:root{color-scheme:light;--ink:#4b343e;--muted:#846c74;--accent:#ac667e;--accent-soft:#ead5dd;--bg:#f5ebe7;--glass:rgba(255,255,255,.55);--border:rgba(255,255,255,.8);--shadow:0 12px 40px rgba(120,76,95,.07);--input:rgba(255,255,255,.55);--orb:#e8c0cb}
:root[data-theme=dark]{color-scheme:dark;--ink:#f1e2e8;--muted:#b6a0aa;--accent:#e6a6be;--accent-soft:#684554;--bg:#211b26;--glass:rgba(54,43,58,.72);--border:rgba(255,255,255,.12);--shadow:0 15px 45px rgba(0,0,0,.2);--input:rgba(20,17,25,.55);--orb:#643747}
:root[data-background=sage]{--orb:#b3d3be;--accent:#5c8872;--accent-soft:#ccdfd3}:root[data-background=sky]{--orb:#adc6e5;--accent:#6488ae;--accent-soft:#d0deeb}:root[data-theme=dark][data-background=sage]{--orb:#304f45;--accent:#a0c8ae;--accent-soft:#365045}:root[data-theme=dark][data-background=sky]{--orb:#334661;--accent:#a7c8f0;--accent-soft:#354d69}
*{box-sizing:border-box} [hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Noto Serif SC","Songti SC",STSong,-apple-system,"PingFang SC",serif;font-size:15px;line-height:1.78;letter-spacing:.02em;transition:background .25s,color .25s}button,input,select{font:inherit}button{cursor:pointer;-webkit-tap-highlight-color:transparent}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}a{color:inherit;text-decoration:none}p,h1,h2{margin:0}p{color:var(--muted)}h1{font-size:30px;font-weight:600;letter-spacing:.03em;line-height:1.4}h2{font-size:18px;font-weight:600}small{font-size:12px}.ambient{position:fixed;inset:env(safe-area-inset-top,0px) 0 0 0;pointer-events:none;z-index:-1;background:radial-gradient(ellipse at 10% 5%,var(--orb),transparent 55%),radial-gradient(ellipse at 95% 60%,var(--accent-soft),transparent 60%);opacity:.7}.shell{position:relative;max-width:820px;min-height:100dvh;margin:auto;padding:0 36px}.topbar{display:flex;justify-content:space-between;align-items:center;padding:calc(27px + env(safe-area-inset-top)) 0 27px}.brand{display:flex;align-items:center;gap:11px;font-size:19px;font-weight:600;letter-spacing:.1em}.brand small{display:block;font-size:8px;letter-spacing:.22em;color:var(--muted);font-weight:400;margin-top:2px}.brand-icon{font-size:28px;color:var(--accent);font-weight:400}.icon-button{border:1px solid var(--border);background:var(--glass);color:var(--ink);border-radius:50%;width:43px;height:43px;font-size:23px;display:grid;place-items:center}.glass{background:var(--glass);border:1px solid var(--border);box-shadow:var(--shadow);backdrop-filter:blur(22px) saturate(140%);-webkit-backdrop-filter:blur(22px) saturate(140%);border-radius:26px}.eyebrow{color:var(--accent);font-size:10px;letter-spacing:.17em;display:block;font-weight:500}.welcome{display:flex;align-items:center;justify-content:space-between;margin:14px 0 27px}.welcome h1{margin-top:9px}.home-badge{font-size:10px;color:var(--muted);border:1px solid var(--border);padding:7px 12px;border-radius:30px;white-space:nowrap}.home-badge i{display:inline-block;background:var(--accent);width:5px;height:5px;border-radius:50%;margin-left:4px}.together{padding:25px 28px 17px}.card-label{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.small-label{font-size:8px;letter-spacing:.14em}.pair{display:flex;align-items:center;justify-content:center;gap:30px;margin:31px 0 27px}.person{text-align:center;min-width:95px;max-width:30%}.avatar{width:92px;height:92px;display:grid;place-items:center;border-radius:50%;margin:auto;box-shadow:0 0 0 6px var(--glass),0 0 0 7px var(--border);overflow:hidden;font-family:serif;font-size:30px;color:var(--accent);background:linear-gradient(140deg,var(--accent-soft),var(--glass))}.ziwei-avatar{background:linear-gradient(140deg,var(--glass),var(--accent-soft))}.avatar img{width:100%;height:100%;object-fit:cover}.person h2{font-size:16px;margin:17px 0 1px;overflow-wrap:anywhere}.person p{font-size:10px}.heartbeat{width:180px;min-width:65px;text-align:center;color:var(--accent);align-self:center;margin-top:-10px}.heartbeat>span{font-size:19px}.heartbeat svg{display:block;width:100%;height:55px;overflow:visible;fill:none;stroke:var(--accent);stroke-width:1.8}.pulse-base{opacity:.15}.pulse{stroke-dasharray:90 250;animation:heartbeat 3.8s linear infinite}.heartbeat small{font-size:8px;letter-spacing:.15em;opacity:.7}@keyframes heartbeat{from{stroke-dashoffset:340}to{stroke-dashoffset:0}}.anniversaries{display:grid;grid-template-columns:1.1fr 1fr 1fr;padding:22px 0 15px;border-top:1px solid var(--border);text-align:center}.anniversaries>div+div{border-left:1px solid var(--border)}.anniversaries small{display:block;color:var(--muted);font-size:10px;margin-bottom:8px}.anniversaries strong{font-size:24px;font-weight:500}.anniversaries strong span{font-size:10px;margin-left:5px;color:var(--muted)}.anniversaries .date-value{font-size:14px;line-height:38px}.footnote{font-size:9px;text-align:center;opacity:.8}.today{margin-top:18px;padding:22px 24px;display:flex;gap:17px;align-items:center}.status-orbit{font-size:28px;color:var(--accent);background:var(--glass);width:48px;height:48px;border-radius:17px;display:grid;place-items:center;flex-shrink:0}.today h2{font-size:15px;margin:6px 0}.today p{font-size:10px}.today .eyebrow{font-size:9px;letter-spacing:.12em}.status-tag{margin-left:auto;font-size:9px;color:var(--muted);white-space:nowrap}.memorial{position:relative;padding:29px 32px 25px;margin-top:18px}.memorial>.eyebrow{font-size:10px}.quote-mark{position:absolute;right:25px;top:10px;font:70px Georgia,serif;color:var(--accent);opacity:.2}blockquote{margin:24px 0 20px;font-family:"Songti SC","Noto Serif SC",serif;font-size:17px;line-height:2.1;letter-spacing:.03em}.signature{text-align:right;color:var(--ink);font-family:serif;font-size:13px}.signature span{font-family:system-ui;font-size:8px;margin-left:13px;color:var(--muted);padding:3px 7px;border:1px solid var(--border);border-radius:12px}.home-footer{text-align:center;font-size:9px;letter-spacing:.12em;margin-top:25px}.home-footer span{margin-left:5px;color:var(--accent)}nav{position:fixed;bottom:calc(16px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);width:min(calc(100% - 40px),690px);z-index:5;padding:8px;display:grid;grid-template-columns:repeat(5,1fr);border-radius:26px;background:var(--glass)}nav button{border:0;background:transparent;color:var(--muted);display:grid;justify-items:center;align-content:center;gap:1px;min-height:60px;padding:5px 0;font-size:10px;border-radius:20px}nav button>span{font-size:23px;line-height:30px}nav button.active{background:var(--accent-soft);color:var(--ink)}nav .home-nav>span{font-size:28px}.section-heading{margin:20px 0 25px}.section-heading h1{margin-top:9px}.empty{text-align:center;min-height:350px;display:flex;flex-direction:column;justify-content:center;padding:30px}.empty-icon{font-size:45px;color:var(--accent);margin-bottom:20px}.empty h2{margin-bottom:12px}.empty p{font-size:13px}.empty small{color:var(--muted);font-size:11px;margin-top:15px}.composer{display:flex;gap:10px;padding:12px;margin-top:15px}.composer input{border:0;background:transparent}.composer button{border:0;background:var(--accent-soft);color:var(--ink);border-radius:50%;width:45px;flex-shrink:0}.category-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:15px}.category-grid span{padding:16px;text-align:center;color:var(--muted)}.login{max-width:440px;margin:6vh auto 60px;padding:38px}.login h1{font-size:25px;margin:16px 0 10px}.login p{font-size:13px}.login form{margin:30px 0 12px}.login .hint{font-size:10px;margin:17px 0}label{display:block;font-size:12px;color:var(--muted);margin:12px 0 7px}input,select{width:100%;min-width:0;border:1px solid var(--border);border-radius:13px;background:var(--input);color:var(--ink);padding:13px;font-size:16px}input[type=file]{font-size:12px;padding:10px}button.primary,button.secondary{border:1px solid var(--border);border-radius:14px;padding:13px 18px;width:100%;margin-top:15px;font-size:13px}.primary{background:var(--accent);color:#fff}.primary span{float:right}.secondary{background:var(--input);color:var(--ink)}.text-button{border:0;background:transparent;color:var(--accent);padding:10px 0;font-size:11px}.error{color:#b94058!important;font-size:12px;margin-top:12px}.hint{font-size:11px;line-height:1.8;margin-top:10px}dialog{color:var(--ink);padding:28px;width:min(92%,500px);max-height:85dvh;overflow:auto;background:var(--bg)!important}dialog::backdrop{background:rgba(25,15,25,.35);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.dialog-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.dialog-heading h2{margin-top:5px}fieldset{border:0;margin:20px 0 0;padding:0}legend{font-size:14px;font-weight:600;margin-bottom:5px}.security{border-top:1px solid var(--border);padding-top:20px}#settingsMessage{font-size:12px;margin-top:12px}details{font-size:12px;margin-top:18px}summary{cursor:pointer;color:var(--accent)}#historyList{padding-left:20px;color:var(--muted);font-size:11px}.logout-actions{display:flex;gap:10px}
@media(max-width:550px){.shell{padding:0 20px}.topbar{padding-top:calc(20px + env(safe-area-inset-top));padding-bottom:16px}.brand{font-size:17px}h1{font-size:25px}.welcome{margin:12px 0 21px}.home-badge{padding:5px 8px;font-size:8px}.together{padding:21px 18px 15px}.pair{gap:16px;margin:30px 0}.avatar{width:72px;height:72px;font-size:25px}.person{min-width:75px}.heartbeat{width:95px}.heartbeat svg{height:42px}.person h2{font-size:14px}.small-label{font-size:6px}.anniversaries strong{font-size:21px}.anniversaries .date-value{font-size:12px;line-height:34px}.today{padding:19px 17px;gap:12px}.today h2{font-size:13px}.status-orbit{width:40px;height:40px;font-size:24px}.memorial{padding:24px}blockquote{font-size:15px;line-height:2.2;margin-top:21px}.login{padding:28px;margin-top:7vh}nav{width:calc(100% - 32px);bottom:calc(10px + env(safe-area-inset-bottom))}}
@media(max-width:360px){.shell{padding:0 14px}.home-badge{display:none}.pair{gap:9px}.person{min-width:64px}.avatar{width:62px;height:62px}.heartbeat{width:80px}.memorial{padding:20px}.anniversaries strong{font-size:18px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}.pulse{stroke-dasharray:none}}


/* One source of truth for the fixed navigation geometry and content clearance. */
:root{--nav-h:76px;--nav-offset:16px;--nav-clear:44px}
@media(max-width:550px){:root{--nav-offset:12px}}
nav{bottom:calc(var(--nav-offset) + env(safe-area-inset-bottom,0px))}
.panel{padding-bottom:calc(var(--nav-h) + var(--nav-offset) + var(--nav-clear) + env(safe-area-inset-bottom,0px))}
/* Secondary status text needs to remain legible on the dark glass surface. */
:root[data-theme=dark]{--muted:#d1bec8}
:root[data-theme=dark] .today p,
:root[data-theme=dark] .status-tag,
:root[data-theme=dark] .footnote{color:var(--muted);opacity:1}


/* Glass material: derived from the user-provided reference
   glass-material-recipe-for-work.md (2026-10-10).
   Permission to borrow was relayed by the user; distribution scope unverified.
   Keep interactive content on its own layer for iOS keyboard compositing. */
:root{
  --glass-blur:16px;
  --glass-fill-rgb:255 255 255;
  --glass-fill-alpha-top:.68;
  --glass-fill-alpha-bottom:.48;
  --glass-rim:rgba(255,255,255,.65);
  --glass-inner-highlight:rgba(255,255,255,.72);
  --glass-edge:rgba(255,255,255,.44);
  --glass-material-shadow:rgba(120,76,95,.10);
}
:root[data-theme=dark]{
  --glass-fill-rgb:63 51 67;
  --glass-fill-alpha-top:.82;
  --glass-fill-alpha-bottom:.74;
  --glass-rim:rgba(255,255,255,.14);
  --glass-inner-highlight:rgba(255,255,255,.20);
  --glass-edge:rgba(255,255,255,.17);
  --glass-material-shadow:rgba(0,0,0,.22);
}
.glass{
  position:relative;
  z-index:0;
  background:transparent;
  border:0;
  box-shadow:none;
  -webkit-backdrop-filter:none;
  backdrop-filter:none;
}
.glass::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  pointer-events:none;
  border-radius:inherit;
  background:linear-gradient(180deg,rgb(var(--glass-fill-rgb) / var(--glass-fill-alpha-top)),rgb(var(--glass-fill-rgb) / var(--glass-fill-alpha-bottom)));
  border:1px solid var(--glass-edge);
  box-shadow:0 0 0 1px var(--glass-rim),0 8px 28px var(--glass-material-shadow),inset 0 1px 0 var(--glass-inner-highlight);
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(132%);
  backdrop-filter:blur(var(--glass-blur)) saturate(132%);
}
/* The settings dialog has its own opaque canvas; avoid a translucent modal. */
dialog.glass{background:var(--bg)}
dialog.glass::before{display:none}
/* Browser fallback must retain readable opaque cards. */
@supports not ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){
  .glass::before{background:var(--bg)}
}

/* Preserve floating navigation above panels after the glass stacking change. */
/* 悬浮胶囊：钉在底部不动、浮在内容之上，但四周留空（不贴边、不贴底）。
   bottom 同时受 :root[data-theme=dark] 的优先级影响会让它失效，这里用 !important 锁死。 */
nav.glass{
  position:fixed!important;left:50%!important;transform:translateX(-50%)!important;
  bottom:calc(var(--nav-offset) + env(safe-area-inset-bottom,0px))!important;
  width:min(calc(100% - 36px),690px)!important;z-index:20!important;
  background:var(--glass)!important;border:1px solid var(--border)!important;
  box-shadow:0 12px 34px rgba(70,45,60,.20)!important;backdrop-filter:blur(22px) saturate(140%)!important;
  -webkit-backdrop-filter:blur(22px) saturate(140%)!important;
}


/* 底部导航图标：统一的细腻线性风格 */
nav button svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
nav .home-nav svg{width:25px;height:25px;stroke-width:1.6}
nav button.active svg{stroke:var(--accent)}


/* Mobile design system: warm rose, cream paper, legible Chinese typography. */
:root{
  --ui-sans:"Noto Serif SC","Songti SC",STSong,-apple-system,"PingFang SC",serif;
  --ui-serif:"Songti SC","STSong","Noto Serif SC",serif;
  --nav-clear:68px; /* 44px legacy + 24px safety margin; >= 18px shortfall */
}
body,button,input,select,textarea{font-family:var(--ui-sans)}
body{font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,.brand{letter-spacing:.045em}
h1{font-weight:600}h2{font-weight:600}
:root:not([data-theme=dark]){--bg:#fff9f7;--ink:#503f48;--muted:#7c6a73;--accent:#c97d9d;--accent-soft:#f9e5ed;--border:rgba(195,139,161,.26);--input:#fff9fb}
:root[data-theme=dark]{--ink:#f9edf2;--accent:#e8a9c5;--accent-soft:#493343;--border:rgba(235,190,212,.20)}
.panel:not(.chat-panel){padding-bottom:calc(var(--nav-h) + var(--nav-offset) + var(--nav-clear) + env(safe-area-inset-bottom,0px))}
.panel .section-heading{margin-bottom:22px}
.panel .section-heading .eyebrow{font-size:10px;letter-spacing:.19em}
.panel .section-heading h1{font-family:var(--ui-serif);font-size:clamp(24px,6vw,30px);font-weight:600}
.empty.glass{min-height:min(42dvh,350px);padding:28px 24px}
.empty-icon{font-family:var(--ui-serif);font-size:40px}
.category-grid .glass{font-size:13px;border-radius:20px}
nav.glass{isolation:isolate;border-radius:30px!important}
nav.glass button{min-width:0;min-height:60px;gap:4px;font-size:10px;letter-spacing:.025em}
nav.glass button svg{width:24px;height:24px;stroke-width:1.55;filter:drop-shadow(0 2px 2px rgba(172,96,128,.12))}
nav.glass button.active{background:var(--accent-soft);color:var(--ink)}
nav.glass button.active svg{stroke:var(--accent)}
@media(max-width:550px){.shell{padding-inline:18px}.panel:not(.chat-panel){padding-bottom:calc(var(--nav-h) + var(--nav-offset) + var(--nav-clear) + env(safe-area-inset-bottom,0px))}}

/* iPhone visual QA: lower the floating capsule by 6px without changing its fixed positioning. */
:root{--nav-offset:10px}
@media(max-width:550px){:root{--nav-offset:6px}}

/* iPhone follow-up: visually move the fixed capsule 12px lower; unlike the prior 6px offset adjustment this translates the rendered element directly. */
@media(max-width:550px){nav.glass{transform:translate(-50%,12px)!important}}

/* iPhone home compact pass: preserve the approved floating navigation position. */
@media(max-width:550px){
  .welcome{margin:8px 0 16px}
  .together{padding:17px 18px 13px}
  .pair{gap:14px;margin:20px 0 19px}
  .avatar{width:62px;height:62px}
  .person h2{margin:12px 0 1px}
  .heartbeat{width:88px}
  .heartbeat svg{height:35px}
  .anniversaries{padding:17px 0 11px}
  .anniversaries small{margin-bottom:5px}
  .footnote{line-height:1.6}
  .today{margin-top:14px}
  .memorial{margin-top:14px}
  #home.panel{padding-bottom:calc(var(--nav-h) + var(--nav-offset) + var(--nav-clear) + 24px + env(safe-area-inset-bottom,0px))}
}

/* Memorial quotation: smaller, tighter typography on iPhone only. */
@media(max-width:550px){
  .memorial blockquote{font-size:12px;line-height:1.7;letter-spacing:.01em;margin:12px 0 12px;overflow-wrap:anywhere}
  .memorial{padding-top:18px;padding-bottom:18px}
  .memorial .signature{font-size:11px}
}

/* Root canvas: keep the document's own background continuous across iOS viewport changes.
   Does not change status-bar metadata, scrolling, safe-area padding, or navigation. */
html{min-height:100%;background:transparent}
body{min-height:100%;background-color:transparent}

/* iOS root canvas and safe-area layout: shared across all panels. */
html,body{margin:0;min-height:100%;background:transparent}
/* The document remains the scrolling container; only the header's contents
   receive top safe-area spacing, never an offset on the document itself. */
.shell{min-height:100dvh}
.topbar{margin-top:0}

/* Put device unlock before the longer profile and appearance forms. */
#deviceSecurity{border-top:0;border-bottom:1px solid var(--border);margin-top:0;padding:0 0 18px}
#deviceSecurity legend{font-size:16px}
#registerPasskey{margin-top:10px}
#passkeyMessage{overflow-wrap:anywhere}

/* 背景色调：原来只改了光斑与强调色，没改真正画背景的 --bg，所以选了也还是粉的。
   这两个预设用更高优先级的选择器（0,3,1），否则会被后面的 :root:not([data-theme=dark]) 压掉。 */
:root:not([data-theme=dark])[data-background=sage]{--bg:#f2f6f1;--input:rgba(255,255,255,.62)}
:root:not([data-theme=dark])[data-background=sky]{--bg:#f1f5fa;--input:rgba(255,255,255,.62)}
:root[data-theme=dark][data-background=sage]{--bg:#1b2120}
:root[data-theme=dark][data-background=sky]{--bg:#1a1f27}