diff --git a/fabula-ultima-sheet.js b/fabula-ultima-sheet.js
index e5cdaa3..10b3f21 100644
--- a/fabula-ultima-sheet.js
+++ b/fabula-ultima-sheet.js
@@ -248,35 +248,54 @@ function addSpell() { spells.push({}); renderSpells(); }
 function removeSpell(i) { spells.splice(i, 1); renderSpells(); }
 
 // ── SAVE / LOAD ────────────────────────────────────
+// Short key legend (serialized form only; in-memory objects use full names):
+//   n=name, pn=pronouns, id=identity, th=theme, og=origin, tr=traits
+//   lv=level, xp=xp, z=zenit
+//   im=initMod, df=defense, md=magDef
+//   dxb=dexBase, dxc=dexCur, inb=insBase, inc=insCur
+//   mgb=migBase, mgc=migCur, wpb=wlpBase, wpc=wlpCur
+//   hx=hpMax, hc=hpCur, mx=mpMax, mc=mpCur, ix=ipMax, ic=ipCur
+//   fp=fp, bp=backpack
+//   acn=accName, acd=accDesc, amn=armName, amd=armDesc
+//   mhn=mhName, mhd=mhDesc, ohn=ohName, ohd=ohDesc
+//   hs=heroicSkills, rn=ritualsNotes
+//   sa=statusesActive, ma=martialChecked, da=disciplinesChecked
+//   bo=bonds, pc=primaryClasses, oc=otherClasses, sp=spells
+// Nested bonds:        n=name, f=feelings
+// Nested classes:      n=name, b=benefits, s=skills
+// Nested spells:       n=name, nt=notes, mp=mp, tg=targets, dr=duration
 function collectData() {
   const get = id => { const el = document.getElementById(id); return el ? el.value : ''; };
-  const statusesActive = [...document.querySelectorAll('.status-item.active-status')].map(el => el.dataset.status);
-  const martialChecked = [...document.querySelectorAll('.martial-item.checked')].map(el => el.querySelector('span').textContent);
-  const disciplinesChecked = [...document.querySelectorAll('.disc-item.checked')].map(el => el.querySelector('span').textContent);
+  const sa = [...document.querySelectorAll('.status-item.active-status')].map(el => el.dataset.status);
+  const ma = [...document.querySelectorAll('.martial-item.checked')].map(el => el.querySelector('span').textContent);
+  const da = [...document.querySelectorAll('.disc-item.checked')].map(el => el.querySelector('span').textContent);
 
   return {
-    name: get('charName'), pronouns: get('charPronouns'),
-    identity: get('charIdentity'), theme: get('charTheme'), origin: get('charOrigin'),
-    traits: get('charTraits'),
-    level, xp: get('xpCurrent'), zenit: get('zenit'),
-    initMod: get('initMod'), defense: get('defense'), magDef: get('magDef'),
-    dexBase: get('dex-base'), dexCur: get('dex-cur'),
-    insBase: get('ins-base'), insCur: get('ins-cur'),
-    migBase: get('mig-base'), migCur: get('mig-cur'),
-    wlpBase: get('wlp-base'), wlpCur: get('wlp-cur'),
-    hpMax: get('hpMax'), hpCur: get('hpCur'),
-    mpMax: get('mpMax'), mpCur: get('mpCur'),
-    ipMax: get('ipMax'), ipCur: get('ipCur'),
+    n: get('charName'), pn: get('charPronouns'),
+    id: get('charIdentity'), th: get('charTheme'), og: get('charOrigin'),
+    tr: get('charTraits'),
+    lv: level, xp: get('xpCurrent'), z: get('zenit'),
+    im: get('initMod'), df: get('defense'), md: get('magDef'),
+    dxb: get('dex-base'), dxc: get('dex-cur'),
+    inb: get('ins-base'), inc: get('ins-cur'),
+    mgb: get('mig-base'), mgc: get('mig-cur'),
+    wpb: get('wlp-base'), wpc: get('wlp-cur'),
+    hx: get('hpMax'), hc: get('hpCur'),
+    mx: get('mpMax'), mc: get('mpCur'),
+    ix: get('ipMax'), ic: get('ipCur'),
     fp: get('fpCount'),
-    backpack: get('backpack'),
-    accName: get('acc-name'), accDesc: get('acc-desc'),
-    armName: get('arm-name'), armDesc: get('arm-desc'),
-    mhName: get('mh-name'), mhDesc: get('mh-desc'),
-    ohName: get('oh-name'), ohDesc: get('oh-desc'),
-    heroicSkills: get('heroicSkills'),
-    ritualsNotes: get('ritualsNotes'),
-    statusesActive, martialChecked, disciplinesChecked,
-    bonds, primaryClasses, otherClasses, spells
+    bp: get('backpack'),
+    acn: get('acc-name'), acd: get('acc-desc'),
+    amn: get('arm-name'), amd: get('arm-desc'),
+    mhn: get('mh-name'), mhd: get('mh-desc'),
+    ohn: get('oh-name'), ohd: get('oh-desc'),
+    hs: get('heroicSkills'),
+    rn: get('ritualsNotes'),
+    sa, ma, da,
+    bo: bonds.map(b => ({ n: b.name, f: b.feelings })),
+    pc: primaryClasses.map(c => ({ n: c.name, b: c.benefits, s: c.skills })),
+    oc: otherClasses.map(c => ({ n: c.name, b: c.benefits, s: c.skills })),
+    sp: spells.map(s => ({ n: s.name, nt: s.notes, mp: s.mp, tg: s.targets, dr: s.duration })),
   };
 }
 
@@ -302,54 +321,74 @@ function loadSheet() {
 
 function applyData(d) {
   const set = (id, val) => { const el = document.getElementById(id); if (el && val !== undefined) el.value = val; };
-  set('charName', d.name); set('charPronouns', d.pronouns);
-  set('charIdentity', d.identity); set('charTheme', d.theme); set('charOrigin', d.origin);
-  set('charTraits', d.traits);
-  level = d.level || 1;
+  set('charName',    d.n   ?? d.name);       set('charPronouns', d.pn ?? d.pronouns);
+  set('charIdentity',d.id  ?? d.identity);   set('charTheme',    d.th ?? d.theme);
+  set('charOrigin',  d.og  ?? d.origin);     set('charTraits',   d.tr ?? d.traits);
+  level = d.lv ?? d.level ?? 1;
   document.getElementById('levelDisplay').textContent = level;
-  set('xpCurrent', d.xp); set('zenit', d.zenit);
-  set('initMod', d.initMod); set('defense', d.defense); set('magDef', d.magDef);
-  set('dex-base', d.dexBase); set('dex-cur', d.dexCur);
-  set('ins-base', d.insBase); set('ins-cur', d.insCur);
-  set('mig-base', d.migBase); set('mig-cur', d.migCur);
-  set('wlp-base', d.wlpBase); set('wlp-cur', d.wlpCur);
-  set('hpMax', d.hpMax); set('hpCur', d.hpCur);
-  set('mpMax', d.mpMax); set('mpCur', d.mpCur);
-  set('ipMax', d.ipMax); set('ipCur', d.ipCur);
-  set('fpCount', d.fp);
-  set('backpack', d.backpack);
-  set('acc-name', d.accName); set('acc-desc', d.accDesc);
-  set('arm-name', d.armName); set('arm-desc', d.armDesc);
-  set('mh-name', d.mhName); set('mh-desc', d.mhDesc);
-  set('oh-name', d.ohName); set('oh-desc', d.ohDesc);
-  set('heroicSkills', d.heroicSkills);
-  set('ritualsNotes', d.ritualsNotes);
+  set('xpCurrent', d.xp);                   set('zenit',   d.z  ?? d.zenit);
+  set('initMod',   d.im ?? d.initMod);      set('defense', d.df ?? d.defense);
+  set('magDef',    d.md ?? d.magDef);
+  set('dex-base',  d.dxb ?? d.dexBase);     set('dex-cur', d.dxc ?? d.dexCur);
+  set('ins-base',  d.inb ?? d.insBase);     set('ins-cur', d.inc ?? d.insCur);
+  set('mig-base',  d.mgb ?? d.migBase);     set('mig-cur', d.mgc ?? d.migCur);
+  set('wlp-base',  d.wpb ?? d.wlpBase);     set('wlp-cur', d.wpc ?? d.wlpCur);
+  set('hpMax',     d.hx  ?? d.hpMax);       set('hpCur',   d.hc ?? d.hpCur);
+  set('mpMax',     d.mx  ?? d.mpMax);       set('mpCur',   d.mc ?? d.mpCur);
+  set('ipMax',     d.ix  ?? d.ipMax);       set('ipCur',   d.ic ?? d.ipCur);
+  set('fpCount',   d.fp);
+  set('backpack',  d.bp  ?? d.backpack);
+  set('acc-name',  d.acn ?? d.accName);     set('acc-desc', d.acd ?? d.accDesc);
+  set('arm-name',  d.amn ?? d.armName);     set('arm-desc', d.amd ?? d.armDesc);
+  set('mh-name',   d.mhn ?? d.mhName);      set('mh-desc',  d.mhd ?? d.mhDesc);
+  set('oh-name',   d.ohn ?? d.ohName);      set('oh-desc',  d.ohd ?? d.ohDesc);
+  set('heroicSkills',  d.hs ?? d.heroicSkills);
+  set('ritualsNotes',  d.rn ?? d.ritualsNotes);
 
   // Statuses
+  const sa = d.sa ?? d.statusesActive ?? [];
   document.querySelectorAll('.status-item').forEach(el => {
-    const active = (d.statusesActive || []).includes(el.dataset.status);
+    const active = sa.includes(el.dataset.status);
     el.classList.toggle('active-status', active);
     el.querySelector('.status-check').textContent = active ? '✗' : '';
   });
 
   // Martial
+  const ma = d.ma ?? d.martialChecked ?? [];
   document.querySelectorAll('.martial-item').forEach(el => {
-    const checked = (d.martialChecked || []).includes(el.querySelector('span').textContent);
+    const checked = ma.includes(el.querySelector('span').textContent);
     el.classList.toggle('checked', checked);
     el.querySelector('.martial-box').textContent = checked ? '✓' : '';
   });
 
   // Disciplines
+  const da = d.da ?? d.disciplinesChecked ?? [];
   document.querySelectorAll('.disc-item').forEach(el => {
-    const checked = (d.disciplinesChecked || []).includes(el.querySelector('span').textContent);
+    const checked = da.includes(el.querySelector('span').textContent);
     el.classList.toggle('checked', checked);
     el.querySelector('.disc-box').textContent = checked ? '✓' : '';
   });
 
-  if (d.bonds) { bonds = d.bonds; renderBonds(); }
-  if (d.primaryClasses) { primaryClasses = d.primaryClasses; renderPrimaryClasses(); }
-  if (d.otherClasses) { otherClasses = d.otherClasses; renderOtherClasses(); }
-  if (d.spells) { spells = d.spells; renderSpells(); }
+  const rawBonds = d.bo ?? d.bonds;
+  if (rawBonds) {
+    bonds = rawBonds.map(b => ({ name: b.n ?? b.name, feelings: b.f ?? b.feelings ?? [] }));
+    renderBonds();
+  }
+  const rawPrimary = d.pc ?? d.primaryClasses;
+  if (rawPrimary) {
+    primaryClasses = rawPrimary.map(c => ({ name: c.n ?? c.name, benefits: c.b ?? c.benefits, skills: c.s ?? c.skills }));
+    renderPrimaryClasses();
+  }
+  const rawOther = d.oc ?? d.otherClasses;
+  if (rawOther) {
+    otherClasses = rawOther.map(c => ({ name: c.n ?? c.name, benefits: c.b ?? c.benefits, skills: c.s ?? c.skills }));
+    renderOtherClasses();
+  }
+  const rawSpells = d.sp ?? d.spells;
+  if (rawSpells) {
+    spells = rawSpells.map(s => ({ name: s.n ?? s.name, notes: s.nt ?? s.notes, mp: s.mp, targets: s.tg ?? s.targets, duration: s.dr ?? s.duration }));
+    renderSpells();
+  }
 
   renderFP();
   updateXPBar();
@@ -363,7 +402,7 @@ function exportSheet() {
   const blob = new Blob([json], { type: 'application/json' });
   const url = URL.createObjectURL(blob);
   const a = document.createElement('a');
-  const charName = (data.name || 'character').replace(/[^a-z0-9_\- ]/gi, '').trim() || 'character';
+  const charName = (data.n || 'character').replace(/[^a-z0-9_\- ]/gi, '').trim() || 'character';
   a.href = url;
   a.download = charName + '-fabula-ultima.json';
   a.click();