:root {
  --bg: #faf6f0; --surface: #ffffff; --surface-2: #f3ede4; --ink: #1f1b16; --muted: #6f665b;
  --line: #e6ddd0; --accent: #d9542f; --accent-ink: #ffffff; --accent-soft: #fbe6de;
  --ok: #2f7d4f; --warn: #b7791f; --danger: #c0392b;
  --ig: #c13584; --tt: #111111; --xhs: #ff2442;
  --radius: 14px; --shadow: 0 1px 2px rgba(31,27,22,.06), 0 6px 20px rgba(31,27,22,.06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151310; --surface: #1e1b17; --surface-2: #27231e; --ink: #f2ece4; --muted: #a59b8e;
    --line: #342f28; --accent: #ef7552; --accent-soft: #3a241c; --tt: #f2ece4;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.25); color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--ink); line-height: 1.5; font-size: 16px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5rem; }
h1 { font-size: 1.6rem; letter-spacing: -.01em; } h2 { font-size: 1.2rem; } h3 { font-size: 1.02rem; }
p { margin: 0 0 .75rem; }
.muted { color: var(--muted); } .small { font-size: .875rem; } .tiny { font-size: .78rem; }
.hidden { display: none !important; }

/* layout */
.topbar {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: .75rem;
  padding: .7rem 16px; background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.brand { font-weight: 800; font-size: 1.1rem; color: var(--ink); text-decoration: none; letter-spacing: -.02em; }
.brand b { color: var(--accent); }
.topbar .spacer { flex: 1; }
.wrap { max-width: 920px; margin: 0 auto; padding: 20px 16px 80px; }
.narrow { max-width: 460px; }
.row { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.stack > * + * { margin-top: .9rem; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.grid-thumbs { display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); }

/* cards */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.card.link { cursor: pointer; transition: transform .12s ease, border-color .12s; }
.card.link:hover { transform: translateY(-1px); border-color: var(--accent); }
.section { margin-top: 28px; }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: .5rem; margin-bottom: .6rem; }

/* forms */
label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .3rem; }
.field { margin-bottom: 14px; }
.hint { font-size: .8rem; color: var(--muted); margin-top: .25rem; }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px; padding: .65rem .75rem; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
textarea { min-height: 92px; resize: vertical; }
input[type=color] { width: 44px; height: 38px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); padding: 3px; }
.check { display: flex; align-items: center; gap: .5rem; font-weight: 500; cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--accent); }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem; font: inherit; font-weight: 600;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 999px;
  padding: .55rem 1.05rem; cursor: pointer; text-decoration: none; white-space: nowrap;
}
.btn:hover { border-color: var(--ink); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(.95); }
.btn.danger { color: var(--danger); }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.small { padding: .32rem .7rem; font-size: .85rem; }
.btn.block { width: 100%; padding: .75rem; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: .45rem; }
.chip {
  border: 1px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 999px;
  padding: .35rem .8rem; font: inherit; font-size: .9rem; cursor: pointer;
}
.chip.on { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.tag { display: inline-block; font-size: .75rem; font-weight: 700; padding: .12rem .55rem; border-radius: 999px; background: var(--surface-2); color: var(--muted); }
.tag.ok { background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); }
.tag.warn { background: color-mix(in srgb, var(--warn) 18%, transparent); color: var(--warn); }
.tag.danger { background: color-mix(in srgb, var(--danger) 15%, transparent); color: var(--danger); }

/* platform badges */
.pf { display: inline-flex; align-items: center; gap: .35rem; font-weight: 700; }
.pf i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.pf-instagram i { background: var(--ig); } .pf-tiktok i { background: var(--tt); } .pf-xiaohongshu i { background: var(--xhs); }

/* tabs */
.tabs { display: flex; gap: .3rem; overflow-x: auto; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.tab { border: 0; background: none; font: inherit; font-weight: 600; color: var(--muted); padding: .6rem .8rem; border-bottom: 2px solid transparent; cursor: pointer; white-space: nowrap; }
.tab.on { color: var(--ink); border-bottom-color: var(--accent); }

/* wizard */
.steps { display: flex; gap: 6px; margin: 4px 0 18px; }
.steps span { flex: 1; height: 4px; border-radius: 4px; background: var(--line); }
.steps span.on { background: var(--accent); }

/* uploads & thumbs */
.drop {
  border: 1.5px dashed var(--line); border-radius: var(--radius); padding: 16px; text-align: center; background: var(--surface);
}
.drop .btn { margin-top: .4rem; }
.thumb { position: relative; aspect-ratio: 1; border-radius: 10px; overflow: hidden; background: var(--surface-2); border: 2px solid transparent; }
.thumb img, .thumb video { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb.sel { border-color: var(--accent); }
.thumb .x {
  position: absolute; top: 4px; right: 4px; width: 26px; height: 26px; border-radius: 50%; border: 0;
  background: rgba(0,0,0,.6); color: #fff; cursor: pointer; font-size: 14px; line-height: 26px; padding: 0;
}
.thumb .badge { position: absolute; left: 4px; bottom: 4px; background: var(--accent); color: #fff; font-size: .72rem; font-weight: 700; border-radius: 999px; padding: 0 .45rem; }
.thumb.clickable { cursor: pointer; }

/* results */
.result-images { display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
.result-images figure { margin: 0; }
.result-images img { width: 100%; border-radius: 10px; display: block; background: var(--surface-2); }
.result-images figcaption { margin-top: 4px; }
.caption-box { white-space: pre-wrap; background: var(--surface-2); border-radius: 10px; padding: 12px; font-size: .95rem; }
video.result-video { width: 100%; max-height: 70vh; border-radius: 12px; background: #000; }

/* style card */
.style-card .colors { display: flex; gap: 6px; }
.style-card .colors span { width: 22px; height: 22px; border-radius: 6px; border: 1px solid var(--line); }
.kv { display: grid; grid-template-columns: 110px 1fr; gap: .3rem .8rem; font-size: .9rem; }
.kv dt { color: var(--muted); } .kv dd { margin: 0; }

/* stats / table */
.stats { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.stat b { display: block; font-size: 1.4rem; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .88rem; }
th, td { text-align: left; padding: .55rem .7rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); background: var(--surface-2); }
tr:last-child td { border-bottom: 0; }
td input[type=number] { width: 80px; padding: .3rem .4rem; }
pre.json { white-space: pre-wrap; word-break: break-word; font-size: .78rem; margin: 0; max-height: 140px; overflow: auto; }

/* quota bar */
.quota { display: flex; gap: 14px; flex-wrap: wrap; font-size: .85rem; color: var(--muted); }
.quota b { color: var(--ink); }

/* modal & toast */
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: flex; align-items: flex-end; justify-content: center; z-index: 50; padding: 0; }
.modal { background: var(--surface); width: 100%; max-width: 560px; max-height: 92vh; overflow: auto; border-radius: 18px 18px 0 0; padding: 20px 16px 24px; }
@media (min-width: 640px) { .modal-bg { align-items: center; padding: 16px; } .modal { border-radius: 18px; } }
.toast {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%); background: var(--ink); color: var(--bg);
  padding: .65rem 1rem; border-radius: 999px; font-size: .9rem; z-index: 60; max-width: calc(100% - 32px); box-shadow: var(--shadow);
}
.toast.err { background: var(--danger); color: #fff; }
.spinner { width: 18px; height: 18px; border-radius: 50%; border: 2px solid currentColor; border-right-color: transparent; animation: spin .8s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-panel { text-align: center; padding: 28px 12px; }
.loading-panel .spinner { width: 34px; height: 34px; border-width: 3px; color: var(--accent); }

.lang-switch { border: 1px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 999px; padding: .25rem .5rem; font: inherit; font-size: .85rem; width: auto; }
.hero { padding: 36px 0 12px; }
.hero h1 { font-size: 2rem; }
.empty { text-align: center; padding: 28px 12px; color: var(--muted); border: 1.5px dashed var(--line); border-radius: var(--radius); }
.divider { height: 1px; background: var(--line); margin: 18px 0; }
.mt { margin-top: 12px; } .mt2 { margin-top: 22px; }
.topbar .row { flex-wrap: nowrap; gap: .3rem; }
@media (max-width: 420px) { .topbar .btn.small { padding: .3rem .55rem; font-size: .8rem; } }
.tag, th { white-space: nowrap; }

.captcha-box { margin: 4px 0 14px; min-height: 0; }
.captcha-box:empty { margin: 0; }

/* ================= 首页（介绍页） ================= */
.home { overflow-x: hidden; }
.home main { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.home-nav .home-links { display: none; gap: 1.2rem; margin-left: 1.2rem; }
.home-nav .home-links a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: .92rem; }
.home-nav .home-links a:hover { color: var(--ink); }
@media (min-width: 760px) { .home-nav .home-links { display: flex; } }

.home-hero { display: grid; gap: 32px; padding: 40px 0 24px; align-items: center; }
@media (min-width: 900px) { .home-hero { grid-template-columns: 1.1fr .9fr; padding: 72px 0 40px; } }
.home-badge {
  display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .02em; color: var(--accent);
  background: var(--accent-soft); border-radius: 999px; padding: .3rem .75rem; margin-bottom: 18px;
}
.home-hero h1 { font-size: clamp(2rem, 6.2vw, 3.3rem); line-height: 1.1; letter-spacing: -.025em; margin-bottom: 18px; }
.home-sub { font-size: 1.08rem; color: var(--muted); max-width: 34em; margin-bottom: 26px; }
.home-cta { padding: .8rem 1.4rem; font-size: 1rem; }

/* 示意手机卡片 */
.home-mock { position: relative; display: flex; justify-content: center; padding: 10px 0 30px; }
.mock-phone {
  width: min(320px, 86vw); background: var(--surface); border: 1px solid var(--line); border-radius: 28px;
  padding: 16px 16px 20px; box-shadow: 0 30px 60px -20px rgba(31,27,22,.28); transform: rotate(-2deg);
}
.mock-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; font-size: .92rem; }
.mock-avatar { width: 32px; height: 32px; border-radius: 50%; background: conic-gradient(from 200deg, #f58529, #dd2a7b, #8134af, #f58529); }
.mock-img {
  position: relative; aspect-ratio: 4 / 5; border-radius: 16px; overflow: hidden;
  background: radial-gradient(120% 90% at 20% 10%, #f7e1c4 0%, #e7b98b 45%, #b9764a 100%);
}
.mock-plate { position: absolute; width: 62%; aspect-ratio: 1; left: 12%; top: 26%; border-radius: 50%;
  background: radial-gradient(circle, #fff7ec 0 52%, #f3dcc0 53% 60%, #fff 61% 100%); box-shadow: 0 18px 30px -12px rgba(80,40,10,.45); }
.mock-plate::after { content: ''; position: absolute; inset: 24%; border-radius: 46% 54% 50% 50%;
  background: radial-gradient(circle at 40% 35%, #f8d79a, #e3a65d 60%, #c27a3a); }
.mock-cup { position: absolute; width: 26%; aspect-ratio: 1; right: 9%; top: 10%; border-radius: 50%;
  background: radial-gradient(circle, #e8c49a 0 45%, #a9683e 46% 56%, #fff 57% 100%); box-shadow: 0 10px 20px -8px rgba(80,40,10,.4); }
.mock-dots { display: flex; justify-content: center; gap: 5px; margin: 10px 0 8px; }
.mock-dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--line); }
.mock-dots i.on { background: var(--accent); }
.mock-caption { font-size: .88rem; margin: 0 0 6px; }
.mock-tags { font-size: .82rem; color: #3b6fd8; margin: 0; }
.mock-chip {
  position: absolute; bottom: 4px; right: max(4%, calc(50% - 190px)); display: flex; align-items: center; gap: 8px;
  background: var(--ink); color: var(--bg); font-size: .82rem; font-weight: 700; border-radius: 999px; padding: .5rem .9rem;
  box-shadow: var(--shadow);
}
.mock-chip .dot { width: 8px; height: 8px; border-radius: 50%; background: #4ade80; }

.home-platforms { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 26px; padding: 18px 0 8px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.home-platforms .pf { font-size: 1.05rem; }

.home-section { padding: 56px 0 8px; }
.home-section > h2, .home-final h2 { font-size: clamp(1.5rem, 4vw, 2.1rem); letter-spacing: -.02em; margin-bottom: 22px; }

.home-steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
@media (min-width: 760px) { .home-steps { grid-template-columns: repeat(3, 1fr); } }
.home-steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.home-steps .num { display: inline-flex; width: 34px; height: 34px; align-items: center; justify-content: center; border-radius: 50%;
  background: var(--accent); color: #fff; font-weight: 800; margin-bottom: 12px; }
.home-steps p, .feat p { color: var(--muted); margin: 0; font-size: .95rem; }

.home-features { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.feat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.feat .ico { font-size: 1.5rem; display: block; margin-bottom: 10px; }

.home-types .chip { cursor: default; }
.home-price { text-align: center; }
.home-price p { max-width: 36em; margin: 0 auto; color: var(--muted); font-size: 1.02rem; }

.home-faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 0 18px; margin-bottom: 10px; }
.home-faq summary { cursor: pointer; font-weight: 700; padding: 16px 0; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.home-faq summary::-webkit-details-marker { display: none; }
.home-faq summary::after { content: '+'; color: var(--accent); font-size: 1.3rem; line-height: 1; }
.home-faq details[open] summary::after { content: '−'; }
.home-faq details p { margin: 0 0 16px; color: var(--muted); }

.home-final { text-align: center; margin: 64px 0 40px; padding: 44px 20px; border-radius: 24px;
  background: linear-gradient(135deg, var(--accent-soft), var(--surface-2)); }
.home-final p { color: var(--muted); margin-bottom: 20px; }
.home-footer { max-width: 1080px; margin: 0 auto; padding: 24px 16px 40px; display: flex; justify-content: space-between; gap: 12px;
  color: var(--muted); font-size: .88rem; border-top: 1px solid var(--line); }
.home-footer a { color: var(--muted); }

/* 隐私政策 / 使用条款 */
.legal-wrap { max-width: 760px; margin: 0 auto; padding: 32px 16px 48px; line-height: 1.65; }
.legal-doc h1 { font-size: 1.9rem; margin: 0 0 6px; }
.legal-doc h2 { font-size: 1.15rem; margin: 30px 0 8px; }
.legal-doc p, .legal-doc li { color: var(--ink); }
.legal-doc ul { padding-left: 1.2em; margin: 8px 0; }
.legal-doc li { margin: 6px 0; }
.legal-doc a { color: var(--accent); word-break: break-word; }
.legal-prevail { margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--line); }
.home-footer .legal-links a { white-space: nowrap; }
@media (max-width: 600px) { .home-footer { flex-direction: column; } }