/* 美呀美 · 内容页面与服务体验 */
.u-page-hero { padding-top:clamp(3rem,7vw,7rem);padding-bottom:clamp(2.5rem,5vw,5rem); }
.u-page-hero .u-page-title { font-size:clamp(2.4rem,5.5vw,5rem);line-height:1.22;letter-spacing:-.04em;max-width:1100px;margin:1.4rem 0;overflow-wrap:anywhere; }
.u-page-intro { color:var(--text-2);max-width:720px; }
.u-reading-layout { display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:clamp(2rem,4vw,4rem);padding-bottom:var(--sec);align-items:start; }
.u-editor-paper { background:var(--paper);color:var(--paper-ink);border-radius:var(--r);padding:clamp(1.5rem,4vw,4rem); }
.u-editor-paper a:not(.u-btn) { color:var(--paper-ink);text-decoration:underline;text-underline-offset:4px; }
.u-editor-paper .u-eyebrow { color:var(--paper-ink-2); }
.u-editor-paper .u-eyebrow b { color:var(--paper-ink); }
.u-editor-paper.u-prose { line-height:1.95;overflow-wrap:anywhere; }
.u-editor-paper.u-prose p { margin:0 0 1.25em; }
.u-editor-paper.u-prose h2,.u-editor-paper.u-prose h3 { margin:1.8em 0 .8em;line-height:1.4; }
.u-editor-paper.u-prose > h2:first-child { margin-top:0; }
.u-editor-paper.u-prose img { max-width:100%!important;height:auto!important;margin:1.8rem auto; }
.u-editor-paper.u-prose ul,.u-editor-paper.u-prose ol { padding-left:1.5rem;list-style:revert;margin:1rem 0; }
.u-editor-paper.u-prose pre { overflow:auto;background:#e7e0d5;padding:1rem; }
.u-editor-paper.u-prose table { width:100%;max-width:100%;display:block;overflow:auto; }
.u-article-tags { display:flex;flex-wrap:wrap;gap:.5rem;margin-top:2rem;border-top:1px solid var(--paper-line);padding-top:1.5rem; }
.u-article-tags a { padding:.25rem .75rem;border:1px solid var(--paper-line);border-radius:99px;font-size:.85rem; }
.u-reading-aside { position:sticky;top:calc(var(--hh) + 2rem); }
.u-reading-aside h2 { font-size:1.5rem;margin:1rem 0 1.75rem; }
.u-reading-aside .u-related { display:grid;gap:1.5rem;margin-bottom:2rem;padding:0; }
.u-reading-aside .u-related a { display:grid;grid-template-columns:80px 1fr;gap:.4rem 1rem;padding-bottom:1.25rem;border-bottom:1px solid var(--line);font-size:.95rem; }
.u-reading-aside .u-related img { width:80px;aspect-ratio:1.2;object-fit:cover;grid-row:span 2;border-radius:3px; }
.u-reading-aside .u-related small { color:var(--text-2); }
.u-reading-aside .u-related a:hover span { color:var(--accent); }
.u-about-end { border-top:1px solid var(--line);padding-block:var(--sec); }
.u-about-end h2 { font-size:var(--t-hero);line-height:1.25;margin:1.5rem 0 2rem;letter-spacing:-.04em; }
.u-journal { padding-bottom:var(--sec); }
.u-journal-tabs { display:flex;flex-wrap:wrap;gap:.75rem;border-block:1px solid var(--line);padding:1.1rem 0;margin-bottom:2rem; }
.u-journal-tabs a { padding:.45rem 1rem;border-radius:99px;color:var(--text-2); }
.u-journal-tabs a:hover,.u-journal-tabs a.is-active { background:var(--accent);color:var(--accent-ink); }
.u-journal-row { display:grid;grid-template-columns:3rem 240px minmax(0,1fr);gap:2rem;padding:2.5rem 0;border-bottom:1px solid var(--line);align-items:start; }
.u-journal-number { color:var(--text-2);font-family:var(--font-serif);font-style:italic;font-size:1.7rem; }
.u-journal-image img { width:100%;aspect-ratio:1.5;object-fit:cover;border-radius:var(--r); }
.u-journal-row h2 { font-size:clamp(1.35rem,2.2vw,2rem);line-height:1.45;margin:.65rem 0 1rem; }
.u-journal-row h2 a:hover { color:var(--accent); }
.u-journal-summary { color:var(--text-2);max-width:750px; }
.u-journal-read { display:inline-block;color:var(--accent);margin-top:1.25rem; }
.u-contact-layout { display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,5vw,5rem);padding-bottom:var(--sec); }
.u-contact-phone { display:block;font-size:clamp(1.5rem,3vw,2.5rem);letter-spacing:-.03em;margin:1.5rem 0; }
.u-contact-info dl { display:grid;grid-template-columns:6rem 1fr;gap:1.1rem 1rem;font-size:.95rem; }
.u-contact-info dt { color:var(--text-2); }.u-contact-info dd { margin:0;overflow-wrap:anywhere; }
.u-contact-qrs { display:flex;gap:1.5rem;margin-top:3rem; }
.u-contact-qrs figure { max-width:150px; }.u-contact-qrs img { background:#fff;padding:.5rem;border-radius:var(--r);aspect-ratio:1; }
.u-contact-qrs figcaption { text-align:center;color:var(--text-2);font-size:.85rem;margin-top:.75rem; }
.u-contact-form h2 { font-size:1.8rem;line-height:1.4;margin:1rem 0 2rem; }
.u-form label { display:grid;gap:.5rem;margin-bottom:1.2rem;font-size:.9rem; }
.u-form input,.u-form textarea { width:100%;min-width:0;font:inherit;color:var(--paper-ink);background:#fff9;border:1px solid var(--paper-line);padding:.85rem 1rem;border-radius:var(--r); }
.u-form textarea { resize:vertical;min-height:130px; }
.u-form-pair { display:grid;grid-template-columns:1fr 1fr;gap:1rem; }
.u-form input:focus-visible,.u-form textarea:focus-visible { outline:2px solid #9e3500;outline-offset:2px; }
.u-form-status { margin-top:1rem;font-size:.9rem; }.u-form .u-btn:disabled { opacity:.5;cursor:wait; }
.u-captcha { display:flex;align-items:center;justify-content:center;align-self:center;min-height:44px; }.u-captcha img { max-height:60px; }
.u-license { max-width:1100px;padding-bottom:var(--sec); }
.u-tag-row { display:grid;grid-template-columns:3rem 1fr auto;gap:1.5rem;border-bottom:1px solid var(--line);padding:1.75rem 0;align-items:baseline; }
.u-tag-row h2 { font-size:1.35rem; }.u-tag-row time,.u-tag-row>span { color:var(--text-2);font-size:.85rem; }
/* AI 对话窗口：无 SDK，无前端凭证 */
.u-body .u-dock { bottom:1.25rem;right:var(--gutter); }
.u-dock__panel { max-height:calc(100dvh - 7rem);overflow:auto; }
.u-chat-launch { position:fixed;right:var(--gutter);bottom:5.5rem;z-index:95;padding:.7rem 1rem;border:1px solid var(--line);border-radius:99px;background:var(--s1);box-shadow:0 4px 20px #0003;font-size:.85rem; }
.u-chat-launch:hover { border-color:var(--accent); }
.u-chat { position:fixed;right:var(--gutter);bottom:1.25rem;z-index:140;width:min(410px,calc(100vw - 2rem));height:min(620px,calc(100dvh - 3rem));background:var(--s1);color:var(--text);border:1px solid var(--line);border-radius:12px;box-shadow:0 16px 80px #0008;display:flex;flex-direction:column; }
.u-chat[hidden],.u-chat-launch[hidden] { display:none; }
.u-chat-head { display:flex;align-items:center;justify-content:space-between;padding:1.1rem 1.25rem;border-bottom:1px solid var(--line); }
.u-chat-head p { font-size:.8rem;color:var(--text-2);margin-top:.25rem; }
.u-chat-head button { font-size:1.5rem;padding:.25rem .6rem; }
.u-chat-messages { flex:1;min-height:0;overflow:auto;padding:1.25rem;display:flex;flex-direction:column;gap:1rem;overscroll-behavior:contain; }
.u-chat-message { background:var(--s2);border-radius:8px;padding:.8rem 1rem;line-height:1.75;font-size:.9rem;white-space:pre-wrap;overflow-wrap:anywhere;max-width:95%;align-self:flex-start; }
.u-chat-message.is-user { background:var(--accent);color:var(--accent-ink);align-self:flex-end; }
.u-chat-message.is-error { border:1px solid var(--accent); }
.u-chat-suggestions { display:flex;flex-wrap:wrap;gap:.5rem;padding:0 1.25rem .75rem; }
.u-chat-suggestions button { border:1px solid var(--line);padding:.3rem .6rem;border-radius:99px;font-size:.75rem;color:var(--text-2); }
.u-chat-form { border-top:1px solid var(--line);padding:1rem 1.25rem;display:flex;gap:.75rem;align-items:end; }
.u-chat-form textarea { flex:1;min-width:0;resize:none;background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:6px;padding:.65rem;font:inherit;font-size:.9rem; }
.u-chat-form button { padding:.65rem .8rem;background:var(--accent);color:var(--accent-ink);border-radius:6px;font-size:.85rem; }
.u-chat-form button:disabled { opacity:.5;cursor:wait; }
.u-chat-form[hidden],.u-chat-suggestions[hidden] { display:none; }
.u-sr { position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0; }
.u-chat-contact { padding:.7rem 1.25rem;border-top:1px solid var(--line);font-size:.8rem;color:var(--text-2);display:flex;justify-content:space-between; }
.u-chat-contact button { color:var(--accent); }
@media(max-width:960px) {
  .u-reading-layout { grid-template-columns:minmax(0,1fr); }.u-reading-aside { position:static; }.u-reading-aside .u-related { grid-template-columns:1fr 1fr;gap:1.25rem; }
  .u-contact-layout { grid-template-columns:minmax(0,1fr); }.u-journal-row { grid-template-columns:2rem 170px minmax(0,1fr);gap:1rem; }
}
@media(max-width:640px) {
  .u-page-hero { padding-top:2rem; }.u-page-hero .u-page-title { font-size:2.4rem; }.u-page-intro { font-size:.9rem; }
  .u-journal-row { grid-template-columns:1fr;gap:1rem;padding-block:1.75rem; }.u-journal-number { display:none; }.u-journal-image { width:100%; }.u-journal-image img { aspect-ratio:2; }
  .u-reading-aside .u-related { grid-template-columns:1fr; }.u-form-pair { grid-template-columns:1fr;gap:0; }.u-tag-row { grid-template-columns:2rem 1fr;gap:1rem; }.u-tag-row time { grid-column:2; }
  .u-chat { right:1rem;bottom:1rem;height:min(620px,calc(100dvh - 2rem)); }.u-chat-launch { bottom:5.5rem; }
}