/* Open notebook theme. Shared controls and interactive-tool styles stay in style.css. */
@font-face{font-family:CampusNumber;src:url('assets/notebook/campus-number.otf') format('opentype');font-display:swap}
:root{--bg:#fffef9;--bg-side:#f6f4ed;--bg-soft:#f1f3ed;--bg-code:#eef3f0;--line:#d9dfd8;--line-2:#e7e9e1;--t1:#304a59;--t2:#607177;--t3:#81908e;--accent:#337e95;--accent-soft:#e6f0ee;--chu:#4f8d92;--mai:#ad7a92;--fun:#b18370;--more:#748f79;--paper:#fffef9;--paper-left:#f7f5ed;--edge:#cbd2cb;--binding:#b7c4c0;--crease:#6771663b;--fs-h1:32px;--fs-h2:20px;--fs-body:14px;--fs-lead:15px;--rise:7px}
html[data-theme=dark]{--bg:#1b272c;--bg-side:#202d32;--bg-soft:#26363b;--bg-code:#2a3b3f;--line:#3c4b4d;--line-2:#314145;--t1:#e0e6df;--t2:#b2c0bb;--t3:#93a49e;--accent:#9ac5c8;--accent-soft:#2c4244;--chu:#93c0c0;--mai:#cda4b7;--fun:#cba892;--more:#a7bc9d;--paper:#1b282e;--paper-left:#233137;--edge:#43534f;--binding:#728e89;--crease:#0005}
html{background:var(--paper)}
body{background:var(--paper);letter-spacing:.1px}
.layout{position:relative;background:var(--paper);min-height:calc(100vh - 170px)}
.side{background:var(--paper-left);border-right:1px solid var(--edge);padding:26px 20px 28px 18px;box-shadow:inset -14px 0 25px -23px var(--crease)}
.side-brand{gap:8px;margin-bottom:22px}
.side-brand b{font-size:17px;letter-spacing:0}
.side-brand small{font-size:11px}
.side-brand .theme-ic{width:30px;height:30px;background:transparent}
.side-search input{height:38px;border-radius:4px;background:color-mix(in srgb,var(--paper) 75%,transparent);border-color:var(--edge);font-size:12px}
.side-nav{margin-top:22px}
.nav-group{font-size:11px;letter-spacing:1.5px;color:var(--t3);margin-top:20px;margin-bottom:6px}
.side-nav a{min-height:37px;font-size:13px;border-radius:3px;padding:7px 10px;margin:3px 0;gap:8px}
.side-nav a.on{background:var(--accent-soft);color:var(--accent);box-shadow:none}
.side-nav a i{font:12px CampusNumber,var(--mono);background:transparent;color:var(--t3)}
.nav-native{width:17px;height:17px;object-fit:contain;flex:none;opacity:.85}
html[data-theme=dark] :is(.nav-native,.menu-icon,.page-mark,.paper-meta img,.side-note img){filter:brightness(1.6)}
.side-toc{border-top:1px dashed var(--edge);padding-top:16px}
.side-toc a{font-size:12px;min-height:33px;padding-block:6px}
.side-note{display:flex;align-items:center;justify-content:space-between;gap:8px;border-top:1px solid var(--edge);padding-top:16px;margin:26px 0 0;color:var(--t3);font:10px/1.6 CampusNumber,var(--ui);letter-spacing:1px}
.side-note img{width:20px;height:20px;object-fit:contain;opacity:.65}
.notebook-binding{position:fixed;z-index:65;left:calc(var(--side-w) - 12px);width:25px;top:76px;bottom:70px;display:flex;flex-direction:column;justify-content:space-around;pointer-events:none}
.notebook-binding span{display:block;width:26px;height:10px;border:2px solid var(--binding);border-radius:9px;background:linear-gradient(180deg,#ffffffa8,transparent 45%,#314c5524);box-shadow:0 1px 1px #263c4c25,inset 0 1px #ffffffe0;transform:rotate(-7deg)}
.doc{position:relative;isolation:isolate;padding:30px 40px 44px 48px;box-shadow:inset 15px 0 25px -26px var(--crease);min-height:100vh;background:var(--paper)}
.doc::before{content:'';position:absolute;z-index:-1;left:24px;top:0;bottom:0;width:1px;background:color-mix(in srgb,var(--accent) 13%,transparent);pointer-events:none}
.paper-meta{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:0 0 32px;color:var(--t3);font:11px/1.5 CampusNumber,var(--ui);letter-spacing:2px;border-bottom:1px solid var(--line);padding-bottom:13px}
.paper-meta span:last-child{white-space:nowrap;letter-spacing:1px}
.paper-meta img{display:inline-block;width:15px;height:15px;vertical-align:middle;object-fit:contain;margin-right:8px;opacity:.8}
.eyebrow{font-size:11px;color:var(--accent);letter-spacing:2px}
.hero{display:grid;grid-template-columns:minmax(0,1fr) 222px;gap:40px;align-items:center;min-height:330px;padding:7px 18px 38px 12px;margin:0 0 22px;border-bottom:1px solid var(--line);overflow:visible}
.hero::before,.hero::after{display:none}
.hero .h1row{margin-bottom:18px}
.hero h1{font-size:44px;line-height:1.35;font-weight:700;letter-spacing:1px}
.hero h1 small{display:block;font-size:20px;font-weight:500;letter-spacing:1px;color:var(--t2);margin-bottom:5px}
.hero h1 .notebook-title{position:relative;display:inline-block;z-index:0}
.hero h1 .notebook-title::after{content:'';position:absolute;left:0;right:1px;bottom:4px;height:9px;background:color-mix(in srgb,var(--accent) 14%,transparent);z-index:-1;border-radius:40% 15% 30% 20%;transform:rotate(-1deg)}
.hero .lead{max-width:58ch;font-size:14px;line-height:1.95;margin-bottom:20px;color:var(--t2)}
.hero-cta{gap:10px}
.btn{height:38px;padding:0 20px;border-radius:4px;background:var(--accent);color:var(--paper);box-shadow:none;font-weight:600;font-size:12px;letter-spacing:.3px}
.btn.ghost{background:transparent;border-color:var(--edge);color:var(--t2)}
.btn:hover{filter:none;box-shadow:0 2px 0 color-mix(in srgb,var(--accent) 25%,transparent)}
.hero-add{margin-top:12px;font-size:11px;gap:10px}
.hero-add .add{height:34px;font-size:11px;padding-inline:12px}
.hero-add .add-tip{font-size:11px;height:34px}
.hero-keepsake{position:relative;background:var(--paper);border:1px solid var(--line);padding:18px 12px 12px;box-shadow:2px 4px 0 -1px var(--bg-soft),2px 4px 0 var(--line);justify-self:end;width:208px}
.hero-keepsake::before{content:'';position:absolute;top:-9px;left:63px;width:83px;height:21px;background:color-mix(in srgb,var(--accent) 12%,var(--paper));border-left:1px dashed color-mix(in srgb,var(--accent) 23%,transparent);border-right:1px dashed color-mix(in srgb,var(--accent) 23%,transparent);transform:rotate(-4deg);opacity:.9}
.hero .hero-keepsake .blink{width:164px;max-width:164px;aspect-ratio:1;margin:0 auto;height:auto}
.hero .blink::after{display:none}
.hero-keepsake .keepsake-label{max-width:none;text-align:center;font-size:11px;letter-spacing:2px;margin:7px 0 4px;color:var(--t1)}
.hero-keepsake .keepsake-en{text-align:center;font:9px CampusNumber,var(--ui);letter-spacing:1.4px;margin:0;color:var(--t3)}
.doc h2{display:flex;align-items:center;gap:10px;border-top:none;margin:32px 0 17px;padding:0!important;font-size:20px;letter-spacing:.3px}
.doc h2::after{content:'';height:1px;flex:1;background:var(--line);margin-left:10px}
.doc h2.mv::before{display:none}
.chapter-no{font:12px CampusNumber,var(--mono);display:inline-grid;place-items:center;min-width:29px;height:24px;border:1px solid var(--edge);border-radius:3px;color:var(--t3);background:var(--paper-left)}
.section-en{color:var(--t3);font:10px CampusNumber,var(--ui);letter-spacing:1.5px;margin-left:2px;font-weight:400}
.entries{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 36px;margin:0 0 28px;padding:0 10px}
.entry{display:grid;position:relative;grid-template-columns:29px 21px minmax(0,1fr) auto;grid-template-rows:auto auto;gap:3px 11px;align-items:center;min-height:90px;padding:17px 0;border:0;border-bottom:1px solid var(--line);background:none;border-radius:0;box-shadow:none;transition:background-color 180ms ease}
.entry::before,.entry::after{display:none}
.entry-no{grid-column:1;grid-row:1 / 3;align-self:center;background:none;color:var(--t3);font:14px CampusNumber,var(--mono);width:auto;height:auto;border-radius:0;transform:none!important}
.entry .menu-icon{grid-column:2;grid-row:1 / 3;width:20px;height:20px;object-fit:contain;opacity:.9}
.entry b{grid-column:3;grid-row:1;font-size:16px;font-weight:600;line-height:1.7}
.entry-en{grid-column:3;grid-row:2;font:10px CampusNumber,var(--ui);color:var(--t3);letter-spacing:1.1px}
.entry-n{grid-column:4;grid-row:1 / 3;justify-self:end;color:var(--t3);font-size:11px;white-space:nowrap}
.entry:hover{transform:none;background:color-mix(in srgb,var(--accent-soft) 45%,transparent);box-shadow:none;border-color:var(--line)}
.entry:hover .entry-no{background:none;color:var(--accent)}
.entry:hover .entry-n{transform:none;color:var(--accent)}
.entry[data-custom] .entry-n{max-width:55px;white-space:normal;text-align:right;line-height:1.5}
.home-how{padding:4px 10px 0}
.how{padding-left:24px;margin-top:10px}
.how li{padding-left:3px;margin-bottom:12px;line-height:1.9;color:var(--t2)}
.how li::marker{font-family:CampusNumber,var(--mono);color:var(--t3)}
.home-note{display:flex;gap:12px;align-items:flex-start;margin:22px 10px 0;padding:17px 20px;background:var(--paper-left);border:1px solid var(--line);border-radius:3px;max-width:72ch}
.home-note img{width:20px;height:20px;object-fit:contain;flex:none;opacity:.75;margin-top:2px}
.home-note p{margin:0;font-size:12px;line-height:1.9;color:var(--t2)}
.page-heading{position:relative;padding:2px 82px 25px 8px;margin:0 0 26px;border-bottom:1px solid var(--line)}
.page-heading .h1row{margin-bottom:12px}
.page-heading .lead{font-size:14px;line-height:1.95;max-width:70ch;margin:0}
.page-number{position:absolute;right:8px;top:2px;color:color-mix(in srgb,var(--accent) 30%,var(--paper));font:52px/1 CampusNumber,var(--mono);letter-spacing:2px}
.page-heading .page-mark{position:absolute;right:16px;top:62px;width:21px;height:21px;object-fit:contain;opacity:.7}
.manual-section{margin-bottom:25px}
.manual-section .cmds{background:none}
.cmds td{padding-top:15px;padding-bottom:15px;line-height:1.85}
.cmds td:first-child{padding-right:24px}
.cmd{font-size:13px;font-weight:600;line-height:1.85;color:var(--accent)}
.cmds tr:hover{background:color-mix(in srgb,var(--accent-soft) 38%,transparent)}
.ex{color:var(--t3);font-size:12px;border-left-color:var(--line);margin-top:7px}
.bind-first,.callout{background:var(--paper-left);border:1px solid var(--line);border-left:3px solid color-mix(in srgb,var(--accent) 60%,var(--line));border-radius:2px;font-size:13px;line-height:1.9}
.bind-first{margin-bottom:28px}
.shots-hint{font-size:12px!important;color:var(--t3)}
.shots{--shot-max-h:580px;gap:24px}
.shot-row .tile{padding:7px 7px 0;background:var(--paper);border-radius:2px;border-color:var(--edge);box-shadow:1px 3px 0 -1px var(--line)}
.shot-row .tile:hover{transform:none;box-shadow:0 4px 18px #456b6a13}
.shot-row .tile figcaption{padding:7px 5px;background:var(--paper);min-height:36px;height:auto;color:var(--t2);font-size:11px;border-top:none}
.shot-row .tile .chip{background:var(--paper-left);border-color:var(--line);font-size:10px;color:var(--t3);border-radius:3px}
.foot{background:var(--paper-left);border-top:1px solid var(--edge);font-size:11px;padding-top:22px}
.foot-brand{letter-spacing:1px;font-size:12px}
.topbar{background:var(--paper-left);border-bottom-color:var(--edge)}
.theme-ic,.burger,.tsearch{border-color:var(--edge);background:transparent;border-radius:5px;color:var(--t2)}
.theme-ic{border-radius:50%}
.results-in,.lightbox img{border-radius:5px}
.layout-confirm .notebook-binding,.layout-confirm .doc::before{display:none}
.layout-confirm .doc{box-shadow:none}
.layout-confirm .paper-meta{margin-bottom:22px}
.layout-confirm .side{box-shadow:none}
@media(min-width:1800px){.entries{gap:0 56px}.hero{grid-template-columns:minmax(0,1fr) 270px}.hero-keepsake{justify-self:center}}
@media(max-width:1200px){.doc{padding:28px 28px 36px 40px}.doc::before{left:19px}.hero{gap:22px;padding-inline:8px;grid-template-columns:minmax(0,1fr) 194px}.hero-keepsake{width:184px}.hero .hero-keepsake .blink{width:142px;max-width:142px}.hero-keepsake::before{left:50px}.hero h1{font-size:38px}.entries{column-gap:24px}.entry{column-gap:8px}.entry b{font-size:15px}.entry-n{font-size:10px}.section-en{font-size:9px}}
@media(max-width:1000px) and (min-width:861px){.hero{grid-template-columns:minmax(0,1fr);text-align:left;min-height:0;padding-bottom:28px}.hero .h1row,.hero-cta{justify-content:flex-start}.hero-keepsake{display:none}.hero .lead{margin-inline:0}.entries{grid-template-columns:minmax(0,1fr)}.hero-add{justify-content:flex-start}}
@media(max-width:860px){.notebook-binding{display:none}.side{padding-top:25px}.side-note{margin-bottom:15px}.doc{padding:22px 20px 32px 27px;min-height:calc(100vh - 52px)}.doc::before{left:12px}.paper-meta{font-size:9px;letter-spacing:1.3px;margin-bottom:23px;padding-bottom:12px;gap:10px}.paper-meta span:last-child{font-size:9px;letter-spacing:.5px}.paper-meta img{width:12px;height:12px;margin-right:4px}.hero{display:block;text-align:left;padding:0 0 28px;min-height:0}.hero .h1row{justify-content:flex-start;margin-bottom:14px}.hero h1{font-size:37px}.hero h1 small{font-size:17px}.hero .lead{font-size:13px;margin:0 0 18px;line-height:1.95;max-width:none}.hero-keepsake{display:none}.hero-cta{justify-content:flex-start}.hero-add{justify-content:flex-start;gap:8px;margin-top:13px}.hero-add .add{height:38px;padding-inline:10px;font-size:11px}.hero-add .add-tip{font-size:11px}.entries{grid-template-columns:minmax(0,1fr);padding:0;gap:0}.entry{min-height:83px;padding:15px 0;column-gap:10px;grid-template-columns:25px 19px minmax(0,1fr) auto}.entry .menu-icon{width:18px;height:18px}.entry b{font-size:15px}.entry-no{font-size:13px}.entry-en{font-size:9px}.entry-n{font-size:10px}.doc h2{font-size:19px;gap:8px;margin-top:29px}.section-en{font-size:9px;letter-spacing:1px}.chapter-no{height:22px;min-width:26px;font-size:11px}.home-how{padding:0}.how{padding-left:22px}.home-note{margin:22px 0 0;padding:14px 15px;gap:10px}.home-note p{font-size:11px}.home-note img{width:17px;height:17px}.page-heading{padding:0 57px 23px 0;margin-bottom:24px}.page-heading h1{font-size:27px}.page-heading .lead{font-size:13px;line-height:1.95}.page-number{font-size:36px;right:1px}.page-heading .page-mark{width:17px;height:17px;right:8px;top:48px}.manual-section{margin-bottom:20px}.cmds tr{padding:16px 0}.cmds td{padding:0!important}.cmds td:last-child{margin-top:8px;font-size:13px;line-height:1.9}.cmd{font-size:13px}.bind-first,.callout{font-size:12px}.shots{--shot-max-h:62vh}.shot-row .tile{padding:5px 5px 0}.foot{padding-inline:18px}.layout-confirm .doc{padding-left:20px}.layout-confirm .paper-meta{margin-top:7px}}
@media(prefers-reduced-motion:reduce){.entry,.btn{transition:none!important}.hero h1 .notebook-title::after{transform:none}}

/* Second edition: the notebook becomes the composition, rather than a frame. */
:root{--paper:#fcfaf3;--paper-left:#f1f0e6;--bg:#fcfaf3;--bg-side:#f1f0e6;--bg-soft:#edeee5;--bg-code:#e9eee7;--t1:#2e4744;--t2:#60706a;--t3:#7b8980;--accent:#467466;--accent-soft:#e4ebe1;--line:#d4d9cd;--line-2:#e4e6db;--edge:#cbd2c5;--sample-desk:#e7ecdf;--sheet:#fffefa;--ink-soft:#e3e9df}
html[data-theme=dark]{--paper:#1b2828;--paper-left:#223130;--bg:#1b2828;--bg-side:#223130;--bg-soft:#2b3a35;--bg-code:#2d3f38;--t1:#e4e8d9;--t2:#b8c3b6;--t3:#97a698;--accent:#b6ccad;--accent-soft:#334637;--line:#435347;--line-2:#35443a;--edge:#465749;--sample-desk:#293b31;--sheet:#e9e7df;--ink-soft:#33473a}
.doc{padding:28px 42px 50px 48px;background-image:linear-gradient(90deg,#5d604604,transparent 80px)}
.doc-home{padding-top:26px}
.doc::before{background:var(--line-2)}
.paper-meta{margin-bottom:0;font-size:10px;letter-spacing:1.8px;padding-bottom:16px}
.side{background-image:linear-gradient(90deg,transparent 85%,#65644008)}
.side-nav a.on{border-radius:3px 12px 12px 3px;background:var(--accent-soft)}
.side-nav a.on::before{background:var(--accent)}
.notebook-binding span{border-color:var(--binding);background:linear-gradient(#fff9,#c5c9b980 50%,#fff6);box-shadow:0 2px 1px #23362f24,inset 0 1px #ffffffe0}
.hero.notebook-spread{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.93fr);gap:0;padding:0;border-bottom:1px solid var(--line);margin:0 0 54px;min-height:620px;align-items:stretch}
.notebook-spread .hero-text{padding:57px 40px 32px 5px;display:flex;flex-direction:column;align-items:flex-start;min-width:0}
.notebook-spread .hero-text>.eyebrow{font-size:10px;letter-spacing:1.8px;margin-bottom:26px}
.notebook-spread .h1row{margin-bottom:21px}
.notebook-spread h1{font-size:clamp(46px,4.7vw,76px);line-height:1.35;letter-spacing:-2px;font-weight:700}
.notebook-spread h1 .notebook-title{color:var(--accent)}
.notebook-spread h1 .notebook-title::after{bottom:3px;left:0;right:0;height:8px;background:var(--ink-soft);transform:rotate(-2deg)}
.notebook-spread .lead{font-size:14px;line-height:2;margin:0 0 27px;letter-spacing:.3px}
.notebook-spread .hero-cta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin:0}
.notebook-spread .btn{height:42px;padding-inline:18px;border-radius:2px;font-size:12px;gap:20px;display:inline-flex;align-items:center}
.notebook-spread .text-link{font-size:11px;line-height:2;color:var(--t2);text-decoration:none;border-bottom:1px solid var(--line)}
.notebook-spread .hero-add{margin:17px 0 0;gap:8px;max-width:none}
.notebook-spread .hero-add .add{background:none;color:var(--t2);height:34px;padding-inline:10px;line-height:1;font-size:11px}
.notebook-spread .hero-add .add-tip{font-size:10px;height:34px;gap:3px}
.notebook-spread .hero-add .cmd{font-size:11px}
.notebook-spread .hero-keepsake{display:flex;align-items:center;gap:14px;background:none;border:0;border-top:1px dashed var(--edge);border-radius:0;box-shadow:none;transform:none;justify-self:auto;width:100%;margin:31px 0 0;padding:19px 0 0}
.notebook-spread .hero-keepsake::before{display:none}
.notebook-spread .hero-keepsake .blink{width:67px;max-width:67px;margin:0;flex:none;transform:none;animation:none}
.notebook-spread .hero-keepsake .keepsake-label{text-align:left;font-size:11px;letter-spacing:.6px;margin:0 0 7px;font-weight:600}
.notebook-spread .hero-keepsake .keepsake-en{text-align:left;font:10px/1.8 var(--ui);letter-spacing:.4px}
.sample-book{position:relative;min-width:0;background:var(--sample-desk);padding:32px 27px 26px;background-image:radial-gradient(var(--edge) .65px,transparent .65px);background-size:10px 10px}
.notebook-spread>.sample-book{padding:32px 28px 28px 32px;border-left:1px solid var(--line);box-shadow:inset 15px 0 20px -23px #25342690}
.sample-top{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:11px;color:var(--t2);letter-spacing:.6px;margin-bottom:20px}
.sample-stamp{font:10px/1 CampusNumber,var(--mono);color:var(--t3);letter-spacing:1.8px}
.sample-tabs{display:flex;gap:5px;max-width:100%;position:relative;z-index:2;overflow:auto;scrollbar-width:thin;margin:0 13px -1px}
.sample-tabs button{border:1px solid var(--edge);background:var(--bg-soft);color:var(--t2);font:11px/1.4 var(--ui);padding:10px 18px 9px;min-height:36px;border-radius:5px 5px 0 0;white-space:nowrap;cursor:pointer;flex:1}
.sample-tabs button[aria-selected=true]{color:var(--accent);background:var(--paper);border-bottom-color:var(--paper);font-weight:700}
.sample-panel{position:relative;background:var(--paper);padding:13px 13px 0;border:1px solid var(--edge);box-shadow:3px 4px 0 -1px var(--sample-desk),3px 4px 0 var(--edge)}
.sample-panel[hidden]{display:none}
.sample-open.tile{display:block;position:relative;width:100%;height:330px;padding:0;overflow:hidden;border:1px solid var(--line-2);border-radius:1px;background:var(--sheet);box-shadow:none;transform:none;transition:filter .2s ease}
.sample-open.tile img{display:block;width:100%;height:auto;min-height:100%;object-fit:cover;object-position:top;max-width:none;margin:0}
.sample-open.tile::after{content:'';position:absolute;bottom:0;left:0;right:0;height:70px;background:linear-gradient(transparent,#fffdf7e8);pointer-events:none}
.sample-open.tile:hover{transform:none;box-shadow:none;filter:brightness(.98);border-color:var(--edge)}
.sample-expand{position:absolute;bottom:10px;left:0;right:0;text-align:center;z-index:1;font:10px/1.6 var(--ui);color:#415b58;letter-spacing:1px;pointer-events:none}
.sample-caption{padding:16px 3px 15px;min-height:95px}
.sample-copy-label{display:inline-block;color:var(--t3);font-size:10px;margin-right:10px}
.sample-caption .cmd{font-size:12px}
.sample-caption p{font-size:11px;line-height:1.9;color:var(--t2);margin:7px 0 0;max-width:none}
.sample-tabs button:focus-visible,.sample-open:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.section-intro{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:27px;scroll-margin-top:80px}
.section-intro .eyebrow,.home-how .eyebrow{font-size:9px;letter-spacing:2px;margin-bottom:10px}
.doc .section-intro h2,.doc .extra-heading h2,.doc .home-how h2{margin:0;font-size:26px;letter-spacing:-.4px;display:block}
.section-intro h2::after,.extra-heading h2::after,.home-how h2::after{display:none}
.section-intro>p{font-size:11px;color:var(--t3);margin:0 0 2px}
.chapter-routes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-bottom:50px;border-top:1px solid var(--t1);border-bottom:1px solid var(--line)}
.chapter-route{position:relative;min-width:0;padding:24px 26px 23px 0}
.chapter-route+.chapter-route{border-left:1px solid var(--line);padding-left:25px}
.chapter-route:last-child{padding-right:0}
.route-meta{display:flex;align-items:center;gap:8px;color:var(--t3);font:9px CampusNumber,var(--mono);letter-spacing:1px}
.route-meta>span:first-child{font-size:16px;margin-right:auto;color:var(--t2)}
.route-meta .menu-icon{width:18px;height:18px;object-fit:contain;opacity:.75}
.route-link{display:block;position:relative;text-decoration:none;padding:19px 0 20px;color:var(--t1)}
.route-link h3{font-size:20px;line-height:1.55;letter-spacing:-.5px;margin:0 0 12px;font-weight:600;padding-right:17px}
.route-link p{font-size:12px;line-height:1.95;margin:0;color:var(--t2);min-height:47px;max-width:30ch}
.route-arrow{position:absolute;right:0;top:21px;font-size:21px;font-weight:400;color:var(--accent);transition:transform .2s}
.route-link:hover .route-arrow{transform:translate(2px,-2px)}
.route-bottom{display:flex;justify-content:space-between;gap:8px;font-size:10px;color:var(--t3);padding-bottom:13px;border-bottom:1px dashed var(--line)}
.route-bottom span:first-child{color:var(--t2)}
.route-commands{display:flex;flex-wrap:wrap;gap:7px;margin-top:13px}
.route-commands .cmd{background:var(--bg-code);font-size:10px;font-weight:500;padding:4px 7px;border-radius:2px;min-height:28px}
.extra-leaf{display:grid;grid-template-columns:.8fr 2fr;gap:34px;padding:28px 27px;margin:0 0 45px;background:var(--paper-left);border:1px solid var(--line);box-shadow:2px 3px 0 -1px var(--paper),2px 3px 0 var(--line)}
.extra-heading{padding-top:10px;min-width:0}
.extra-heading .eyebrow{font-size:9px}
.doc .extra-heading h2{font-size:19px;margin-top:10px;line-height:1.7}
.extra-heading p{font-size:11px;line-height:1.9;color:var(--t3);margin-top:10px}
.extra-leaf .entries{padding:0;margin:0;gap:0 22px}
.extra-leaf .entry{grid-template-columns:22px minmax(0,1fr) auto;gap:2px 7px;min-height:85px;padding:15px 0;align-content:center}
.extra-leaf .entry-no{font-size:11px;grid-column:1;grid-row:1/3}
.extra-leaf .menu-icon{display:none}
.extra-leaf .entry b{grid-column:2;font-size:13px;line-height:1.6}
.extra-leaf .entry-en{grid-column:2;font-size:8px;letter-spacing:.4px}
.extra-leaf .entry-n{grid-column:3;font-size:9px;max-width:43px;white-space:normal}
.extra-leaf .entry:nth-last-child(-n+2){border-bottom:0}
.home-how{display:grid;grid-template-columns:1fr 2fr;gap:35px;padding:0;margin-bottom:25px}
.home-how>div>p:last-child{font-size:11px;color:var(--t3);line-height:1.9;margin-top:13px}
.home-how .how{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;counter-reset:notes;margin:0;padding:0;list-style:none}
.home-how .how li{counter-increment:notes;padding:0;font-size:11px;min-width:0;line-height:1.85;margin:0}
.home-how .how li::before{content:'0' counter(notes);display:block;font:18px CampusNumber,var(--mono);color:var(--t3);margin-bottom:15px}
.home-how .how b{display:block;color:var(--t1);font-weight:600;font-size:12px;margin-bottom:7px}
.home-how .how span{display:block;color:var(--t2)}
.home-how .how .cmd{font-size:11px}
.home-note{max-width:none;border:0;border-top:1px solid var(--line);border-radius:0;background:none;margin:32px 0 0;padding:20px 0 0}
.home-note p{max-width:none;font-size:10px}
.home-note img{width:16px;height:16px}
.chapter-opening{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:35px;margin:0 0 36px;padding:32px 0;border-bottom:1px solid var(--line);align-items:center}
.chapter-opening .page-heading{border:0;margin:0;padding:35px 10px 35px 2px;min-width:0}
.chapter-opening .page-number{position:static;display:block;font-size:67px;color:var(--t3);opacity:.4;letter-spacing:-1px;margin-bottom:27px}
.chapter-opening .page-mark{top:42px;right:10px;width:22px;height:22px}
.chapter-opening .eyebrow{font-size:10px;letter-spacing:2px;margin-bottom:12px}
.chapter-opening h1{font-size:43px;letter-spacing:-1px;line-height:1.5}
.chapter-opening .lead{font-size:13px;line-height:2;max-width:43ch}
.chapter-jump{display:flex;gap:30px;justify-content:space-between;align-items:center;color:var(--accent);font-size:12px;text-decoration:none;margin-top:32px;padding:13px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);max-width:300px}
.chapter-opening .sample-book{padding:21px}
.chapter-opening .sample-top{margin-bottom:13px}
.chapter-opening .sample-open{height:265px}
.chapter-opening .sample-tabs button{padding-inline:12px}
.chapter-opening .sample-caption{min-height:94px}
.manual-start{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--t1);padding-bottom:14px;gap:10px;font-size:15px;font-weight:600;scroll-margin-top:90px;margin:0 0 25px}
.manual-start span:last-child{font-size:10px;font-weight:400;color:var(--t3)}
.doc-manual .bind-first{max-width:none;margin:0 0 26px;background:none;border:0;border-bottom:1px dashed var(--line);padding:0 0 21px;font-size:12px}
.doc-manual .manual-section{display:grid;grid-template-columns:145px minmax(0,1fr);gap:28px;margin:0 0 22px;padding:4px 0 24px;border-bottom:1px solid var(--line)}
.doc-manual .manual-section h2{display:block;margin:0!important;font-size:17px;line-height:1.65;scroll-margin-top:90px}
.doc-manual .manual-section h2::after{display:none}
.doc-manual .manual-section .chapter-no{display:block;text-align:left;font:31px/1 CampusNumber,var(--mono);color:var(--t3);opacity:.65;background:none;border:0;padding:0;margin:0 0 14px;height:auto}
.doc-manual .cmds{table-layout:fixed}
.doc-manual .cmds td{padding-top:12px;padding-bottom:14px;font-size:12px;line-height:1.9}
.doc-manual .cmds td:first-child{width:42%;padding-right:22px;white-space:normal}
.doc-manual .cmd{font-size:12px}
.doc-manual .ex{font-size:11px;margin-top:8px;padding-left:10px}
.doc-manual .cmds tr:first-child td{padding-top:0}
.doc-manual .cmds tr:last-child td{padding-bottom:0}
.doc-manual #shots{margin-top:39px;font-size:24px}
.foot{background:var(--paper-left)}
@media(min-width:1800px){.doc{padding-inline:58px}.notebook-spread .hero-text{padding-left:20px;padding-block:65px}.notebook-spread h1{font-size:82px}.notebook-spread>.sample-book{padding:40px 48px}.notebook-spread .sample-open{height:390px}.hero.notebook-spread{min-height:670px}.chapter-route{padding-block:32px}.chapter-opening .sample-open{height:320px}.chapter-opening{grid-template-columns:1.2fr 1fr;gap:65px}.doc-manual .manual-section{grid-template-columns:210px minmax(0,1fr);gap:40px}.doc-manual .cmds td:first-child{width:35%}.doc-manual .cmds td{font-size:13px}.doc-manual .cmd{font-size:13px}.doc-manual .cmds{max-width:1400px}.extra-leaf{grid-template-columns:1fr 2fr}.extra-leaf .entry{min-height:90px}}
@media(max-width:1250px){.doc{padding-inline:33px 27px}.notebook-spread .hero-text{padding:38px 22px 25px 0}.notebook-spread h1{font-size:48px}.notebook-spread .hero-cta{gap:9px}.notebook-spread .hero-add{gap:5px}.notebook-spread>.sample-book{padding:25px 18px}.sample-open.tile{height:300px}.notebook-spread .text-link{font-size:10px}.extra-leaf{grid-template-columns:1fr;gap:15px;padding:23px}.extra-heading{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 15px;padding:0}.doc .extra-heading h2{margin:0}.extra-heading>p{margin:0}.chapter-route{padding-right:17px}.chapter-route+.chapter-route{padding-left:17px}.route-link h3{font-size:17px}.route-link p{font-size:11px}.home-how{grid-template-columns:1fr;gap:20px}.home-how>div>p:last-child{margin:8px 0}.doc-manual .manual-section{grid-template-columns:115px minmax(0,1fr);gap:22px}.chapter-opening{gap:20px}.chapter-opening h1{font-size:35px}.chapter-opening .sample-book{padding:16px}.chapter-opening .sample-open{height:230px}.sample-tabs button{padding-inline:12px}}
@media(max-width:1100px) and (min-width:861px){.hero.notebook-spread{grid-template-columns:minmax(0,1fr);min-height:0}.notebook-spread .hero-text{padding:38px 7px 28px;display:grid;grid-template-columns:1fr;align-items:start}.notebook-spread h1{font-size:58px}.notebook-spread>.sample-book{border-left:0;border-top:1px solid var(--line);padding:25px 33px}.notebook-spread .hero-keepsake{display:none}.notebook-spread .sample-open{height:320px}.chapter-routes{grid-template-columns:1fr}.chapter-route,.chapter-route+.chapter-route{padding:22px 0;border-left:0;border-bottom:1px solid var(--line)}.chapter-route:last-child{border-bottom:0}.route-link{padding:14px 0}.route-link p{min-height:0;max-width:none}.route-meta{justify-content:flex-start}.route-meta>span:first-child{margin-right:12px}.route-link h3{font-size:23px}.route-bottom{margin-top:0}.route-commands{margin-top:12px}.chapter-opening{grid-template-columns:1fr}.chapter-opening .page-heading{padding:0 0 10px}.chapter-opening .page-number{font-size:45px;margin-bottom:15px}.chapter-opening .page-mark{top:10px;right:10px}.chapter-opening .sample-open{height:300px}.chapter-opening .sample-book{padding:24px}.doc-manual .manual-section{grid-template-columns:1fr;gap:20px}.doc-manual .manual-section h2{display:flex;gap:12px}.doc-manual .manual-section .chapter-no{font-size:21px;margin:0}}
@media(max-width:860px){.doc{padding:22px 20px 35px 26px}.paper-meta{font-size:9px;padding-bottom:13px}.hero.notebook-spread{display:grid;grid-template-columns:1fr;min-height:0;margin-bottom:35px}.notebook-spread .hero-text{padding:32px 0 28px;display:flex}.notebook-spread .hero-text>.eyebrow{font-size:9px;letter-spacing:1.1px;margin-bottom:20px}.notebook-spread h1{font-size:clamp(44px,7.3vw,58px);letter-spacing:-1px;line-height:1.32}.notebook-spread .h1row{margin-bottom:17px}.notebook-spread .lead{font-size:12px;line-height:1.95;margin-bottom:21px}.notebook-spread .hero-cta{gap:9px 13px}.notebook-spread .btn{font-size:11px;padding-inline:14px;height:40px}.notebook-spread .text-link{font-size:10px}.notebook-spread .hero-add{margin-top:14px;gap:7px}.notebook-spread .hero-add .add{height:36px;font-size:10px;padding-inline:9px}.notebook-spread .hero-add .add-tip{height:36px;font-size:10px;gap:3px}.notebook-spread .hero-add .cmd{font-size:11px}.notebook-spread .hero-keepsake{display:none}.notebook-spread>.sample-book{border-left:0;border-top:1px solid var(--line);padding:20px 18px 24px;box-shadow:none}.sample-top{font-size:10px;margin-bottom:15px}.sample-stamp{font-size:9px}.sample-open.tile{height:290px}.sample-tabs{margin-inline:9px;gap:4px}.sample-tabs button{font-size:11px;min-height:37px;padding:9px 13px}.sample-panel{padding:9px 9px 0}.sample-caption{padding:13px 1px;min-height:93px}.sample-caption .cmd{font-size:12px}.sample-caption p{font-size:10px;line-height:1.9}.sample-copy-label{font-size:9px;margin-right:6px}.section-intro{display:block;margin-bottom:21px}.doc .section-intro h2{font-size:24px}.section-intro>p{font-size:10px;margin-top:10px}.chapter-routes{grid-template-columns:1fr;margin-bottom:30px}.chapter-route,.chapter-route+.chapter-route{padding:22px 0;border-left:0;border-bottom:1px solid var(--line)}.chapter-route:last-child{border-bottom:0}.route-meta{font-size:9px;gap:9px}.route-meta>span:first-child{font-size:16px;margin-right:13px}.route-meta .menu-icon{width:17px;height:17px}.route-link{padding:14px 24px 15px 0}.route-link h3{font-size:23px;letter-spacing:-.3px;line-height:1.6;margin-bottom:8px}.route-arrow{top:18px}.route-link p{font-size:12px;line-height:1.9;min-height:0;max-width:none}.route-bottom{font-size:10px;padding-bottom:12px}.route-commands{gap:8px;margin-top:13px}.route-commands .cmd{font-size:11px;min-height:32px;line-height:1.7;padding:6px 9px}.extra-leaf{margin-bottom:33px;padding:21px 17px;gap:15px}.extra-heading{display:block}.extra-heading .eyebrow{font-size:9px}.doc .extra-heading h2{font-size:19px;margin-top:9px}.extra-heading>p{font-size:10px;margin-top:8px}.extra-leaf .entries{grid-template-columns:1fr;gap:0}.extra-leaf .entry{min-height:77px;grid-template-columns:23px minmax(0,1fr) auto;column-gap:7px}.extra-leaf .entry b{font-size:13px}.extra-leaf .entry-en{font-size:8px}.extra-leaf .entry-n{font-size:9px;max-width:52px}.extra-leaf .entry:nth-last-child(-n+2){border-bottom:1px solid var(--line)}.extra-leaf .entry:last-child{border-bottom:0;padding-bottom:0}.home-how{display:block}.doc .home-how h2{font-size:25px}.home-how>div>p:last-child{font-size:10px;margin:10px 0 21px}.home-how .how{grid-template-columns:1fr;gap:17px}.home-how .how li{display:grid;grid-template-columns:27px minmax(0,1fr);column-gap:13px;row-gap:4px;padding-bottom:16px;border-bottom:1px dashed var(--line);margin:0}.home-how .how li::before{grid-row:1/3;grid-column:1;font-size:16px;margin-top:3px;margin-bottom:0}.home-how .how li b{grid-column:2;font-size:12px;margin:0}.home-how .how li>span{grid-column:2;font-size:11px;line-height:1.9}.home-how .how li:last-child{border-bottom:0;padding-bottom:0}.home-note{margin-top:25px;gap:9px;padding-top:18px}.home-note p{font-size:10px;line-height:1.9}.home-note img{width:15px;height:15px}.chapter-opening{display:block;padding:25px 0 27px;margin-bottom:26px}.chapter-opening .page-heading{padding:0;margin-bottom:26px}.chapter-opening .page-number{font-size:43px;margin-bottom:16px}.chapter-opening .page-mark{top:10px;right:8px;width:19px;height:19px}.chapter-opening h1{font-size:34px;letter-spacing:-1px}.chapter-opening .eyebrow{font-size:9px;letter-spacing:1.5px}.chapter-opening .lead{font-size:12px;max-width:none;line-height:2}.chapter-jump{max-width:none;margin-top:22px;font-size:11px;padding-block:12px}.chapter-opening .sample-book{padding:18px 15px 22px}.chapter-opening .sample-open{height:260px}.chapter-opening .sample-caption{min-height:93px}.manual-start{font-size:14px;gap:8px;padding-bottom:13px;margin-bottom:22px}.manual-start span:last-child{font-size:9px;text-align:right}.doc-manual .bind-first{font-size:11px;line-height:2;margin-bottom:25px}.doc-manual .manual-section{display:block;margin-bottom:22px;padding-bottom:23px}.doc-manual .manual-section h2{display:flex;align-items:baseline;gap:11px;font-size:18px;margin-bottom:19px!important}.doc-manual .manual-section .chapter-no{font-size:21px;margin:0;min-width:25px}.doc-manual .cmds,.doc-manual .cmds tbody,.doc-manual .cmds tr,.doc-manual .cmds td{display:block;width:auto}.doc-manual .cmds tr{padding:16px 0}.doc-manual .cmds tr:first-child{padding-top:0}.doc-manual .cmds tr:last-child{padding-bottom:0}.doc-manual .cmds td{font-size:12px;padding:0!important}.doc-manual .cmds td:first-child{padding:0!important;width:auto}.doc-manual .cmds td:last-child{margin-top:8px}.doc-manual .cmd{font-size:12px}.doc-manual .ex{font-size:11px;margin-top:7px}.doc-manual #shots{font-size:23px}.layout-confirm .doc{padding-left:20px}}
@media(prefers-reduced-motion:reduce){.route-arrow,.sample-open.tile{transition:none!important}.notebook-spread .hero-keepsake .blink{animation:none!important}}

/* Icons stay small; the reading text should not shrink with them. */
.notebook-spread .lead{font-size:15px}
.sample-tabs button{min-height:40px}
.sample-caption p{font-size:12px}
.route-link p{font-size:13px}
.route-bottom{font-size:11px}
.route-commands .cmd{font-size:11px}
.extra-leaf .entry b{font-size:14px}
.extra-heading p,.home-how>div>p:last-child{font-size:12px}
.home-how .how b{font-size:13px}
.home-how .how span{font-size:12px}
.home-note p{font-size:11px}
.chapter-opening .lead{font-size:14px}
.doc-manual .cmds td,.doc-manual .cmd{font-size:13px}
.doc-manual .ex{font-size:12px}
@media(max-width:1250px){.notebook-spread .lead{font-size:14px}.chapter-opening .lead{font-size:13px}}
@media(max-width:860px){.notebook-spread .lead{font-size:13px}.sample-caption p{font-size:11px}.route-link p{font-size:13px}.route-commands .cmd{min-height:36px;padding:7px 9px}.extra-leaf .entry b{font-size:14px}.home-how .how li>span{font-size:12px}.home-how .how li b{font-size:13px}.home-note p{font-size:11px}.doc-manual .cmds td,.doc-manual .cmd{font-size:13px}.doc-manual .ex{font-size:12px}.chapter-opening .lead{font-size:13px}}
@media(max-width:375px){.sample-tabs{margin-inline:5px}.sample-tabs button{padding-inline:7px;font-size:10px}.notebook-spread .hero-add{gap:5px}.notebook-spread .hero-add .add{font-size:10px;padding-inline:7px}.notebook-spread .hero-add .add-tip{font-size:9px}.notebook-spread .hero-add .cmd{font-size:10px}}

/* Paper motion: short, quiet movement with a stable reading surface. */
:root{--t-fast:120ms;--t-base:180ms;--t-slow:260ms;--e-spring:cubic-bezier(.22,.68,.32,1)}
.side{scrollbar-width:thin;scrollbar-color:transparent transparent;scrollbar-gutter:stable;overscroll-behavior:contain}
.side:hover,.side:focus-within{scrollbar-color:color-mix(in srgb,var(--t2) 30%,transparent) transparent}
.side::-webkit-scrollbar{width:4px;height:4px;background:transparent}
.side::-webkit-scrollbar-track,.side::-webkit-scrollbar-corner{background:transparent}
.side::-webkit-scrollbar-thumb{border-radius:8px;background:transparent}
.side:hover::-webkit-scrollbar-thumb,.side:focus-within::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--t2) 30%,transparent)}
.side::-webkit-scrollbar-button{display:none;width:0;height:0}
.side-brand .blink .face-open,.hero .blink .face-shut{animation:none}
.mv-orb::before,.mv-orb::after{display:none}
.mv-float{animation:none}
.hero-text h1{overflow:visible}
.sample-panel{transform-origin:left center}
.sample-tabs button{position:relative;transition:color 140ms ease,background-color 140ms ease,border-color 140ms ease}
.sample-tabs button::after{content:'';position:absolute;left:14px;right:14px;bottom:5px;height:1px;background:var(--accent);opacity:.55;transform:scaleX(0);transform-origin:left center;transition:transform 180ms var(--e-out)}
.sample-tabs button[aria-selected=true]::after{transform:scaleX(1)}
.sample-tabs button:hover{color:var(--accent);background:var(--paper)}
.sample-tabs button:active{background:var(--accent-soft)}
.sample-caption,.chapter-opening .sample-caption{min-height:108px}
.btn,.notebook-spread .btn{transition:background-color 140ms ease,border-color 140ms ease,box-shadow 180ms ease,transform 180ms var(--e-out)}
.btn::after,.btn.ghost::after,.tile .shot::after{display:none}
.btn:hover{transform:translateY(-1px);box-shadow:0 2px 0 color-mix(in srgb,var(--t1) 16%,transparent)}
.btn:active{transform:translateY(0);box-shadow:none}
.btn.ghost:hover{background:var(--accent-soft)}
.cmd{transition:color 120ms ease,background-color 120ms ease,box-shadow 140ms ease}
.cmd:hover{box-shadow:none;text-decoration-color:color-mix(in srgb,var(--accent) 45%,transparent)}
.cmd:active{background-color:var(--accent-soft)}
.cmd.copied{animation:note-mark 420ms ease-out}
.entry:hover,.shot-row>.tile:hover{transform:none}
.entry b,.route-link h3{transition:color 140ms ease}
.entry:hover b,.route-link:hover h3{color:var(--accent)}
.tile .shot::before{transition:opacity 160ms ease;transform:translate(-50%,-50%);border-radius:4px;background:#253b35d9;backdrop-filter:none}
.tile:hover .shot::before{transform:translate(-50%,-50%)}
.sample-open.tile{transition:filter 160ms ease,border-color 160ms ease}
.sample-open.tile:active{filter:brightness(.96)}
.results-in{animation:note-lift 220ms var(--e-out) both;transform-origin:top center}
.r-item{transition:background-color 120ms ease,color 120ms ease}
.r-item:hover{transform:none}
.lightbox{background:#15221eea;animation:note-scrim 170ms ease-out both}
.lightbox img{animation:note-lift 260ms var(--e-out) both;box-shadow:0 5px 20px #0003}
.lb-close{transition:background-color 140ms ease,transform 140ms ease}
.lb-close:hover{transform:none}
.lb-close:active{transform:translateY(1px)}
.toast{background:var(--paper);color:var(--t1);border:1px solid var(--edge);border-radius:3px;box-shadow:2px 3px 0 -1px var(--bg-soft),2px 3px 0 var(--line);animation:note-toast 180ms var(--e-out) both;font-weight:500}
.progress{background:var(--accent)}
@keyframes note-mark{from{background-color:var(--accent-soft);box-shadow:inset 0 -2px 0 var(--accent)}to{background-color:transparent;box-shadow:inset 0 0 0 transparent}}
@keyframes note-scrim{from{opacity:0}to{opacity:1}}
@keyframes note-lift{from{opacity:.35;transform:translateY(6px)}to{opacity:1;transform:none}}
@keyframes note-toast{from{opacity:0;transform:translate(-50%,5px)}to{opacity:1;transform:translate(-50%,0)}}

/* Native document transitions keep the index still as the content changes. */
@view-transition{navigation:auto}
.side{view-transition-name:notebook-index}
.doc{view-transition-name:notebook-page}
::view-transition-group(root),::view-transition-group(notebook-index){animation:none}
::view-transition-old(root),::view-transition-new(root),::view-transition-old(notebook-index),::view-transition-new(notebook-index){animation:none;mix-blend-mode:normal}
::view-transition-old(notebook-index){display:none}
::view-transition-group(notebook-page){animation-duration:240ms;animation-timing-function:var(--e-out)}
::view-transition-old(notebook-page){animation:note-page-out 130ms ease-out both;mix-blend-mode:normal}
::view-transition-new(notebook-page){animation:note-page-in 260ms var(--e-out) both;mix-blend-mode:normal}
@keyframes note-page-out{to{opacity:0;transform:translateX(-4px)}}
@keyframes note-page-in{from{opacity:.2;transform:translateX(8px)}to{opacity:1;transform:none}}
@media(hover:none){.side{scrollbar-color:color-mix(in srgb,var(--t2) 22%,transparent) transparent}}
@media(max-width:860px){.side{transition:transform 240ms var(--e-out),visibility 0s 240ms}.side.open{transition:transform 240ms var(--e-out),visibility 0s 0s}}
@media(prefers-reduced-motion:reduce){
  @view-transition{navigation:none}
  .side,.side.open,.sample-tabs button,.sample-tabs button::after,.btn,.cmd,.entry,.tile,.results-in,.lightbox,.lightbox img,.toast,.route-arrow{animation:none!important;transition:none!important}
  .btn:hover,.btn:active,.lb-close:active,.route-link:hover .route-arrow{transform:none}
  ::view-transition-old(notebook-page),::view-transition-new(notebook-page){animation:none}
}

/* Mobile webviews: stable page shell, comfortable touch targets and no snapshot overlay. */
.is-navigating .progress{transform:scaleX(.6)!important;opacity:.7}
.route-enter{animation:route-enter 180ms ease-out both}
@keyframes route-enter{from{opacity:.5;transform:translateY(4px)}to{opacity:1;transform:none}}
.qq-webview .side,.qq-webview .doc{view-transition-name:none}
@media(max-width:860px){
  @view-transition{navigation:none}
  .side,.doc{view-transition-name:none}
  html.drawer-open,html.drawer-open body{overflow:hidden}
  .side{height:100vh;height:100dvh;width:280px;width:min(320px,calc(100vw - 48px));padding-top:max(24px,env(safe-area-inset-top));padding-bottom:max(28px,env(safe-area-inset-bottom));-webkit-overflow-scrolling:touch;touch-action:pan-y}
  .side-nav a,.side-toc a{min-height:44px;padding-block:10px}
  .side-search input{height:44px;font-size:16px}
  .topbar{padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right));background:var(--paper-left)}
  .topbar-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .topbar .burger,.topbar .theme-ic,.topbar .tsearch{min-width:44px;min-height:44px}
  .scrim{touch-action:none;-webkit-tap-highlight-color:transparent}
  .side a,.topbar button,.sample-tabs button,.cmd{touch-action:manipulation}
  .sample-tabs button{min-height:44px}
  .doc{padding-bottom:max(35px,env(safe-area-inset-bottom))}
}
@media(prefers-reduced-motion:reduce){.route-enter{animation:none!important}}