2{max-width:100%}.section-head>p{color:#596b6d;line-height:1.8;max-width:40rem}.threats{background:var(--white)}.threat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line)}.threat-grid article{background:#0e2a38;padding:clamp(1.5rem,3vw,3rem);min-height:430px;display:flex;flex-direction:column;border-top:4px solid var(--teal)}.threat-grid article.danger{border-color:var(--danger)}.threat-grid article.copper{border-color:var(--copper)}.threat-grid article>span{font:600 .65rem var(--mono);letter-spacing:.18em;color:#64787a}.threat-grid h3{font-size:clamp(1.45rem,2.5vw,2.5rem);margin:2rem 0 1rem}.threat-grid p{color:#536668;line-height:1.85}.threat-grid footer{margin-top:auto;border-top:1px solid var(--line);padding-top:1.3rem}.threat-grid footer b,.threat-grid footer small{display:block;font:500 .6rem var(--mono);letter-spacing:.1em}.threat-grid footer b{color:var(--copper);margin-bottom:.6rem}.windows{background:var(--deep);color:#fff}.windows .section-head>p{color:#9fb5b7}.window-layout{display:grid;grid-template-columns:.26fr .46fr .28fr;border:1px solid #304d52}.phase-tabs{display:flex;flex-direction:column;border-right:1px solid #304d52}.phase-tabs button{flex:1;text-align:left;padding:1.2rem;background:transparent;color:#819c9f;border:0;border-bottom:1px solid #263f44;cursor:pointer}.phase-tabs button b{margin-right:1rem;color:#617d80;font:500 .65rem var(--mono)}.phase-tabs button span{font:500 .72rem var(--mono);letter-spacing:.1em}.phase-tabs button.active{background:#0c323b;color:#fff;box-shadow:inset 3px 0 var(--copper)}.window-detail{padding:clamp(1.5rem,4vw,4rem);min-height:480px}.window-detail .state{font:500 .65rem var(--mono);letter-spacing:.15em;color:var(--copper)}.window-detail h3{font-size:clamp(1.8rem,3vw,3.4rem);line-height:1.2;margin:1.2rem 0}.window-detail>p{color:#a9bdc0;line-height:1.8}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#355057;margin-top:2.5rem}.detail-grid div{padding:1.2rem;background:#092631}.detail-grid small,.detail-grid b{display:block}.detail-grid small{font:500 .56rem var(--mono);letter-spacing:.12em;color:#688589}.detail-grid b{font-size:.82rem;line-height:1.55;margin-top:.6rem}.window-visual{position:relative;overflow:hidden;padding:2rem;background:radial-gradient(circle at 50% 35%,#15454c,#071d28 65%);border-left:1px solid #304d52}.power-rail{height:1px;background:#42666b;margin:4rem 0 2rem;box-shadow:0 0 0 8px rgba(122,198,189,.02)}.asset-state small,.result small{font:500 .55rem var(--mono);letter-spacing:.13em;color:#6e8e92}.asset-state strong{display:block;margin-top:.6rem;font:500 1.2rem var(--mono);color:#aec2c4}.pulse{display:flex;gap:.45rem;height:150px;align-items:center}.pulse i{width:18%;height:2px;background:#4b7074}.window-visual.active .pulse i{background:var(--mint);box-shadow:0 0 12px var(--mint);animation:pulse 1.3s ease-in-out infinite alternate}.window-visual.active .pulse i:nth-child(2){animation-delay:.2s}.window-visual.active .pulse i:nth-child(3){animation-delay:.4s}.result{border-top:1px solid #315057;padding-top:1.4rem}.result b{display:block;margin-top:.6rem;color:var(--mint);font:.75rem var(--mono)}@keyframes pulse{to{transform:translateY(-18px) scaleY(2)}}.controls{background:#0a2230}.control-matrix{border-top:1px solid #899694}.matrix-row{display:grid;grid-template-columns:.8fr 1.1fr 1fr 1.1fr 1.1fr;border-bottom:1px solid #aeb7b2}.matrix-row>*{padding:1.2rem;border-right:1px solid #b8bfba;font-size:.78rem;line-height:1.55}.matrix-row.head{font:600 .58rem var(--mono);letter-spacing:.1em;color:#617271}.matrix-row b{font:600 .68rem var(--mono);letter-spacing:.06em}.evidence{background:var(--white)}.ladder{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--line)}.ladder button{min-height:150px;padding:1.2rem;text-align:left;border:0;background:#0a2230;cursor:pointer;transition:.2s}.ladder button:hover,.ladder button.active{background:var(--teal);color:#fff;transform:translateY(-6px)}.ladder button small,.ladder button b{display:block}.ladder button small{font:500 .58rem var(--mono);letter-spacing:.1em;color:var(--copper)}.ladder button b{font-size:.82rem;margin-top:2rem}.evidence-detail{margin-top:1px;background:#0b2a35;color:#fff;padding:clamp(1.5rem,4vw,4rem);display:grid;grid-template-columns:.3fr .7fr;gap:3rem}.evidence-detail h3{font-size:2rem;margin:0}.evidence-detail p{margin:0;color:#b4c8ca;line-height:1.8}.evidence-detail ul{grid-column:2;margin:0;padding-left:1.2rem;color:#d5dfdf;line-height:2}.navigator{background:#0b303a;color:#fff}.navigator .section-head>p{color:#a9bdc0}.navigator-shell{display:grid;grid-template-columns:.38fr .62fr;border:1px solid #476269}.navigator form{padding:clamp(1.5rem,3vw,3rem);border-right:1px solid #476269}.navigator label{display:block;margin-bottom:1.5rem}.navigator label span{display:block;font:500 .62rem var(--mono);letter-spacing:.1em;color:#94adb0;margin-bottom:.6rem}.navigator select{width:100%;padding:1rem;background:#08232d;border:1px solid #4c676b;color:#fff;font:inherit}.cert-result{padding:clamp(1.5rem,4vw,4rem)}.cert-result .route{font:500 .62rem var(--mono);letter-spacing:.14em;color:var(--copper)}.cert-result h3{font-size:clamp(1.8rem,3vw,3.5rem);margin:1rem 0}.cert-result p{color:#b1c4c6;line-height:1.8}.cert-tags{display:flex;gap:.7rem;flex-wrap:wrap;margin:1.8rem 0}.cert-tags span{padding:.55rem .75rem;border:1px solid #557277;font:500 .62rem var(--mono)}.cert-warning{border-top:1px solid #49646a;padding-top:1.3rem;color:#d7c09f!important}.learning{background:#0e2a38}.role-tabs{display:flex;gap:1px;background:var(--line)}.role-tabs button{flex:1;padding:1rem;border:0;background:#0a2230;font:500 .65rem var(--mono);letter-spacing:.08em;cursor:pointer}.role-tabs button.active{background:var(--ink);color:#fff}.role-path{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);margin-top:1px}.role-path article{background:#0e2a38;padding:2rem;min-height:280px}.role-path article span{font:500 .6rem var(--mono);letter-spacing:.14em;color:var(--copper)}.role-path h3{font-size:1.25rem;line-height:1.4;margin:1.4rem 0}.role-path p{color:#5c6c6e;line-height:1.7;font-size:.86rem}.role-path b{display:block;margin-top:2rem;font:500 .62rem var(--mono);color:#42696c}.governance{background:#0e2a38}.governance-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#879b98}.governance-grid article{background:#0e2a38;padding:2rem}.governance-grid b{font:600 .66rem var(--mono);letter-spacing:.12em;color:#285b5f}.governance-grid p{margin:1.5rem 0 0}.governance-note{max-width:70rem;line-height:1.8;margin:2.5rem 0 0;border-left:3px solid var(--copper);padding-left:1.5rem}.sources{background:#0e2a38}.sources h2{max-width:100%}.source-list{margin-top:3rem}.source-list a{display:grid;grid-template-columns:.1fr .38fr .52fr;gap:1rem;align-items:center;padding:1.3rem 0;border-top:1px solid var(--line);color:var(--ink);text-decoration:none}.source-list a:hover b{color:var(--teal)}.source-list span{font:500 .65rem var(--mono);color:var(--copper)}.source-list small{color:#69787a}.source-policy{margin-top:2rem;max-width:75rem;color:#69787a;line-height:1.8;font-size:.82rem}footer{padding:2rem clamp(1.25rem,7vw,8rem);background:#04161f;color:#88a1a4;display:flex;justify-content:space-between;gap:1rem;font:500 .62rem var(--mono);letter-spacing:.08em}footer a{color:#d4dfdf;text-decoration:none}
@media(max-width:1050px){.topbar nav{display:none}.hero{grid-template-columns:1fr}.signal-panel{max-width:700px}.principle{grid-template-columns:1fr}.claim-states{grid-column:1}.section-head{grid-template-columns:1fr}.window-layout{grid-template-columns:.28fr .72fr}.window-visual{grid-column:1/-1;border-left:0;border-top:1px solid #304d52;min-height:280px}.ladder{grid-template-columns:repeat(3,1fr)}.navigator-shell{grid-template-columns:1fr}.navigator form{border-right:0;border-bottom:1px solid #476269}.role-path,.governance-grid{grid-template-columns:1fr 1fr}.control-matrix{overflow-x:auto}.matrix-row{min-width:900px}}
@media(max-width:680px){.topbar{height:68px}.brand em,.back{display:none}.hero{padding-top:4rem;min-height:auto}.hero h1{font-size:clamp(2.8rem,14vw,4.3rem);line-height:1.12}.hero-chain{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem}.hero-chain i{display:none}.hero-actions{align-items:stretch;flex-direction:column}.principle,.section{padding:4.5rem var(--hub-keepout,24px)}.principle h2,.section h2{font-size:clamp(2.15rem,11vw,3.4rem);line-height:1.18}.threat-grid{grid-template-columns:1fr}.window-layout{grid-template-columns:1fr}.phase-tabs{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid #304d52}.phase-tabs button{min-width:112px}.window-detail{min-height:0}.detail-grid{grid-template-columns:1fr}.window-visual{grid-column:auto}.matrix-row>*{padding:1rem}.ladder{grid-template-columns:1fr 1fr}.evidence-detail{grid-template-columns:1fr;gap:1.2rem}.evidence-detail ul{grid-column:1}.role-tabs{overflow-x:auto}.role-tabs button{min-width:145px}.role-path,.governance-grid{grid-template-columns:1fr 1fr}.source-list a{grid-template-columns:.12fr .88fr}.source-list small{grid-column:2}footer{flex-direction:column}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

/* Grid children carry long technical tokens; allow them to shrink without widening the page. */
.threat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.threat-grid article{min-width:0;overflow-wrap:anywhere}
@media(max-width:680px){.threat-grid{grid-template-columns:1fr}}

/* Premium editorial finish */
html{background:#03141d}body{text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}::selection{color:#041820;background:#83d3cb}.topbar{background:linear-gradient(180deg,rgba(5,28,37,.97),rgba(5,28,37,.88));border-bottom-color:rgba(126,203,197,.18);box-shadow:0 12px 38px rgba(0,10,15,.22);backdrop-filter:blur(22px) saturate(135%)}.brand-chip{box-shadow:0 0 0 1px rgba(126,218,210,.12),0 8px 28px rgba(36,154,151,.17)}.topbar nav a{position:relative;transition:color .25s ease,transform .25s ease}.topbar nav a::after{content:"";position:absolute;left:15%;right:15%;bottom:-.8rem;height:1px;background:var(--mint);transform:scaleX(0);transition:transform .25s ease;box-shadow:0 0 10px rgba(122,198,189,.6)}.topbar nav a:hover{transform:translateY(-1px)}.topbar nav a:hover::after{transform:scaleX(1)}.hero::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle at 77% 36%,rgba(30,123,125,.13),transparent 30%),radial-gradient(circle at 22% 65%,transparent 0 25%,rgba(0,8,13,.3) 80%),repeating-linear-gradient(112deg,rgba(255,255,255,.012) 0 1px,transparent 1px 5px);mix-blend-mode:soft-light}.hero-copy,.signal-panel,.hero-chain{z-index:1}.hero h1{text-wrap:balance;text-shadow:0 14px 48px rgba(0,7,12,.3)}.lead{text-wrap:pretty}.signal-panel{background:linear-gradient(145deg,rgba(2,18,24,.66),rgba(8,42,47,.42));border-color:rgba(147,219,212,.2);box-shadow:0 34px 80px rgba(0,8,13,.3),inset 0 1px rgba(255,255,255,.035);backdrop-filter:blur(8px)}.trace{position:relative}.trace::after{content:"";position:absolute;inset:24% 5%;background:radial-gradient(ellipse,rgba(105,219,209,.11),transparent 68%);filter:blur(10px)}.primary,.secondary{position:relative;overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}.primary:hover,.secondary:hover{transform:translateY(-3px)}.primary:hover{box-shadow:0 17px 40px rgba(199,138,75,.23)}.secondary:hover{border-color:#92b6b8}.principle h2,.section-head h2,.sources h2{text-wrap:balance}.section-head>p,.threat-grid p,.governance-note{text-wrap:pretty}.threat-grid article,.ladder button,.role-path article,.governance-grid article{transition:transform .3s cubic-bezier(.2,.75,.25,1),box-shadow .3s ease,background-color .3s ease,border-color .3s ease}.threat-grid article:hover,.role-path article:hover,.governance-grid article:hover{transform:translateY(-6px);box-shadow:0 24px 52px rgba(3,25,32,.14);position:relative;z-index:2}.window-layout,.control-matrix,.navigator-shell{box-shadow:0 34px 86px rgba(0,8,13,.17)}.phase-tabs button{transition:background-color .24s ease,color .24s ease,box-shadow .24s ease}.phase-tabs button:hover{color:#fff;background:rgba(19,74,82,.46)}.ladder button.active{box-shadow:0 18px 36px rgba(5,57,63,.2)}.source-list a{transition:padding-left .25s ease,background-color .25s ease,border-color .25s ease}.source-list a:hover{padding-left:1rem;background:rgba(18,89,94,.035);border-color:rgba(15,95,101,.32)}footer{box-shadow:inset 0 1px rgba(255,255,255,.055)}
@media(max-width:680px){body[data-language="zh"] h1,body[data-language="zh"] h2{letter-spacing:-.018em;line-break:strict}.hero h1{font-size:clamp(2.75rem,13vw,4rem);line-height:1.16;max-width:100%}.lead{line-height:1.8}.section{padding-top:5rem;padding-bottom:5rem}.threat-grid article:hover,.role-path article:hover,.governance-grid article:hover{transform:none}body[data-language="zh"] .hero h1{max-width:100%;word-break:normal;overflow-wrap:break-word}}

/* Loop refinement 01 — align Assurance with the hub's editorial restraint. */
:root{--font-sans:var(--sans);--type-assurance-hero:clamp(3rem,5.35vw,5.85rem);--type-assurance-principle:clamp(2.25rem,3.4vw,3.25rem);--type-assurance-hero-mobile:clamp(2.45rem,11.2vw,3.45rem);--type-assurance-principle-mobile:clamp(1.75rem,7.8vw,2.15rem);--type-assurance-section-mobile:clamp(2rem,9.5vw,3rem)}
.hero h1{max-width:100%;font-size:var(--type-assurance-hero);font-weight:580;line-height:1.16;letter-spacing:-.025em;text-wrap:balance}
.lead{max-width:41rem;text-wrap:pretty}
.section-head h2,.principle h2,.sources h2{line-height:1.22;letter-spacing:-.025em;text-wrap:balance}
.principle h2{max-width:100%;font-size:var(--type-assurance-principle);line-height:1.34;font-weight:560;letter-spacing:-.012em}
.threat-grid h3,.window-detail h3,.cert-result h3,.role-path h3{line-height:1.3;text-wrap:balance}
@media(max-width:680px){.hero h1{max-width:100%;font-size:var(--type-assurance-hero-mobile);line-height:1.27;letter-spacing:-.01em}.principle h2{font-size:var(--type-assurance-principle-mobile);line-height:1.42}.section h2{font-size:var(--type-assurance-section-mobile);line-height:1.3;letter-spacing:-.01em}}

/* Governance is an ordered traceability pipeline, not another card gallery. */
.governance-grid{gap:0;background:transparent;border-top:1px solid #879b98;border-bottom:1px solid #879b98;counter-reset:governance-step}
.governance-grid article{position:relative;min-width:0;padding:2rem 3rem 2rem 0;background:transparent;border-right:1px solid rgba(7,29,42,.18);counter-increment:governance-step}
.governance-grid article+article{padding-left:2rem}
.governance-grid article:last-child{border-right:0}
.governance-grid article::before{content:"0" counter(governance-step);display:block;margin-bottom:2.2rem;color:#617775;font:500 .58rem var(--mono);letter-spacing:.12em}
.governance-grid article:not(:last-child)::after{content:"";position:absolute;z-index:2;right:-5px;top:50%;width:9px;height:9px;background:#0e2a38;border-top:1px solid #456d6b;border-right:1px solid #456d6b;transform:rotate(45deg)}
.governance-grid article:hover{z-index:auto;transform:none;box-shadow:none}

@media(max-width:680px){.governance-grid{padding-left:18px;border-top:0;border-bottom:0;border-left:1px solid #879b98}.governance-grid article,.governance-grid article+article{padding:1.5rem 1rem 1.5rem 1.3rem;border-right:0;border-bottom:1px solid rgba(7,29,42,.18)}.governance-grid article:last-child{border-bottom:0}.governance-grid article::before{margin-bottom:.8rem}.governance-grid article:not(:last-child)::after{right:auto;left:-5px;top:auto;bottom:-5px;background:#0e2a38;transform:rotate(135deg)}}

/* REFINE-005: accessible navigation and comparison surfaces. */
:where(a,button,select,[tabindex]):focus-visible{outline:2px solid var(--mint);outline-offset:3px}
.matrix-scroll-hint{display:none;margin:0 0 .8rem;color:#596b6d;font:500 .65rem/1.5 var(--mono);letter-spacing:.06em}
.control-matrix:focus-visible{outline-color:var(--teal);box-shadow:0 0 0 5px rgba(122,198,189,.18)}
@media(max-width:1050px){
  .topbar{height:auto;min-height:76px;flex-wrap:wrap;row-gap:10px;padding-top:13px;padding-bottom:10px}
  .topbar nav{display:flex;order:3;width:100%;gap:22px;overflow-x:auto;padding:4px 0 3px;scrollbar-width:none}
  .topbar nav::-webkit-scrollbar{display:none}
  .topbar nav a{flex:0 0 auto;white-space:nowrap}
}
@media(max-width:680px){
  .topbar{height:auto;min-height:68px}
  .matrix-scroll-hint{display:block}
  .control-matrix{position:relative;box-shadow:inset -20px 0 18px -18px rgba(7,29,42,.42),0 24px 55px rgba(0,8,13,.12)}
}

/* REFINE-011: compact assurance rhythm without compressing evidence text. */
:root{--assurance-section-space:clamp(64px,6.5vw,88px);--assurance-panel-space:clamp(20px,2.5vw,32px);--assurance-gap:clamp(12px,1.5vw,18px)}
.hero{min-height:min(700px,calc(100svh - 76px));padding-top:clamp(4rem,6vw,6rem);padding-bottom:2.5rem}
.hero h1{font-size:min(var(--type-assurance-hero),68px)}
.principle,.section{padding-top:var(--assurance-section-space);padding-bottom:var(--assurance-section-space)}
.section-head{margin-bottom:clamp(30px,4vw,52px)}
.threat-grid,.role-path{gap:var(--assurance-gap);background:transparent}
.threat-grid article{min-height:340px;padding:var(--assurance-panel-space)}
.role-path article{min-height:220px;padding:var(--assurance-panel-space)}
.window-detail,.evidence-detail,.cert-result{padding:var(--assurance-panel-space)}
.source-list{margin-top:2rem}

@media(max-width:680px){
  :root{--assurance-section-space:46px;--assurance-panel-space:20px;--assurance-gap:10px}
  .hero{min-height:auto;padding-top:3rem;padding-bottom:2.5rem}
  .hero h1{font-size:var(--type-assurance-hero-mobile)}
  .principle,.section{padding:var(--assurance-section-space) var(--hub-keepout,24px)}
  .section-head{margin-bottom:28px}
  .threat-grid{gap:8px}
  .threat-grid article{min-height:0;padding:20px}
  .threat-grid h3{margin:14px 0 8px}
  .window-detail,.evidence-detail,.cert-result{padding:20px}
  .detail-grid{margin-top:18px}
  .phase-tabs{display:grid;grid-template-columns:1fr 1fr;overflow:visible;border-right:0}
  .phase-tabs button{min-width:0;min-height:44px;padding:12px 10px}
  .ladder button{min-height:112px;padding:14px}
  .role-tabs{display:grid;grid-template-columns:1fr 1fr;overflow:visible}
  .role-tabs button{min-width:0;min-height:44px;padding:12px 8px}
  .role-path{gap:8px}
  .role-path article{min-height:0;padding:20px}
  .source-list{margin-top:1.5rem}
  .source-list a{padding:1rem 0}
  .source-list small,.source-policy,.threat-grid p,.evidence-detail p,.role-path p{font-size:15px}
}

/* REFINE-012: AA-safe roles, semantic maturity and mobile record layout. */
:root{--type-assurance-section-mobile:clamp(1.85rem,8vw,2.15rem)}
.skip-link{position:fixed;z-index:1000;left:14px;top:10px;padding:11px 15px;color:#03131e;background:#7ac6bd;border:2px solid #03131e;border-radius:4px;font:700 14px var(--sans);text-decoration:none;transform:translateY(-160%);transition:transform .18s ease}
.skip-link:focus{transform:translateY(0)}
html{scroll-padding-top:90px}
.primary{background:var(--mint);color:#071d2a}
.primary:hover{box-shadow:0 17px 40px rgba(122,198,189,.25)}
.matrix-row.head{color:#485c5c}
.phase-tabs button.active b{color:#9cc8c7}
.source-list span{color:#8a5525}

@media(max-width:1050px){html{scroll-padding-top:142px}}

@media(max-width:680px){
  .topbar nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));order:3;width:100%;gap:1px;overflow:visible;padding:0;border-top:1px solid rgba(255,255,255,.1)}
  .topbar nav a{display:grid;place-items:center;min-width:0;min-height:44px;padding:6px 3px;background:rgba(255,255,255,.025);font-size:.56rem;line-height:1.25;text-align:center}
  .actions{gap:.5rem}
  .actions button,.back{min-width:44px;min-height:44px}
  .matrix-scroll-hint{display:none}
  .control-matrix{display:grid;gap:10px;overflow:visible;border:0;box-shadow:none}
  .matrix-row.head{display:none}
  .matrix-row{display:block;min-width:0;border:1px solid #aeb7b2;background:#e6e1d8}
  .matrix-row>*{display:block;padding:13px 16px;border:0;border-bottom:1px solid #c3c8c3;font-size:.82rem}
  .matrix-row>*:last-child{border-bottom:0}
  .matrix-row>b{color:#fff;background:#0f4b54;font:.7rem/1.4 var(--mono);letter-spacing:.08em}
  .matrix-row span::before{display:block;margin-bottom:5px;color:#485c5c;font:.58rem/1.3 var(--mono);letter-spacing:.09em}
  .matrix-row span:nth-of-type(1)::before{content:"CLAIM"}
  .matrix-row span:nth-of-type(2)::before{content:"TEST"}
  .matrix-row span:nth-of-type(3)::before{content:"EXPECTED EVIDENCE"}
  .matrix-row span:nth-of-type(4)::before{content:"LIMIT"}
}

/* =============================================================================
   LAYOUT REPAIR: Threat Grid Article Footer & Vertical Text Distortion Fix
   Root Cause Analysis:
   1. The generic 'footer' element selector assigned 'display: flex' and large 
      horizontal padding (2rem clamp) intended for the site footer to article footers.
   2. 'overflow-wrap: anywhere' forced flex child <b> to crush into 1-character 
      vertical columns (A-S-S-E-T-S, OU-TC-OM-ES, BO-UN-DA-RY).
   Resolution:
   - Override article footer to block display with zero horizontal padding.
   - Enforce 'white-space: nowrap' and 'word-break: keep-all' on <b> labels.
   - Cleanly format monospace small text with proper line-height and wrapping.
   ============================================================================= */
.threat-grid article footer {
  display: block !important;
  width: 100% !important;
  box-sizing: border-box !important;
  margin-top: auto !important;
  padding: 1.25rem 0 0 0 !important;
  border-top: 1px solid var(--line, rgba(122, 198, 189, 0.2)) !important;
  background: transparent !important;
  box-shadow: none !important;
  text-align: left !important;
}

.threat-grid article footer b {
  display: block !important;
  color: var(--copper, #c78a4b) !important;
  font-family: var(--mono, "IBM Plex Mono", Consolas, monospace) !important;
  font-size: 0.68rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.14em !important;
  margin-bottom: 0.45rem !important;
  white-space: nowrap !important;
  word-break: keep-all !important;
  overflow-wrap: normal !important;
  text-transform: uppercase !important;
}

.threat-grid article footer small {
  display: block !important;
  font-family: var(--mono, "IBM Plex Mono", Consolas, monospace) !important;
  font-size: 0.72rem !important;
  font-weight: 400 !important;
  color: #8fa8b2 !important;
  line-height: 1.55 !important;
  letter-spacing: 0.03em !important;
  word-break: normal !important;
  overflow-wrap: break-word !important;
}



/* ==========================================================================
   REVIEWER 3 FIXES: REMOVE CH LIMITS, STABILIZE WINDOW & RESPONSIVE LADDER
   ========================================================================== */

/* 1. 廢除固定 ch 寬度，全面改為寬裕的 em 與百分比 */
.hero h1 {
  max-width: 24em !important;
  text-wrap: balance !important;
  font-size: clamp(36px, 4.5vw, 56px) !important;
  line-height: 1.18 !important;
}

.section-head h2,
.principle h2,
.sources h2 {
  max-width: 28em !important;
  text-wrap: balance !important;
  line-height: 1.22 !important;
}

body[data-language="zh"] .hero h1,
body[data-language="zh"] .section-head h2 {
  line-height: 1.28 !important;
  letter-spacing: -0.01em !important;
  word-break: normal !important;
}

/* 2. 攻擊時窗 (01-05) 行動端流式佈局與詳情防震盪 */
@media (max-width: 680px) {
  .phase-tabs {
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 6px !important;
  }
  .phase-tabs button {
    flex: 1 1 calc(50% - 6px) !important;
    min-height: 46px !important;
  }
  .phase-tabs button[data-phase="zeroize"] {
    flex: 1 1 100% !important;
    text-align: center !important;
  }
}

.window-detail {
  min-height: 380px !important;
}

/* 3. M1-M6 成熟度階梯卡片在 1200px 提前轉為 3 欄，避免 FIELD-PROVEN 溢出 */
@media (max-width: 1200px) {
  .ladder {
    grid-template-columns: repeat(3, 1fr) !important;
  }
}

/* 4. 行動端控制矩陣偽元素繁中在地化 */
body[data-language="zh"] .matrix-row span:nth-of-type(1)::before { content: "宣稱 (CLAIM) · "; }
body[data-language="zh"] .matrix-row span:nth-of-type(2)::before { content: "測試方法 (TEST) · "; }
body[data-language="zh"] .matrix-row span:nth-of-type(3)::before { content: "預期證據 (EVIDENCE) · "; }
body[data-language="zh"] .matrix-row span:nth-of-type(4)::before { content: "防禦邊界 (LIMIT) · "; }


/* Control Matrix 手機端卡片化繁中偽元素修復 */
body[data-language="zh"] .matrix-row span:nth-of-type(1)::before { content: "安全主張 (CLAIM) · "; }
body[data-language="zh"] .matrix-row span:nth-of-type(2)::before { content: "驗證測試 (TEST) · "; }
body[data-language="zh"] .matrix-row span:nth-of-type(3)::before { content: "預期證據 (EVIDENCE) · "; }
body[data-language="zh"] .matrix-row span:nth-of-type(4)::before { content: "防禦限制 (LIMIT) · "; }

body[data-language="en"] .matrix-row span:nth-of-type(1)::before { content: "CLAIM · "; }
body[data-language="en"] .matrix-row span:nth-of-type(2)::before { content: "TEST · "; }
body[data-language="en"] .matrix-row span:nth-of-type(3)::before { content: "EXPECTED EVIDENCE · "; }
body[data-language="en"] .matrix-row span:nth-of-type(4)::before { content: "LIMIT · "; }


/* =========================================================
   全站語系切換最上層治理規範：英文為第一預設 (English as Default)
   ========================================================= */
[data-lang="zh"] {
  display: none !important;
}
[data-lang="en"] {
  display: revert;
}

html[data-language="zh"] [data-lang="zh"],
body[data-language="zh"] [data-lang="zh"] {
  display: revert !important;
}
html[data-language="zh"] [data-lang="en"],
body[data-language="zh"] [data-lang="en"] {
  display: none !important;
}
