:root {
  --bg: #f6f7f9; --panel: #ffffff; --text: #1d2129; --muted: #6b7280; --line: #e3e6ea;
  --primary: #2458d6; --primary-text: #ffffff; --primary-soft: #eaf0fd;
  --ok: #17803d; --ok-bg: #e7f6ec; --ok-line: #a6dcb8;
  --warn: #9a6400; --warn-bg: #fdf4e2; --warn-line: #ecc98a;
  --bad: #c0283f; --bad-bg: #fdecef; --bad-line: #f0a3b1;
  --none: #525a66; --none-bg: #f0f1f3; --none-line: #d0d3d9;
  --code-bg: #f2f3f5; --shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.04);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111317; --panel: #1a1d22; --text: #e6e8eb; --muted: #9aa1ab; --line: #2c3037;
    --primary: #5b8cff; --primary-text: #0b1020; --primary-soft: #1d2740;
    --ok: #4ccb7c; --ok-bg: #13291c; --ok-line: #24553a;
    --warn: #f0b64a; --warn-bg: #2d2412; --warn-line: #5a4719;
    --bad: #ff7088; --bad-bg: #321a20; --bad-line: #6a2a37;
    --none: #b0b6bf; --none-bg: #22262c; --none-line: #353a42;
    --code-bg: #23272e; --shadow: none;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.65 -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif; }
a { color: var(--primary); }
code { font: 12.5px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--code-bg); padding: 1px 5px; border-radius: 4px; word-break: break-all; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
[hidden] { display: none !important; }

.topbar { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px max(16px, calc((100% - 1120px) / 2)); background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); text-decoration: none; }
.brand__mark { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--primary); color: var(--primary-text); font-size: 12px; letter-spacing: .5px; }
.nav { display: flex; align-items: center; gap: 18px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
.nav a:hover { color: var(--text); }
.lang { border: 1px solid var(--line); background: var(--panel); color: var(--text); border-radius: 6px; padding: 4px 10px; font-size: 13px; cursor: pointer; }

main, .page { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.hero { text-align: center; padding: 56px 0 24px; }
.hero h1 { font-size: clamp(26px, 4.4vw, 40px); line-height: 1.2; margin: 0 0 12px; letter-spacing: -.01em; }
.hero__sub { max-width: 720px; margin: 0 auto; color: var(--muted); }
.badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 18px; list-style: none; padding: 0; margin: 18px 0 28px; font-size: 13px; color: var(--muted); }
.badges li::before { content: "✓ "; color: var(--ok); font-weight: 700; }

.picker { max-width: 760px; margin: 0 auto; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; box-shadow: var(--shadow); text-align: left; }
.tabs { display: inline-flex; gap: 4px; background: var(--code-bg); border-radius: 8px; padding: 3px; margin-bottom: 14px; }
.tab { border: 0; background: transparent; color: var(--muted); padding: 6px 14px; border-radius: 6px; font-size: 14px; cursor: pointer; }
.tab.on { background: var(--panel); color: var(--text); font-weight: 600; box-shadow: var(--shadow); }
.drop { border: 2px dashed var(--line); border-radius: 12px; padding: 34px 16px; text-align: center; cursor: pointer; transition: border-color .15s, background .15s; }
.drop:hover, .drop.over, .drop:focus-visible { border-color: var(--primary); background: var(--primary-soft); outline: none; }
.drop__icon { font-size: 26px; color: var(--primary); }
.drop__hint { font-weight: 600; margin: 6px 0 2px; }
.drop__sub { color: var(--muted); font-size: 13px; margin-bottom: 14px; }
.urlrow { display: flex; gap: 8px; }
.urlrow input { flex: 1; min-width: 0; height: 42px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 14px; }
.urlrow input:focus { outline: 2px solid var(--primary); outline-offset: -1px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 40px; padding: 0 18px; border: 1px solid var(--primary); border-radius: 8px; background: var(--primary); color: var(--primary-text); font-size: 14px; font-weight: 600; cursor: pointer; text-decoration: none; white-space: nowrap; }
.btn--ghost { background: var(--panel); color: var(--text); border-color: var(--line); font-weight: 500; }
.btn:disabled { opacity: .6; cursor: default; }
.samples { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 14px; font-size: 13px; }
.chip { border: 1px solid var(--line); background: var(--bg); color: var(--text); border-radius: 999px; padding: 4px 12px; font-size: 13px; cursor: pointer; }
.chip:hover { border-color: var(--primary); color: var(--primary); }
.status-msg { max-width: 760px; margin: 14px auto 0; padding: 10px 14px; border-radius: 8px; background: var(--primary-soft); color: var(--text); font-size: 14px; }
.status-msg--error { background: var(--bad-bg); color: var(--bad); }

.result { display: grid; gap: 16px; padding: 8px 0 24px; scroll-margin-top: 70px; }
.result:empty { display: none; }
.verdict { display: flex; gap: 14px; align-items: flex-start; padding: 16px 18px; border-radius: 12px; border: 1px solid; }
.verdict__icon { flex: none; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; color: #fff; font-weight: 800; }
.verdict__title { font-weight: 700; font-size: 17px; }
.verdict__sub { color: var(--muted); font-size: 14px; }
.verdict--trusted { background: var(--ok-bg); border-color: var(--ok-line); } .verdict--trusted .verdict__icon { background: var(--ok); }
.verdict--valid { background: var(--warn-bg); border-color: var(--warn-line); } .verdict--valid .verdict__icon { background: var(--warn); }
.verdict--invalid { background: var(--bad-bg); border-color: var(--bad-line); } .verdict--invalid .verdict__icon { background: var(--bad); }
.verdict--none { background: var(--none-bg); border-color: var(--none-line); } .verdict--none .verdict__icon { background: var(--none); }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px; box-shadow: var(--shadow); min-width: 0; }
.card h3 { margin: 0 0 12px; font-size: 16px; }
.card h4 { margin: 16px 0 8px; font-size: 14px; }
.card__head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 12px; }
.card__head h3 { margin: 0; flex: 1; }
.summary { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr); gap: 22px; }
.card__media { display: grid; gap: 10px; align-content: start; }
.thumb { margin: 0; display: grid; gap: 6px; color: var(--muted); font-size: 12.5px; }
.thumb img { width: 100%; max-height: 360px; object-fit: contain; border-radius: 8px; border: 1px solid var(--line); background: var(--code-bg); }
.fields { margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px 20px; align-content: start; }
.field dt { font-size: 12.5px; color: var(--muted); }
.field dd { margin: 2px 0 0; font-weight: 600; word-break: break-word; }
.cert--trusted dd { color: var(--ok); } .cert--valid dd { color: var(--warn); } .cert--invalid dd { color: var(--bad); }
.ai--on dd { color: var(--bad); }
.result-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.timeline { margin: 0; padding-left: 20px; display: grid; gap: 10px; }
.timeline__title { font-weight: 600; }
.timeline__meta { color: var(--muted); font-size: 13px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.timeline__desc { font-size: 13px; }
.pill { display: inline-block; padding: 1px 8px; border-radius: 999px; background: var(--code-bg); color: var(--text); font-size: 12px; }
.pill--ai { background: var(--bad-bg); color: var(--bad); }
.ingredients { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ingredients li { display: flex; gap: 12px; align-items: center; }
.ingredients img, .ingredients__ph { flex: none; width: 52px; height: 52px; border-radius: 6px; object-fit: cover; border: 1px solid var(--line); display: grid; place-items: center; color: var(--muted); }
.ingredients__title { font-weight: 600; word-break: break-all; }
.bad { color: var(--bad); font-size: 13px; }
.counts { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.count { padding: 2px 10px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.count--ok { background: var(--ok-bg); color: var(--ok); } .count--info { background: var(--none-bg); color: var(--none); }
.count--fail { background: var(--bad-bg); color: var(--bad); } .count--fail.zero { background: var(--none-bg); color: var(--muted); }
.status { list-style: none; margin: 0 0 8px; padding: 0; display: grid; gap: 6px; font-size: 13px; }
.status li { display: flex; flex-wrap: wrap; gap: 4px 10px; padding: 6px 10px; border-radius: 6px; background: var(--code-bg); }
.status--fail li { background: var(--bad-bg); } .status--fail code { background: transparent; color: var(--bad); }
.status span { color: var(--muted); }
details > summary { cursor: pointer; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.segs { display: inline-flex; background: var(--code-bg); border-radius: 7px; padding: 2px; }
.seg { border: 0; background: transparent; color: var(--muted); padding: 4px 12px; border-radius: 5px; font-size: 13px; cursor: pointer; }
.seg.on { background: var(--panel); color: var(--text); font-weight: 600; }
.tree { font: 12.5px/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; max-height: 560px; overflow: auto; }
.tree details { padding-left: 16px; }
.tree > details { padding-left: 0; }
.tree__leaf { padding-left: 16px; word-break: break-all; }
.tree__key { color: var(--primary); }
.tree__meta { color: var(--muted); }
.tree__val--string { color: var(--ok); } .tree__val--number, .tree__val--boolean { color: var(--warn); } .tree__val--null { color: var(--muted); }
.raw { margin: 0; max-height: 560px; overflow: auto; padding: 12px; background: var(--code-bg); border-radius: 8px; font: 12.5px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; white-space: pre-wrap; word-break: break-all; }

.learn, .faqs { padding: 40px 0 8px; scroll-margin-top: 70px; }
.learn h2, .faqs h2 { margin: 0 0 4px; font-size: 22px; }
.articles { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin-top: 16px; }
.article-card { display: block; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; color: var(--text); text-decoration: none; box-shadow: var(--shadow); }
.article-card:hover { border-color: var(--primary); }
.article-card__title { font-weight: 700; margin-bottom: 6px; }
.article-card p { margin: 0 0 8px; color: var(--muted); font-size: 14px; }
.faq__item { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin-top: 10px; }
.faq__item summary { font-weight: 600; }
.faq__item p { margin: 8px 0 0; color: var(--muted); }
.footer { max-width: 1120px; margin: 40px auto 0; padding: 20px 16px 32px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; text-align: center; }
.toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(8px); background: #222; color: #fff; padding: 8px 16px; border-radius: 8px; font-size: 14px; opacity: 0; pointer-events: none; transition: all .2s; z-index: 20; }
.toast.show { opacity: 1; transform: translateX(-50%); }

/* static article pages */
.page { padding-top: 28px; }
.article { max-width: 760px; margin: 0 auto; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 28px 32px; box-shadow: var(--shadow); }
.article h1 { font-size: clamp(24px, 3.6vw, 32px); line-height: 1.25; margin: 0 0 6px; }
.article h2 { font-size: 19px; margin: 26px 0 8px; }
.article li { margin: 4px 0; }
.crumbs { max-width: 760px; margin: 0 auto 12px; font-size: 13px; }
.more { max-width: 760px; margin: 22px auto 0; }
.more ul { padding-left: 18px; }

@media (max-width: 760px) {
  .nav a { display: none; }
  .hero { padding-top: 32px; }
  .summary, .grid2 { grid-template-columns: 1fr; }
  .urlrow { flex-direction: column; }
  .urlrow .btn { width: 100%; }
  .article { padding: 20px 18px; }
}

.cleared-note{margin:10px 0 0;font-size:13px;color:var(--muted,#6b7280)}