@font-face{font-family:Fallback;src:local("PingFang SC")}
:root{--ink:#13243a;--deep:#0e1b2a;--muted:#647286;--line:#dbe4e8;--paper:#f7f9f8;--teal:#117d79;--teal-light:#dff3ed;--sun:#f3b94f;--coral:#e38366;--white:#fff;--shadow:0 24px 70px rgba(12,33,52,.14)}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden}body{font-family:Fallback,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;background:#e9efef;color:var(--ink)}button{font:inherit;cursor:pointer}.app{display:grid;grid-template-columns:258px minmax(0,1fr);height:100vh}.rail{background:var(--deep);color:#e9f3f1;padding:26px 14px 20px;display:flex;flex-direction:column;min-height:0}.brand{display:flex;align-items:center;gap:11px;padding:0 14px 26px;font-size:23px;font-weight:800;letter-spacing:2px}.brand-mark{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--sun);color:#163142;font-size:24px;line-height:1}.brand-sub{display:block;font-size:8px;letter-spacing:4px;color:#90a9ab;margin-top:1px}.rail-label{color:#829b9f;font-size:10px;letter-spacing:2px;border-top:1px solid #263847;padding:16px 14px 10px;display:flex;justify-content:space-between}.slide-nav{overflow:auto;min-height:0;scrollbar-width:thin;scrollbar-color:#34515a transparent}.nav-item{display:flex;gap:11px;width:100%;align-items:center;text-align:left;border:0;background:transparent;color:#aebfc1;padding:10px 12px;border-radius:9px;font-size:12px;line-height:1.25;transition:.2s}.nav-item:hover{background:#1b3340;color:#fff}.nav-item.active{background:#214b50;color:#fff}.nav-item.active .nav-num{background:var(--sun);color:var(--deep)}.nav-num{width:22px;height:22px;border-radius:6px;background:#203641;display:grid;place-items:center;flex:none;font-size:10px;font-weight:700;color:#8eacaf}.nav-group{font-size:10px;color:#537c7e;padding:18px 12px 6px;letter-spacing:2px}.rail-bottom{margin-top:auto;border-top:1px solid #263847;padding:19px 13px 0;color:#acc2c2;font-size:11px;line-height:1.8}.rail-bottom small{color:#718e92}.live-dot{display:inline-block;width:7px;height:7px;background:#7dd6aa;border-radius:50%;margin-right:8px;box-shadow:0 0 12px #7dd6aa}.main{position:relative;display:flex;flex-direction:column;min-width:0;min-height:0}.toolbar{height:58px;flex:none;display:flex;justify-content:space-between;align-items:center;padding:0 25px;background:#f7f9f8;border-bottom:1px solid #dce5e5}.toolbar-title{font-size:12px;color:#6f8088}.toolbar-title strong{color:#24394b;font-size:13px}.divider{margin:0 11px;color:#b6c2c6}.toolbar-actions{display:flex;gap:8px}.toolbar-btn{border:1px solid #d4e0df;background:#fff;color:#41585f;border-radius:7px;padding:8px 12px;font-size:11px}.toolbar-btn:hover{background:#e6f0ee}.toolbar-btn.primary{background:#153c42;color:white;border-color:#153c42}.stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:20px 26px;background:radial-gradient(circle at 70% 30%,#f7fbf7,#e5edee 70%)}.slide-viewport{width:1280px;height:720px;position:relative;flex:none;transform-origin:center center;background:#fff;box-shadow:var(--shadow);overflow:hidden}.slides{height:100%;width:100%}.slide{position:absolute;inset:0;display:none;overflow:hidden;padding:48px 62px 42px;background:var(--paper)}.slide.active{display:block}.slide::after{content:attr(data-index);position:absolute;bottom:23px;right:48px;font-size:11px;font-weight:700;letter-spacing:2px;color:#9aadaf}.slide-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:25px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:3px;color:var(--teal);text-transform:uppercase}.slide h1,.slide h2,.slide h3,.slide p{margin:0}.slide h2{font-size:35px;line-height:1.24;letter-spacing:-1px;margin-top:11px;color:var(--ink)}.slide .subtitle{font-size:16px;line-height:1.6;color:#607183;margin-top:11px}.section-index{font-size:12px;color:#9aafb2;letter-spacing:2px}.accent{color:var(--teal)}.warm{color:#c37d24}.coral{color:#cf684e}.slide-footer{position:absolute;bottom:22px;left:62px;font-size:10px;color:#91a3a9;letter-spacing:.7px}.pill{display:inline-flex;align-items:center;border-radius:999px;padding:7px 13px;background:#e3f4ee;color:#167c75;font-size:11px;font-weight:700;letter-spacing:.5px}.pill.amber{background:#fff0d4;color:#a97621}.pill.navy{background:#e5ebef;color:#3b5367}.big-quote{font-size:31px;line-height:1.55;font-weight:700;letter-spacing:-.7px}.small-quote{font-size:20px;line-height:1.5;font-weight:600}.muted{color:var(--muted)}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:22px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:19px}.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.soft-card{background:#fff;border:1px solid #e5eeee;border-radius:16px;padding:24px;box-shadow:0 7px 24px rgba(20,55,64,.035)}.soft-card h3{font-size:20px;line-height:1.3;margin-bottom:12px}.soft-card p{font-size:14px;line-height:1.7;color:#61727c}.card-kicker{font-size:11px;color:var(--teal);font-weight:800;letter-spacing:2px;margin-bottom:11px}.icon-disc{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:#dff3ed;color:#137e77;font-size:23px;margin-bottom:19px}.mini-label{font-size:12px;font-weight:700;color:var(--teal);letter-spacing:1px}.highlight-band{padding:21px 24px;border-radius:14px;background:#e5f4ed;border-left:4px solid var(--teal)}.highlight-band p{font-size:17px;line-height:1.5}.simple-list{list-style:none;padding:0;margin:0}.simple-list li{padding:10px 0;border-bottom:1px solid #e5ecec;font-size:15px;line-height:1.5}.simple-list li:last-child{border:0}.simple-list b{color:var(--teal)}.flow{display:flex;align-items:stretch;gap:11px}.flow-node{flex:1;border-radius:15px;background:#fff;border:1px solid #e1eae9;padding:19px 17px;min-width:0}.flow-node .step{color:#b1c7c5;font-size:12px;font-weight:800;letter-spacing:2px}.flow-node b{display:block;font-size:20px;margin:12px 0 8px}.flow-node p{font-size:12px;line-height:1.55;color:#6e7f84}.flow-arrow{align-self:center;color:#74a7a3;font-size:25px;font-weight:300}.metric{border-top:1px solid #cbdad9;padding-top:12px}.metric .value{font-size:43px;font-weight:800;color:var(--teal);letter-spacing:-2px;line-height:1.1}.metric .label{font-size:13px;color:#60727c;margin-top:8px}.metric .detail{font-size:11px;color:#93a2a8;margin-top:5px}.timeline{position:relative}.timeline:before{content:"";position:absolute;left:27px;top:19px;bottom:19px;width:2px;background:#c4deda}.timeline-item{display:flex;gap:19px;align-items:flex-start;padding:0 0 19px;position:relative}.timeline-item:last-child{padding-bottom:0}.timeline-dot{width:56px;height:56px;flex:none;border-radius:50%;background:#dff3ed;color:var(--teal);display:grid;place-items:center;font-weight:800;font-size:18px;z-index:1}.timeline-item b{display:block;font-size:17px;margin:3px 0 5px}.timeline-item p{font-size:13px;line-height:1.5;color:#687a83}.rule{height:1px;background:#dce7e6;margin:22px 0}.chip{display:inline-block;padding:7px 10px;border-radius:7px;background:#edf3f2;color:#45636a;font-size:11px;font-weight:700;margin:0 5px 7px 0}.dark-panel{background:#143440;border-radius:18px;color:#fff;padding:27px}.dark-panel h3{color:#fff}.dark-panel p{color:#adc7c8}.dark-panel .chip{background:#28525a;color:#d8f0ec}.number-badge{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;background:#dff3ed;color:#117d79;font-weight:800;font-size:14px}.compare-table{width:100%;border-collapse:collapse;font-size:14px}.compare-table th{text-align:left;font-size:11px;color:#7d9398;letter-spacing:1px;border-bottom:1px solid #ccdad9;padding:12px}.compare-table td{padding:16px 12px;vertical-align:top;border-bottom:1px solid #e3eceb;line-height:1.5}.compare-table td:first-child{font-weight:700;color:#304959}.compare-table tr:last-child td{border:0}.tag{display:inline-block;padding:5px 9px;border-radius:5px;background:#e0f2eb;color:var(--teal);font-size:10px;font-weight:800}.notes-panel{position:absolute;z-index:10;bottom:58px;left:20px;right:20px;background:#102b36;color:#eaf6f1;border-radius:12px 12px 0 0;padding:18px 25px;box-shadow:0 -10px 30px rgba(0,0,0,.14);font-size:13px;line-height:1.6}.notes-panel p{margin:5px 0 0}.notes-tag{font-size:10px;color:#8bdac3;letter-spacing:2px;font-weight:800}.bottom-bar{height:56px;flex:none;background:#f7f9f8;border-top:1px solid #dce5e5;position:relative;display:flex;align-items:center;justify-content:space-between;padding:0 24px}.progress-track{position:absolute;left:0;right:0;top:-2px;height:2px;background:transparent}.progress-track div{height:100%;width:0;background:var(--teal);transition:width .25s}.bottom-info{display:flex;gap:27px;align-items:center;font-size:11px;color:#667a81}.bottom-info #slideCounter{font-weight:800;color:#1a4b53;letter-spacing:2px}.keyboard-hint{color:#9aadad}.bottom-controls{display:flex;gap:8px}.bottom-controls button{border:1px solid #d4e0df;background:#fff;border-radius:7px;width:34px;height:32px;color:#32505a}.bottom-controls button:hover{background:#e7f3ef}.bottom-controls button:disabled{opacity:.35;cursor:default}.slide-cover{background:#122f3a;color:white;padding:0}.slide-cover:after,.slide-end:after{color:#789da1}.cover-bg{position:absolute;inset:0;background:radial-gradient(circle at 72% 50%,rgba(48,122,124,.5),transparent 34%),radial-gradient(circle at 88% 7%,rgba(248,192,90,.13),transparent 24%),linear-gradient(132deg,#102b37 5%,#173d45 100%)}.cover-orbit{position:absolute;border:1px solid rgba(176,222,204,.2);border-radius:50%;width:660px;height:660px;right:-80px;top:35px;transform:rotate(-25deg)}.cover-orbit:after{content:"";position:absolute;width:460px;height:460px;border-radius:50%;border:1px solid rgba(176,222,204,.16);left:96px;top:92px}.cover-content{position:absolute;left:78px;top:78px;z-index:2}.cover-overline{font-size:13px;letter-spacing:5px;color:#b4d0ca;font-weight:700}.cover-title{font-size:112px!important;line-height:1.12!important;letter-spacing:8px!important;color:#fff!important;margin:75px 0 15px!important}.cover-tagline{font-size:30px;color:#eff9f4;line-height:1.5;letter-spacing:1px}.cover-desc{font-size:17px;color:#aacac9;margin-top:16px!important}.cover-meta{margin-top:104px;display:flex;gap:22px;align-items:center;font-size:12px;color:#a5c0c0}.cover-meta .bar{width:30px;height:1px;background:#6b9594}.device{position:absolute;right:88px;top:116px;width:294px;height:408px;z-index:1;filter:drop-shadow(20px 31px 27px rgba(0,0,0,.28))}.device-body{position:absolute;left:44px;top:72px;width:213px;height:287px;background:linear-gradient(140deg,#f5f2e9,#dce5df);border-radius:105px 105px 74px 74px;box-shadow:inset -15px -12px 24px rgba(36,76,73,.13),inset 10px 9px 20px rgba(255,255,255,.9)}.device-screen{position:absolute;left:79px;top:108px;width:143px;height:137px;border-radius:72px;background:radial-gradient(circle at 48% 60%,#4bd0b9,#0b5362 69%);box-shadow:inset 0 0 18px #123d4d,0 0 30px rgba(63,195,176,.55)}.device-eye{position:absolute;top:166px;width:13px;height:19px;background:#e9fff4;border-radius:9px}.device-eye.one{left:126px}.device-eye.two{left:166px}.device-mouth{position:absolute;top:197px;left:139px;width:27px;height:14px;border-bottom:4px solid #e9fff4;border-radius:0 0 30px 30px}.device-neck{position:absolute;left:119px;top:349px;width:68px;height:28px;background:#e5e8dd;border-radius:0 0 15px 15px}.device-base{position:absolute;left:66px;top:375px;width:177px;height:25px;background:#f3f0e7;border-radius:50%;box-shadow:0 14px 18px rgba(0,0,0,.18)}.device-bubble{position:absolute;right:252px;top:28px;min-width:260px;padding:15px 20px;background:#fff;color:#20565b;border-radius:18px 18px 4px 18px;font-size:17px;font-weight:700;line-height:1.5;box-shadow:0 10px 25px rgba(0,0,0,.15)}.cover-caption{position:absolute;right:145px;bottom:118px;color:#b5cecb;font-size:11px;letter-spacing:2px}.slide-end{background:#123441;color:#fff}.slide-end h2{color:#fff}.slide-end .eyebrow{color:#9bd8c6}.end-circle{position:absolute;border-radius:50%;width:600px;height:600px;background:radial-gradient(circle,#28666a,#153c46 70%);right:-80px;top:65px}.end-content{position:relative;z-index:2}.end-quote{font-size:46px;line-height:1.45;max-width:850px;font-weight:800;letter-spacing:-1px;margin-top:105px!important}.end-bottom{display:flex;gap:18px;margin-top:69px}.end-bottom span{border-top:1px solid #67999b;padding-top:12px;width:195px;font-size:14px;color:#c0ded6}.end-thanks{margin-top:76px!important;color:#91baba;font-size:18px;letter-spacing:2px}
/* slide-specific diagrams */
.problem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px;margin-top:42px}.problem-card{height:228px;background:#fff;border:1px solid #e4ecec;border-radius:16px;padding:23px}.problem-card .num{font-size:12px;color:#a8b9ba;font-weight:800}.problem-card h3{font-size:23px;margin:26px 0 14px}.problem-card p{font-size:14px;line-height:1.65;color:#697b83}.position-center{margin-top:30px;text-align:center;background:#173b43;color:#fff;padding:18px;border-radius:12px;font-size:22px;font-weight:800}.four-pillar{margin-top:40px}.four-pillar .soft-card{height:251px}.seven-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin-top:32px}.seven-item{background:#fff;border:1px solid #e5eeee;border-radius:13px;padding:20px;height:140px}.seven-item:last-child{grid-column:span 2;background:#e4f4ed}.seven-item strong{display:block;font-size:17px;margin-bottom:10px}.seven-item p{font-size:12px;line-height:1.5;color:#60727a}.day-grid{display:grid;grid-template-columns:1fr 1fr;gap:19px;margin-top:31px}.day-card{min-height:211px;background:#fff;border:1px solid #e3ebeb;border-radius:15px;padding:22px 26px;position:relative}.day-time{font-size:11px;font-weight:800;color:#0f7e77;letter-spacing:2px}.day-card h3{font-size:20px;margin:16px 0 10px}.day-card p{font-size:16px;line-height:1.55;color:#45616a;max-width:430px}.day-num{position:absolute;right:23px;top:20px;font-size:44px;font-weight:800;color:#dfe9e8}.arch-main{display:grid;grid-template-columns:repeat(5,1fr);gap:11px;margin-top:33px}.arch-layer{background:#fff;border:1px solid #e1eae9;border-radius:13px;padding:18px;min-height:210px}.arch-layer span{font-size:10px;color:#81a3a5;letter-spacing:2px;font-weight:800}.arch-layer h3{font-size:20px;margin:22px 0 10px}.arch-layer p{font-size:12px;color:#63777c;line-height:1.6}.arch-bottom{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}.arch-strip{border-radius:10px;padding:13px 17px;background:#e4f2ed;font-size:14px}.arch-strip b{color:#0c756e;margin-right:16px}.clock-row{display:flex;gap:13px;margin-top:24px}.clock{flex:1;border-top:2px solid #93c8bb;padding:13px 3px}.clock b{font-size:17px}.clock p{font-size:11px;color:#718188;margin-top:6px}.decision-line{display:flex;gap:6px;align-items:center;margin-top:32px}.decision-step{flex:1;text-align:center;border-radius:10px;background:#fff;border:1px solid #e1ecea;padding:18px 4px;font-weight:700;font-size:13px}.decision-line .a{color:#86a5a1;font-size:15px}.policy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:28px}.policy-grid .soft-card{min-height:170px;padding:20px}.policy-grid h3{font-size:16px}.policy-grid p{font-size:12px}.conversation-line{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:42px}.conversation-step{border-top:3px solid var(--teal);padding:17px 8px 0}.conversation-step .t{font-size:22px;font-weight:800;color:#137b75}.conversation-step b{display:block;margin:16px 0 8px;font-size:17px}.conversation-step p{font-size:12px;color:#637982;line-height:1.5}.conversation-step:nth-child(even){border-color:#f0bf65}.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:38px}.mode-card{height:350px;border-radius:18px;background:#fff;border:1px solid #e0e9e8;padding:31px}.mode-card.emphasis{background:#163a43;color:#fff;border:0}.mode-card h3{font-size:26px;margin:15px 0}.mode-card p{font-size:14px;line-height:1.7;color:#687b82}.mode-card.emphasis p{color:#b9d2d0}.mode-card ul{padding-left:18px;margin:30px 0 0;font-size:14px;line-height:2.1}.memory-stack{display:grid;grid-template-columns:1.08fr .92fr;gap:24px;margin-top:28px}.memory-flow{display:flex;flex-direction:column;gap:10px}.memory-row{display:flex;align-items:center;gap:12px;padding:15px 17px;background:#fff;border-radius:11px;border:1px solid #e3eceb}.memory-row .number-badge{flex:none}.memory-row b{font-size:15px}.memory-row span:last-child{margin-left:auto;font-size:11px;color:#75878b}.memory-example{background:#e6f3ed;border-radius:18px;padding:27px}.memory-example h3{font-size:17px;margin-bottom:18px}.memory-note{background:#fff;border-radius:13px;padding:19px;margin:11px 0;font-size:14px;line-height:1.6}.memory-note small{display:block;font-size:10px;color:#8b9c9d;margin-top:12px}.boundary{display:grid;grid-template-columns:1fr 110px 1fr;gap:11px;align-items:center;margin-top:44px}.boundary-box{height:300px;border-radius:17px;padding:28px;background:#e4f2ed}.boundary-box.cloud{background:#f0f3f3}.boundary-box h3{font-size:23px;margin-bottom:25px}.boundary-box p{font-size:15px;line-height:1.9}.boundary-divider{text-align:center;color:#629b94;font-size:13px;font-weight:800}.boundary-divider span{display:block;font-size:30px;margin:10px}.reliability-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px;margin-top:32px}.reliability-card{height:172px;background:#fff;border:1px solid #e1eae9;border-radius:14px;padding:21px}.reliability-card h3{font-size:17px;margin:14px 0 9px}.reliability-card p{font-size:12px;line-height:1.6;color:#687c81}.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:33px}.proof-grid .soft-card{height:160px;padding:19px}.proof-grid .value{font-size:35px;white-space:nowrap}.proof-grid .label{font-size:12px;line-height:1.4}.proof-disclaimer{font-size:12px;color:#617881;background:#edf2f1;padding:13px 17px;border-radius:10px;margin-top:24px!important}.demo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:29px}.demo-step{background:#fff;border-radius:13px;border:1px solid #e1eae9;padding:19px 20px;height:155px}.demo-step .n{font-size:12px;color:#0c7d76;font-weight:800}.demo-step h3{font-size:17px;margin:16px 0 9px}.demo-step p{font-size:12px;color:#697f84;line-height:1.45}.alignment-columns{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:30px}.alignment-columns .soft-card{min-height:347px}.alignment-columns h3{font-size:19px}.alignment-columns li{font-size:13px;padding:11px 0}.alignment-columns .soft-card:first-child{border-top:4px solid #e5ab55}.alignment-columns .soft-card:last-child{border-top:4px solid #48ab96}
@media(max-width:880px){.app{grid-template-columns:0 minmax(0,1fr)}.rail{display:none}.toolbar{padding:0 12px}.toolbar-actions .toolbar-btn:first-child,.toolbar-actions .toolbar-btn:nth-child(2){display:none}.stage{padding:7px}.keyboard-hint{display:none}.bottom-bar{padding:0 12px}}@media print{html,body{width:auto;height:auto;overflow:visible;background:#fff}.app{display:block;height:auto}.rail,.toolbar,.bottom-bar,.notes-panel{display:none!important}.main,.stage,.slide-viewport,.slides{display:block;width:auto;height:auto;padding:0;background:#fff;box-shadow:none;transform:none!important;overflow:visible}.slide{position:relative;display:block!important;width:1280px;height:720px;page-break-after:always;break-after:page;-webkit-print-color-adjust:exact;print-color-adjust:exact}@page{size:13.333in 7.5in;margin:0}}