:root{--bg:#FAFAF7;--bg2:#F2F1EC;--ink:#141416;--body:#4A4A50;--muted:#8A8A90;--line:#E7E5DF;--accent:#7C5CFF;--coral:#FF5A3C;--green:#0E9F6E;--serif:"Songti SC","STSong","SimSun",Georgia,"Times New Roman",serif;--sans:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;--mono:"Cascadia Mono",Consolas,"Microsoft YaHei UI",monospace}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;color-scheme:light}
body{background:var(--bg);color:var(--body);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:clip}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
b,strong{font-weight:600}
section[id]{scroll-margin-top:78px}
.wrap{width:min(1240px,calc(100% - 48px));margin:0 auto}
.eyebrow{font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600;display:inline-flex;align-items:center;gap:8px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}
.eyebrow.c::before{background:var(--coral)}
.eyebrow.m::before{background:#1D4ED8}
h1,h2,h3{font-family:var(--serif);color:var(--ink);font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(30px,4.2vw,58px);line-height:1.18;margin-top:16px}
h3{font-size:20px;line-height:1.35}
.lede{font-size:clamp(16px,1.25vw,19px);line-height:1.75;color:var(--body);max-width:640px}
.small{font-size:13.5px;color:var(--muted);line-height:1.6}
.btn{display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 22px;border-radius:999px;font-weight:600;font-size:14.5px;border:1px solid var(--line);background:#fff;color:var(--ink);transition:transform .2s,box-shadow .2s,background .2s;white-space:nowrap;cursor:pointer}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px -12px rgba(0,0,0,.35)}
.btn.dark{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn.ghost{background:transparent}
.blk{padding:130px 0}
.blk.tight{padding:110px 0}
.head{max-width:820px}
.head .lede{margin-top:22px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.two h2{font-size:clamp(28px,3.4vw,46px)}
.two .lede{margin-top:20px}
.two.dcols{grid-template-columns:.9fr 1.1fr}
.shot{border-radius:16px;overflow:hidden;background:#EEEEE9;border:1px solid var(--line);box-shadow:0 30px 60px -34px rgba(20,20,22,.45),0 1px 2px rgba(0,0,0,.05)}
.shot img{width:100%;height:100%;object-fit:cover}
.cap{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.6}
/* images that are shared between several places live in bg.css as classes, so the inliner embeds each file once */
.bg-img{background-size:cover;background-position:center;background-repeat:no-repeat}

/* nav: full-width bar on the hero, collapses into a 960px pill once the hero stage scrolls away */
.nav{position:fixed;left:50%;top:0;transform:translateX(-50%);width:100%;height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 28px;z-index:100;background:rgba(250,250,247,.74);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid transparent;border-bottom-color:rgba(0,0,0,.05);border-radius:0;transition:width .5s,top .5s,height .5s,border-radius .5s,border-color .5s,background .5s,padding .5s}
.nav.pill{top:10px;width:min(960px,calc(100% - 32px));height:52px;border-radius:999px;border-color:rgba(26,26,25,.08);background:rgba(250,250,247,.88);padding:0 12px 0 22px;box-shadow:0 10px 30px -18px rgba(0,0,0,.35)}
.nav .brand{font-family:var(--serif);font-weight:700;color:var(--ink);font-size:18px;display:flex;align-items:baseline}
.nav .brand span{font-family:var(--sans);font-weight:500;color:var(--muted);font-size:13px;margin-left:12px}
.nav nav{display:flex;gap:28px;font-size:14px;color:var(--body);font-weight:500}
.nav nav a{transition:color .2s}
.nav nav a:hover{color:var(--ink)}
.nav .btn{height:38px;font-size:13.5px;padding:0 16px}
.download-menu{position:relative;flex:none}
.download-trigger{font-family:var(--sans);cursor:pointer;user-select:none}
.download-trigger svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s}
.download-popover{position:absolute;top:calc(100% + 10px);right:0;width:208px;padding:7px;background:rgba(255,255,255,.97);border:1px solid rgba(20,20,22,.1);border-radius:15px;box-shadow:0 18px 48px -18px rgba(0,0,0,.3);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-6px);transition:opacity .18s,visibility .18s,transform .18s;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.download-popover::before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.download-popover a{display:flex;flex-direction:column;gap:1px;padding:10px 12px;border-radius:10px;color:var(--ink);transition:background .16s}
.download-popover a:hover,.download-popover a:focus-visible{background:var(--bg2);outline:none}
.download-popover span{font-size:14px;font-weight:650}
.download-popover small{font-size:11.5px;color:var(--muted)}
@media (hover:hover){.download-menu:hover .download-popover{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}.download-menu:hover .download-trigger svg{transform:rotate(180deg)}}
.download-menu.is-open .download-popover{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
.download-menu.is-open .download-trigger svg{transform:rotate(180deg)}

/* hero: left = tag / thesis / intro / chips / CTAs, right = the live stage in a 16:9 frame, below = tool marquee */
.hero{min-height:100svh;display:flex;flex-direction:column;padding:104px 0 28px}
.hero-grid{flex:1 0 auto;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:52px;align-items:center;align-content:center}
.hero-left{display:flex;flex-direction:column;align-items:flex-start;gap:28px}
.hero-tag{display:inline-block;padding:6px 11px;border-radius:8px;background:#EDE8FF;color:#3B2AA8;font-weight:700;font-size:15px;line-height:1.35}
.hero h1{font-size:clamp(36px,4vw,58px);line-height:1.16;letter-spacing:-.01em}
.hero-intro{font-size:18px;line-height:1.6;color:var(--ink);max-width:520px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px}
.hero-chips span{display:inline-flex;align-items:center;padding:8px 12px;border:1px solid #D9D8D2;border-radius:10px;background:transparent;font-size:14.5px;line-height:1.3;color:#4F4F55;white-space:nowrap}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.hero .cta .btn{height:56px;padding:0 30px;font-size:15.5px}
.hero-media{position:relative;min-width:0}
.demo-wall{position:absolute;inset:0;overflow:hidden}
.demo-wall i,.demo-wall b{position:absolute;inset:-4%;display:block;background-size:cover;background-position:center}
.demo-wall i{filter:blur(8px);transform:scale(1.05)}
.demo-wall b{opacity:.42}
.demo-wall::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,20,22,.22),rgba(20,20,22,.08) 40%,rgba(20,20,22,.3))}
.hero-win{position:relative;width:100%;aspect-ratio:16/9;border-radius:16px;border:1px solid rgba(26,26,25,.08);overflow:hidden;background:#EEEEE9;box-shadow:0 30px 60px -36px rgba(20,20,22,.35)}
.stage--hero{position:absolute;left:0;top:0;width:1200px;height:675px;transform:scale(var(--hs,1));transform-origin:0 0}
.hero-tabs,.demo-chips{position:absolute;left:50%;bottom:32px;transform:translateX(-50%);display:flex;gap:2px;padding:4px;border-radius:999px;background:rgba(51,51,51,.4);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);z-index:6}
.hero-tabs button,.demo-chips button{position:relative;isolation:isolate;overflow:hidden;appearance:none;border:0;height:36px;padding:0 14px;border-radius:999px;background:transparent;color:rgba(255,255,255,.82);font:600 12.5px var(--sans);cursor:pointer;display:inline-flex;align-items:center;gap:8px;white-space:nowrap;transition:background .25s,color .25s}
.hero-tabs button.on,.demo-chips button.on{background:rgba(255,255,255,.16);color:#fff}
.hero-tabs{position:static;transform:none;margin:14px auto 0;width:fit-content;background:#E8E7E0;backdrop-filter:none;-webkit-backdrop-filter:none}
.hero-tabs button{color:var(--body)}
.hero-tabs button.on{background:var(--ink);color:#fff}
.marquee{margin-top:70px;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.marquee + .marquee{margin-top:16px}
.mq-track{display:flex;gap:48px;width:max-content;padding-right:48px;animation:mq 34s linear infinite}
.mq-a .mq-track{animation-duration:38s}
.mq-b .mq-track{animation-duration:42s;animation-direction:reverse}
.marquee span{font-size:26px;font-weight:700;color:#A3A29C;letter-spacing:-.01em;white-space:nowrap;line-height:1}
.mq-a span{color:#6F6E6A}
.marquee:hover .mq-track{animation-play-state:paused}
@keyframes mq{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.mq-track{animation:none;flex-wrap:wrap;width:auto;gap:20px 40px}.marquee{mask-image:none;-webkit-mask-image:none}}
.hero-tabs .ring{width:16px;height:16px;transform:rotate(-90deg);display:none}
.hero-tabs button.on .ring{display:block}
.hero-tabs .ring circle{fill:none;stroke:rgba(255,255,255,.28);stroke-width:2.2}
.hero-tabs .ring .p{stroke:#fff;stroke-dasharray:50.27;stroke-dashoffset:50.27;stroke-linecap:round}
.demo-chips button i{position:absolute;left:0;top:0;bottom:0;width:0;background:rgba(255,255,255,.2);z-index:-1}
.demo-chips button em{font-style:normal;font-size:10.5px;color:rgba(255,255,255,.55)}

/* about me: offset two-column, then the profile card, timeline, numbers, skills */
.me-sec{padding:96px 0 88px;background:var(--bg)}
.me-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}
.me-grid h2{font-size:clamp(30px,3.6vw,50px);position:sticky;top:110px}
.lit{font-size:clamp(17px,1.35vw,21px);line-height:1.85;color:var(--ink);margin-bottom:18px;max-width:640px}
.lit span{opacity:.15}
.lit .hi{font-weight:600}
.lit .hi.on{color:var(--accent)}
.profile{background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px 26px 22px;box-shadow:0 30px 60px -40px rgba(20,20,22,.35);margin-top:28px}
.profile .top{display:flex;align-items:center;gap:16px}
.profile .mono{width:62px;height:62px;border-radius:50%;background:var(--ink);color:#fff;font-family:var(--serif);font-size:26px;font-weight:700;display:grid;place-items:center;flex:none}
.profile .who{font-weight:600;font-size:18px;color:var(--ink)}
.profile .role{font-size:13px;color:var(--muted);margin-top:2px}
.profile dl{margin-top:16px;border-top:1px solid var(--line)}
.profile .r{display:grid;grid-template-columns:48px 1fr;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13.5px;line-height:1.5}
.profile dt{color:var(--muted);font-size:11.5px;letter-spacing:.06em;padding-top:3px}
.profile dd{color:var(--ink)}
.profile dd small{display:block;color:var(--muted);font-size:12px}
.profile .now{margin-top:14px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink)}
.profile .now i{width:8px;height:8px;border-radius:50%;background:var(--coral);box-shadow:0 0 0 4px #FFE4DD}
.tline{margin-top:84px;position:relative;padding-top:30px}
.tline .axis{position:absolute;left:0;right:0;top:0;height:2px;background:var(--line)}
.tline .axis i{display:block;height:100%;background:var(--ink);transform-origin:left;transform:scaleX(0)}
.tline ol{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.tline li{position:relative;font-size:13px;line-height:1.55;color:var(--body)}
.tline li::before{content:"";position:absolute;left:0;top:-36px;width:11px;height:11px;border-radius:50%;background:#fff;border:2px solid var(--ink)}
.tline li.now::before{background:var(--coral);border-color:var(--coral);box-shadow:0 0 0 5px #FFE4DD}
.tline .y{font-weight:700;color:var(--ink);font-size:12.5px;letter-spacing:.04em;font-variant-numeric:tabular-nums}
.tline b{display:block;color:var(--ink);font-weight:600;margin-top:3px;font-size:14px}
.skills-head{margin-top:64px;padding-top:32px;border-top:1px solid var(--line);display:flex;align-items:baseline;justify-content:space-between;gap:12px 32px;flex-wrap:wrap}
.skills-head .note{font-size:14px;color:var(--muted)}
.skills{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:20px}
.skill{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 22px 24px}
.skill h3{font-size:16px}
.skill p{font-size:13.5px;line-height:1.65;margin-top:8px;color:var(--body)}
.awards{display:flex;flex-wrap:wrap;gap:10px 30px;margin-top:26px}
.aw{font-size:14px;font-weight:700;color:var(--ink);white-space:nowrap}
.aw small{font-size:12.5px;font-weight:500;color:var(--muted);margin-right:8px;font-variant-numeric:tabular-nums;letter-spacing:.03em}
.lines{display:flex;gap:14px;flex-wrap:wrap;margin-top:44px}
.lines a{display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 22px;border-radius:14px;background:#fff;border:1px solid var(--line);font-weight:600;color:var(--ink);transition:transform .25s,box-shadow .25s}
.lines a:hover{transform:translateY(-2px);box-shadow:0 20px 40px -28px rgba(20,20,22,.5)}
.lines a i{width:8px;height:8px;border-radius:50%;background:var(--accent)}
.lines a.c i{background:var(--coral)}

.sticky{position:sticky;top:110px}
.quote{margin-top:44px;font-family:var(--serif);font-size:clamp(19px,1.7vw,24px);line-height:1.75;color:var(--ink);background:#fff;border:1px solid var(--line);border-left:5px solid var(--accent);border-radius:18px;padding:30px 36px;max-width:980px}
.quote.c{border-left-color:var(--coral)}
.quote b{color:var(--coral)}

/* the problem, shown as a side-by-side comparison stage (sticky) */
.tyai-sec{position:relative;height:185vh;background:var(--bg2)}
.contrast-sticky{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;justify-content:center;padding-top:78px}
.tyai-head{padding-bottom:22px}
.tyai-head h2{font-size:clamp(26px,3.1vw,42px);margin-top:10px}
.tyai-head .lede{margin-top:10px}
.contrast{display:grid;grid-template-columns:1fr 1px 1fr;gap:0 40px;height:min(64vh,600px);min-height:480px;width:100%}
.cline{width:1px;height:100%;background:#8A8A90;justify-self:center}

/* concept: the harness reads the workspace, then plans */
.concept-sec{position:relative;height:230vh;background:var(--bg)}
.concept-sticky{position:sticky;top:0;height:100vh;display:flex;align-items:center;overflow:hidden;padding-top:64px}
.concept-inner{width:min(1240px,calc(100% - 48px));margin:0 auto}
.concept-head{display:grid;grid-template-columns:1.35fr 1fr;gap:12px 40px;align-items:end}
.concept-head h2{font-size:clamp(26px,3vw,40px);margin-top:8px}
.concept-head .lede{font-size:15px;line-height:1.7;max-width:none;margin:0 0 6px}

/* live demo: sticky stage, scroll-driven */
.demo-sec{position:relative;height:660vh;background:var(--bg2)}
#demo-pin{height:100svh;position:sticky;top:0;overflow:hidden}
.demo-bleed{position:absolute;inset:0;opacity:.3}
.demo-win-wrap{position:relative;height:100%;display:grid;place-items:center;transform:translateY(46vh)}
.demo-wrap{position:relative;width:min(100%,calc((100svh - 170px) * 16 / 9));aspect-ratio:16/9;border-radius:12px;border:1px solid rgba(26,26,25,.06);overflow:hidden;background:#EEEEE9}
#stagecam{position:absolute;inset:0;transform-origin:0 0}
.demo-wrap .stage{position:absolute;left:0;top:0;transform-origin:0 0;transform:scale(var(--s,1))}
.demo-cap{position:absolute;left:max(24px,calc(50% - 620px));bottom:22px;max-width:520px;z-index:5;pointer-events:none;background:rgba(250,250,247,.9);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.7);border-radius:12px;padding:10px 14px 11px;box-shadow:0 10px 30px -18px rgba(0,0,0,.35);opacity:0}
.demo-cap .k{font-family:var(--serif);font-size:16px;color:var(--ink);font-weight:700;line-height:1.3}
.demo-cap p{font-size:13.5px;line-height:1.5;color:var(--body);margin-top:3px}
.demo-head-layer{position:absolute;top:14vh;left:0;right:0;z-index:3;transform-origin:50% 0}
.demo-head-layer .lede{margin-top:22px;font-size:16px;max-width:720px}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--body);margin-top:14px}
.legend span{display:inline-flex;align-items:center;gap:7px}
.legend .h{width:12px;height:12px;background:#F24E1E;border-radius:2px}
.legend .a{width:12px;height:12px;border:1.5px dashed var(--accent);border-radius:999px}
.demo-head-layer .hint{margin-top:34px;font-size:13px;color:var(--muted);display:inline-flex;align-items:center;gap:8px}
.demo-head-layer .hint::before{content:"↓";font-weight:700}
.demo-chips{opacity:0;left:auto;right:max(24px,calc(50% - 620px));transform:none;bottom:26px}
.demo-ui-m{display:none}
.ctrls{display:flex;gap:8px;align-items:center}
.ctrls button{appearance:none;border:1px solid var(--line);background:#fff;height:40px;padding:0 14px;border-radius:999px;display:inline-flex;align-items:center;gap:8px;cursor:pointer;color:var(--ink);font:600 13px var(--sans)}
.prog{height:4px;border-radius:2px;background:#E4E3DC;margin-top:14px;position:relative;cursor:pointer}
.prog i{position:absolute;left:0;top:0;bottom:0;background:var(--accent);border-radius:2px;width:0}

/* editors: sticky coverflow with two fixed highlight bands */
.editors{height:165vh;position:relative;background:var(--bg)}
.editors .pin{position:sticky;top:10vh;height:80vh;overflow:hidden;display:flex;align-items:center}
.editors .e-head{position:absolute;left:0;right:0;top:0;text-align:center;z-index:2;padding:0 20px}
.editors .e-head h2{margin-top:12px;font-size:clamp(28px,3.4vw,46px)}
.editors .e-head p{margin:12px auto 0;max-width:720px;font-size:15px;color:var(--body)}
.track{display:flex;gap:4vw;padding:0 calc((100vw - var(--cw))/2);--cw:min(780px,56vw);will-change:transform;margin-top:18vh}
.ecard{flex:0 0 var(--cw);margin:0}
.ecard .shot{aspect-ratio:16/9}
.ecard figcaption{margin-top:16px;font-size:14px;color:var(--muted);text-align:center;opacity:0;transition:opacity .3s}
.ecard.on figcaption{opacity:1}
.ecard figcaption b{display:block;color:var(--ink);font-size:16px;font-weight:600;margin-bottom:3px}
.e-hl{position:absolute;z-index:3;pointer-events:none;border:1.5px solid var(--accent);background:rgba(124,92,255,.08);border-radius:8px}
.e-hl span{position:absolute;left:0;top:-26px;font-size:12px;font-weight:600;color:var(--accent);white-space:nowrap;background:var(--bg);padding:2px 6px;border-radius:6px}

/* harness index rows */
.harness-sec{padding:90px 0 90px}
.hrows{margin-top:40px;border-top:1px solid var(--line)}
.hrows li{display:grid;grid-template-columns:44px 170px 1fr auto;gap:18px;align-items:center;padding:17px 0;border-bottom:1px solid var(--line);cursor:pointer;transition:background .2s}
.hrows li:hover{background:#fff}
.hrows .n{font-family:var(--sans);font-weight:700;color:var(--accent);font-size:13px;letter-spacing:.06em}
.hrows b{font-family:var(--serif);font-size:18px;color:var(--ink)}
.hrows span.t{font-size:15px;color:var(--body)}
.hrows i{font-style:normal;font-size:12px;font-weight:600;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:5px 11px;white-space:nowrap;background:#fff}
.hrows li:hover i{color:var(--ink);border-color:var(--ink)}

/* tianhua wipe (pinned) */
.wipe-sec{height:100vh;position:relative;overflow:hidden;background:#101012}
.wipe{position:absolute;inset:0}
.wipe .before,.wipe .after{position:absolute;inset:0;background-size:cover;background-position:center}
.wipe .after{clip-path:inset(0 0 0 100%)}
.wipe .handle{position:absolute;top:0;bottom:0;left:100%;width:2px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.25);z-index:3}
.wipe .handle::after{content:"⇆";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:44px;height:44px;border-radius:50%;background:#fff;color:var(--ink);display:grid;place-items:center;font-size:16px;font-weight:700}
.wipe .lab{position:absolute;bottom:34px;font-size:12px;letter-spacing:.1em;font-weight:600;padding:9px 14px;border-radius:999px;background:rgba(0,0,0,.55);color:#fff;backdrop-filter:blur(6px);z-index:3}
.wipe .lab.b{left:32px}
.wipe .lab.a{right:32px}
.wipe .shade{position:absolute;inset:0;background:linear-gradient(rgba(16,16,18,.82),rgba(16,16,18,.42) 38%,rgba(16,16,18,0) 62%);z-index:2}
.t-head{position:absolute;left:0;right:0;top:11vh;text-align:center;z-index:4;padding:0 20px}
.t-head h2,.t-head p{color:#fff}
.t-head p{margin:14px auto 0;max-width:760px;font-size:15.5px;opacity:.85}
.t-head .eyebrow{color:rgba(255,255,255,.7)}

/* tags */
.tagbox{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 20px;font-family:var(--mono);font-size:12.5px;line-height:1.75}
.tagbox .lb{font-family:var(--sans);font-size:12px;color:var(--muted);margin-bottom:8px;letter-spacing:.06em}
.tagbox.dim{color:var(--muted)}
.tagbox .tg{display:inline-block;margin:0 6px 6px 0;padding:2px 8px;border-radius:6px;background:#F3F3F0;color:var(--ink)}
.tags-grow .tg{opacity:0;transform:translateY(6px);transition:opacity .25s,transform .25s}
.tags-grow .tg.on{opacity:1;transform:none}
.tags-grow .cnt{font-family:var(--sans);font-size:12px;color:var(--accent);font-weight:600;margin-left:4px}
.funnel{margin-top:36px}
.funnel .bar{height:38px;border-radius:9px;background:var(--accent);color:#fff;display:flex;align-items:center;padding:0 14px;font-size:13.5px;font-weight:600;margin-bottom:8px;transform-origin:left}
.funnel .bar.end{background:var(--ink)}
.map{display:grid;grid-template-columns:1fr auto 1fr;gap:10px 16px;align-items:center;font-size:14.5px;margin-top:32px}
.map .a,.map .b{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;color:var(--ink);transition:opacity .3s,border-color .3s,background .3s}
.map .b{border-color:#D9D0FF;background:#FBFAFF}
.map .ar{color:#C4C7D4;font-size:20px;transition:opacity .3s,color .3s}
.map-scrub .a,.map-scrub .b,.map-scrub .ar{opacity:.22}
.map-scrub .a.on,.map-scrub .ar.on,.map-scrub .b.on{opacity:1}
.map-scrub .ar.on{color:var(--accent)}
.map-scrub .b.on{border-color:var(--accent);background:#F3EFFF}
.shots2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}

/* tianhua: six-step PM workflow band, pinned */
.thflow-sec{position:relative;height:230vh;background:var(--bg2)}
.thflow-sticky{position:sticky;top:0;height:100vh;display:flex;align-items:center;overflow:hidden;padding-top:64px}
.thflow-inner{width:min(1240px,calc(100% - 48px));margin:0 auto}
.thflow-head{display:grid;grid-template-columns:1.35fr 1fr;gap:12px 40px;align-items:end}
.thflow-head h2{font-size:clamp(26px,3vw,40px);margin-top:8px}
.thflow-head .lede{font-size:15px;line-height:1.7;max-width:none;margin:0 0 6px}
.steps{display:flex;gap:8px;margin-top:18px}
.step{flex:1;display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:12.5px;font-weight:600;color:var(--muted);opacity:.45;transition:opacity .3s,color .3s,border-color .3s;white-space:nowrap}
.step.on{opacity:1;color:var(--ink);border-color:var(--coral)}
.step i{font-style:normal;font-weight:700;color:var(--coral);font-size:11px;letter-spacing:.04em}
.fcards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px}
.fcard{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px;min-height:236px;display:grid;grid-template-columns:1fr 128px;gap:14px;opacity:0;transform:translateY(24px)}
.fcard .q{font-size:11px;color:var(--coral);font-weight:700;letter-spacing:.08em}
.fcard h3{font-family:var(--serif);font-size:15.5px;line-height:1.4;margin-top:6px}
.fcard p{font-size:12.5px;line-height:1.6;color:var(--body);margin-top:8px}
.fcard p.src{color:var(--muted);font-size:11.5px}
.fcard ul{margin-top:8px;font-size:12.5px;line-height:1.55;color:var(--body)}
.fcard li{padding-left:12px;position:relative}
.fcard li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--coral)}
.fcard .num{font-family:var(--serif);font-size:24px;color:var(--ink);font-weight:700;line-height:1;margin-top:10px;white-space:nowrap}
.fcard .num em{font-style:normal;font-size:12px;color:var(--muted);margin-left:6px;font-family:var(--sans);font-weight:500}
.fcard .ev{border-radius:10px;overflow:hidden;background-color:#EEEEE9;border:1px solid var(--line);align-self:start;aspect-ratio:4/5;background-size:cover;background-position:center}
.fcard .ev.split{display:grid;grid-template-rows:1fr 1fr;gap:2px;background:var(--line)}
.fcard .ev.split i{display:block;background-size:cover;background-position:center}
.thfoot{margin-top:14px;font-size:12.5px;color:var(--muted);display:flex;justify-content:space-between;gap:24px}

/* miaosi loop */
.loop{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:56px}
.lc{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 18px 22px;position:relative}
.lc .shot{aspect-ratio:16/9;border-radius:10px}
.lc h3{font-size:17px;margin-top:16px}
.ln{display:flex;gap:8px;align-items:center;font-size:13.5px;color:var(--body);margin-top:8px;line-height:1.4}
.tg2{font-size:11px;font-weight:700;padding:3px 8px;border-radius:999px;background:#EDEBE5;color:var(--ink);min-width:44px;text-align:center;flex-shrink:0}
.tg2.c{background:#FFE4DD;color:#C2410C}
.tg2.m{background:#E6F0FF;color:#1D4ED8}
.band{margin-top:48px}
.band svg{width:100%;height:auto;display:block}
.band-m{display:none;font-size:15px;font-weight:600;color:var(--ink);line-height:1.6;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:12px}
.band-m small{display:block;font-weight:400;color:var(--muted);font-size:12.5px;margin-top:4px}
.jd{margin-top:52px;border-top:1px solid var(--line);padding-top:26px;max-width:920px}
.jd p{font-size:15px;line-height:1.8;color:var(--body);margin-bottom:8px}
.jd p b{color:var(--ink)}
.jd .src{font-size:12.5px;color:var(--muted);margin-top:6px}

/* contact / closing: dark footer block */
.contact-sec{background:var(--ink);color:#EDECE7;padding:84px 0 36px;min-height:100svh;display:flex;align-items:center}
.ft-top{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.ft-name{font-family:var(--serif);font-size:clamp(40px,4.5vw,56px);font-weight:700;color:#fff;line-height:1}
.ft-nav{display:flex;gap:28px;font-size:14px;color:#C9C8C2;flex-wrap:wrap}
.ft-nav a:hover{color:#fff}
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;margin-top:64px}
.ft-tag{display:inline-block;padding:4px 10px;border-radius:7px;background:#EDE8FF;color:#3B2AA8;font-weight:700;font-size:14px;line-height:1.35}
.ft-rows{margin-top:22px;display:grid;gap:14px;font-size:16px;line-height:1.6}
.ft-rows div{display:flex;gap:6px;align-items:baseline}
.ft-rows dt{color:#A9A8A2;flex:none;white-space:nowrap;min-width:3.4em}
.ft-rows dt::after{content:"："}
.ft-rows dd{color:#F2F1EC}
.ft-rows a{text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(255,255,255,.35)}
.ft-rows a:hover{text-decoration-color:#fff}
.ft-card{background:#24242A;border-radius:20px;padding:34px 36px 32px;display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.ft-title{font-family:var(--serif);font-size:clamp(20px,2vw,26px);font-weight:700;color:#fff;line-height:1.3}
.ft-btn{display:flex;align-items:center;justify-content:center;width:100%;height:56px;border-radius:12px;background:var(--accent);color:#fff;font-weight:600;font-size:16px;transition:transform .2s,filter .2s}
.ft-btn:hover{transform:translateY(-1px);filter:brightness(1.08)}
.ft-downloads{display:grid;grid-template-columns:1fr 1fr;gap:12px;width:100%}
.ft-btn.resume{background:#fff;color:var(--ink)}
.ft-btn.ghost{background:transparent;border:1px solid rgba(255,255,255,.22);color:#F2F1EC}
.ft-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:64px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);font-size:13.5px;color:#A9A8A2}
.ft-bottom a{color:#F2F1EC;text-decoration:underline;text-underline-offset:4px}
.me .kv{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.7;margin-top:14px}
.me .kv b{color:var(--ink);white-space:nowrap}
.me .dot{width:9px;height:9px;border-radius:50%;flex:none;margin-top:10px}
.me .contact{margin-top:34px;font-size:16px;line-height:2;color:var(--ink)}
.me .contact span{color:var(--body)}
footer{padding:20px 0 30px;background:var(--ink)}
footer p{font-size:12px;color:#9C9B94;line-height:1.7;max-width:980px}

/* static (no sticky, no scrub) mode: phones and reduced motion */
.demo-static .demo-sec{height:auto;padding:80px 0 60px}
.demo-static #demo-pin{position:static;height:auto;overflow:visible;display:flex;flex-direction:column}
.demo-static .demo-head-layer{order:-1}
.demo-static .demo-bleed{position:relative;opacity:1;inset:auto;padding:24px 0 20px}
.demo-static .demo-win-wrap{transform:none}
.demo-static .demo-head-layer{position:static;transform:none;opacity:1;margin-bottom:24px}
.demo-static .demo-head-layer .hint{display:none}
.demo-static .demo-wrap{aspect-ratio:3/4;max-height:none}
.demo-static .demo-cap{position:static;opacity:1;max-width:none;width:min(1240px,calc(100% - 48px));margin:12px auto 0;padding:9px 12px}
.demo-static .demo-cap .k{font-size:14px}
.demo-static .demo-cap p{font-size:12.5px}
.demo-static .demo-chips{position:static;transform:none;opacity:1;right:auto;margin:18px auto 0;width:fit-content;max-width:100%;flex-wrap:wrap;justify-content:center;background:#E4E3DC;backdrop-filter:none}
.demo-static .demo-chips button{color:var(--body)}
.demo-static .demo-chips button.on{background:var(--ink);color:#fff}
.demo-static .demo-ui-m{display:block;padding:16px 0 0}
.demo-static.demo-wide .demo-wrap{aspect-ratio:16/9;width:min(100%,1240px);margin:0 auto}
.demo-static .concept-sec{height:auto;padding:80px 0}
.demo-static .concept-sticky{position:static;height:auto;display:block;overflow:visible;padding-top:0}
.demo-static .thflow-sec{height:auto;padding:80px 0}
.demo-static .thflow-sticky{position:static;height:auto;display:block;overflow:visible;padding-top:0}
.demo-static.demo-wide .demo-bleed{padding:8px 0 20px}

/* responsive */
@media (max-width:820px){
 .nav{padding:0 16px;height:58px}
 .nav.pill{height:48px;padding:0 8px 0 16px}
 .nav nav{display:none}
 .nav .brand{white-space:nowrap;font-size:17px}
 .nav .brand span{display:none}
 .nav .btn{height:34px;font-size:12.5px;padding:0 12px}
 .hero{min-height:0;display:block;padding-top:84px}
 .hero-grid{grid-template-columns:1fr;gap:30px}
 .hero h1{font-size:clamp(30px,8.8vw,42px)}
 .hero-left{gap:22px}
 .hero-intro{font-size:16px}
 .hero-chips span{white-space:normal;line-height:1.4}
 .hero .cta .btn{height:48px;padding:0 20px;font-size:14px}
 .hero-win{aspect-ratio:auto;border-radius:12px;box-shadow:none}
 .marquee{margin-top:40px}
 .marquee + .marquee{margin-top:12px}
 .marquee span{font-size:22px}
 .mq-track{gap:36px;padding-right:36px}
 .stage.stage--hero{position:relative;left:auto;top:auto;width:100%;height:auto;transform:none;display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:10px;background:#EEEEE9}
 .stage.stage--hero .rail,.stage.stage--hero .lpanel,.stage.stage--hero .section,.stage.stage--hero .toolbar,.stage.stage--hero .session,.stage.stage--hero .cur,.stage.stage--hero #hc5,.stage.stage--hero #hc6{display:none!important}
 .stage.stage--hero .rpanel{position:relative;grid-column:1/-1;width:100%;right:auto;height:400px;border-left:0;border-radius:10px;overflow:hidden}
 .stage.stage--hero .hcard{position:relative;left:auto!important;top:auto!important;width:auto!important;height:176px!important}
 .hero-tabs{margin-top:12px}
 .tyai-sec{height:auto;padding-bottom:80px}
 .contrast-sticky{position:static;height:auto;display:block;padding-top:96px}
 .contrast{grid-template-columns:1fr;height:auto;gap:24px}
 .cline{width:100%;height:1px}
 .wipe .shade{background:linear-gradient(rgba(16,16,18,.9),rgba(16,16,18,.62) 52%,rgba(16,16,18,0) 78%)}
 .me-grid,.two,.two.dcols,.contact-grid,.demo-head{grid-template-columns:1fr}
 .me-grid h2{position:static}
 .sticky{position:static}
 .quote{padding:22px 22px}
 .tline ol{grid-template-columns:1fr 1fr;gap:26px 18px}
 .tline li::before{top:-4px;left:-2px}
 .tline li{padding-left:18px}
 .tline .axis{display:none}
 .skills{grid-template-columns:1fr 1fr}
 .loop{grid-template-columns:1fr}
 .skills-head{margin-top:48px;padding-top:26px}
 .awards{gap:8px 20px}
 .aw{white-space:normal}
 .track{--cw:84vw}
 .ecard figcaption{padding:0 10px}
 .editors{height:150vh}
 .editors .pin{top:8vh;height:84vh}
 .e-hl span{font-size:11px}
 .blk{padding:90px 0}
 .me-sec,.harness-sec,.contact-sec{padding:80px 0}
 .concept-sec{height:auto;padding:80px 0}
 .concept-sticky{position:static;height:auto;display:block;overflow:visible;padding-top:0}
 .concept-head{grid-template-columns:1fr}
 .thflow-sec{height:auto;padding:80px 0}
 .thflow-sticky{position:static;height:auto;display:block;overflow:visible;padding-top:0}
 .thflow-head{grid-template-columns:1fr}
 .steps{flex-wrap:wrap}
 .step{flex:0 0 auto}
 .fcards{grid-template-columns:minmax(0,1fr)}
 .fcard{min-height:0;min-width:0;grid-template-columns:minmax(0,1fr) 104px}
 .fcard .num{white-space:normal}
 .fcard .num em{display:block;margin:4px 0 0}
 .hrows li{grid-template-columns:36px 1fr;gap:6px 12px}
 .hrows span.t{grid-column:2}
 .hrows i{grid-column:2;justify-self:start}
 .band svg{display:none}
 .band-m{display:block}
 .wipe .lab.a{right:16px;bottom:16px}
 .wipe .lab.b{left:16px;bottom:58px}
 .t-head{top:9vh}
 .t-head p{font-size:14px}
 .map{grid-template-columns:1fr;gap:6px}
 .map .ar{display:none}
 .contact-sec{padding:64px 0 28px}
 .ft-top{flex-direction:column;align-items:flex-start;gap:18px}
 .ft-nav{gap:12px 18px}
 .contact-grid{gap:30px;margin-top:40px}
 .ft-card{padding:26px 24px 24px}
 .ft-bottom{flex-direction:column;align-items:flex-start;margin-top:44px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}