/* =========================================================
   羽笔 YuBi — 前台样式
   视觉方向：纸张、墨色、朱砂印。期刊排版的克制与留白。
   ========================================================= */

:root {
  --paper: #f6f2e9;
  --paper-2: #fbf9f4;
  --paper-3: #f0eadd;
  --ink: #1e2633;
  --ink-2: #4a5263;
  --ink-3: #8a8f99;
  --line: #e3dccb;
  --line-2: #d6cdb8;
  --accent: #22466b;
  --accent-2: #2f5d8a;
  --accent-soft: rgba(34, 70, 107, .08);
  --seal: #b23a2b;
  --gold: #a8823b;
  --ok: #2f6b4f;
  --warn: #a86b16;
  --err: #a33a2a;
  --ins: rgba(47, 107, 79, .16);
  --del: rgba(163, 58, 42, .14);
  --shadow: 0 1px 2px rgba(30, 38, 51, .04), 0 8px 24px rgba(30, 38, 51, .06);
  --radius: 10px;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Source Han Serif CN", "Songti SC", "STZhongsong", "华文中宋", "STSong", "SimSun", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #14171c; --paper-2: #1b1f26; --paper-3: #222731;
    --ink: #e8e3d7; --ink-2: #b9b4a8; --ink-3: #7f8590;
    --line: #2b313b; --line-2: #3a414d;
    --accent: #8fb3d9; --accent-2: #a9c6e6; --accent-soft: rgba(143, 179, 217, .10);
    --seal: #d0604f; --gold: #c9a35a;
    --ok: #6fb592; --warn: #d9a04a; --err: #e07b6a;
    --ins: rgba(111, 181, 146, .20); --del: rgba(224, 123, 106, .18);
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #14171c; --paper-2: #1b1f26; --paper-3: #222731;
  --ink: #e8e3d7; --ink-2: #b9b4a8; --ink-3: #7f8590;
  --line: #2b313b; --line-2: #3a414d;
  --accent: #8fb3d9; --accent-2: #a9c6e6; --accent-soft: rgba(143, 179, 217, .10);
  --seal: #d0604f; --gold: #c9a35a;
  --ok: #6fb592; --warn: #d9a04a; --err: #e07b6a;
  --ins: rgba(111, 181, 146, .20); --del: rgba(224, 123, 106, .18);
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.7 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }
img { max-width: 100%; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.35; margin: 0 0 .6em; letter-spacing: .02em; }
p { margin: 0 0 1em; }
hr { border: 0; border-top: 1px solid var(--line); margin: 24px 0; }
small, .muted { color: var(--ink-3); }
.serif { font-family: var(--serif); }
.num { font-variant-numeric: tabular-nums; }
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.container-narrow { max-width: 820px; }
.hide { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(10px);
  -webkit-backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .container { display: flex; align-items: center; height: 60px; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-family: var(--serif); font-size: 21px; letter-spacing: .12em; }
.brand:hover { color: var(--ink); }
.brand svg { width: 30px; height: 30px; flex: none; }
.brand .seal {
  font-size: 10px; letter-spacing: 0; line-height: 1; padding: 3px 4px; border: 1px solid var(--seal);
  color: var(--seal); border-radius: 2px; transform: translateY(-6px); font-family: var(--serif);
}
.nav { display: flex; gap: 6px; flex: 1; }
.nav a { color: var(--ink-2); padding: 6px 12px; border-radius: 6px; font-size: 14.5px; }
.nav a:hover, .nav a.active { color: var(--ink); background: var(--accent-soft); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.feather-chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px 4px 8px; border-radius: 999px;
  border: 1px solid var(--line-2); color: var(--ink); font-size: 13.5px; background: var(--paper-2);
}
.feather-chip svg { width: 16px; height: 16px; color: var(--gold); }
.feather-chip:hover { border-color: var(--accent); color: var(--ink); }
.vip-badge {
  display: inline-block; font-size: 11px; line-height: 1; padding: 3px 6px; border-radius: 3px;
  background: linear-gradient(135deg, #b8913f, #8a6a26); color: #fff8e6; letter-spacing: .05em; vertical-align: middle;
}
.menu { position: relative; }
.menu-btn { display: flex; align-items: center; gap: 8px; background: none; border: 0; cursor: pointer; color: var(--ink-2); font: inherit; padding: 4px; }
.avatar {
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent); color: var(--paper-2); font-family: var(--serif); font-size: 14px;
}
.menu-pop {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 200px; padding: 6px;
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  display: none;
}
.menu.open .menu-pop { display: block; }
.menu-pop a, .menu-pop button {
  display: block; width: 100%; text-align: left; padding: 8px 12px; border-radius: 6px; color: var(--ink-2);
  font: inherit; font-size: 14px; background: none; border: 0; cursor: pointer;
}
.menu-pop a:hover, .menu-pop button:hover { background: var(--accent-soft); color: var(--ink); }
.menu-pop .menu-head { padding: 8px 12px 10px; border-bottom: 1px solid var(--line); margin-bottom: 4px; font-size: 13px; color: var(--ink-3); word-break: break-all; }
.nav-toggle { display: none; background: none; border: 0; color: var(--ink); padding: 6px; cursor: pointer; }
.theme-toggle { background: none; border: 0; color: var(--ink-3); cursor: pointer; padding: 6px; border-radius: 6px; display: grid; place-items: center; }
.theme-toggle:hover { color: var(--ink); background: var(--accent-soft); }
.theme-toggle svg { width: 18px; height: 18px; }

/* ---------- 按钮 & 表单 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 38px; padding: 0 18px; border-radius: 8px; border: 1px solid var(--line-2);
  background: var(--paper-2); color: var(--ink); font: inherit; font-size: 14.5px; cursor: pointer;
  transition: background .15s, border-color .15s, color .15s, transform .05s; white-space: nowrap; text-decoration: none;
}
.btn:hover { border-color: var(--ink-3); color: var(--ink); }
.btn:active { transform: translateY(1px); }
.btn:disabled, .btn.disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--paper-2); }
.btn-primary:hover { background: var(--accent-2); border-color: var(--accent-2); color: var(--paper-2); }
.btn-seal { background: var(--seal); border-color: var(--seal); color: #fff; }
.btn-seal:hover { filter: brightness(1.08); color: #fff; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--ink-2); }
.btn-ghost:hover { background: var(--accent-soft); border-color: transparent; }
.btn-sm { height: 30px; padding: 0 12px; font-size: 13px; border-radius: 6px; }
.btn-lg { height: 48px; padding: 0 28px; font-size: 16px; border-radius: 10px; }
.btn-block { width: 100%; }
.btn svg { width: 16px; height: 16px; }

.field { margin-bottom: 16px; }
.field > label, .label { display: block; font-size: 13.5px; color: var(--ink-2); margin-bottom: 6px; }
.input, .select, .textarea {
  width: 100%; height: 42px; padding: 0 12px; border-radius: 8px; border: 1px solid var(--line-2);
  background: var(--paper-2); color: var(--ink); font: inherit; outline: none; transition: border-color .15s, box-shadow .15s;
}
.textarea { height: auto; padding: 10px 12px; resize: vertical; line-height: 1.7; }
.input:focus, .select:focus, .textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.input-group { display: flex; gap: 8px; }
.input-group .input { flex: 1; min-width: 0; }
.check { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; font-size: 14px; color: var(--ink-2); }
.check input { accent-color: var(--accent); width: 16px; height: 16px; }
.help { font-size: 12.5px; color: var(--ink-3); margin-top: 6px; }

/* ---------- 卡片 & 通用 ---------- */
.card {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px;
}
.card-title { font-family: var(--serif); font-size: 17px; margin: 0 0 14px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.card-title small { font-family: var(--sans); font-size: 13px; font-weight: normal; }
.badge { display: inline-block; font-size: 12px; line-height: 1; padding: 4px 8px; border-radius: 4px; background: var(--paper-3); color: var(--ink-2); }
.badge-ok { background: rgba(47, 107, 79, .12); color: var(--ok); }
.badge-warn { background: rgba(168, 107, 22, .12); color: var(--warn); }
.badge-err { background: rgba(163, 58, 42, .12); color: var(--err); }
.badge-accent { background: var(--accent-soft); color: var(--accent); }
.empty { text-align: center; color: var(--ink-3); padding: 48px 12px; font-size: 14px; }
.empty svg { width: 40px; height: 40px; opacity: .5; display: block; margin: 0 auto 10px; }
.notice-bar {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 8px;
  background: var(--accent-soft); color: var(--ink-2); font-size: 14px; border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
}
.notice-bar strong { color: var(--accent); font-weight: 600; }
.notice-bar a { margin-left: auto; white-space: nowrap; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
.table th { color: var(--ink-3); font-weight: normal; font-size: 13px; background: var(--paper-3); }
.table td.wrap { white-space: normal; }
.table tr:hover td { background: color-mix(in srgb, var(--paper-3) 50%, transparent); }
.plus { color: var(--ok); }
.minus { color: var(--err); }

.pager { display: flex; justify-content: center; gap: 6px; margin-top: 18px; flex-wrap: wrap; }
.pager a, .pager span { min-width: 34px; height: 32px; display: grid; place-items: center; padding: 0 10px; border-radius: 6px; border: 1px solid var(--line); color: var(--ink-2); font-size: 13px; }
.pager .cur { background: var(--accent); color: var(--paper-2); border-color: var(--accent); }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); margin-top: 80px; padding: 36px 0 28px; color: var(--ink-3); font-size: 13.5px; }
.footer .container { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: flex-start; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-links a { color: var(--ink-2); }
.footer .beian a { color: var(--ink-3); }
.footer .colophon { font-family: var(--serif); color: var(--ink-2); }

/* ---------- 首页 ---------- */
.hero { padding: 72px 0 56px; }
.hero .container { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; letter-spacing: .18em; color: var(--seal); margin-bottom: 18px; }
.eyebrow::before { content: ""; width: 24px; height: 1px; background: var(--seal); }
.hero h1 { font-size: clamp(34px, 4.6vw, 54px); line-height: 1.22; letter-spacing: .04em; margin-bottom: 22px; }
.hero h1 em { font-style: normal; color: var(--accent); position: relative; }
.hero h1 em::after { content: ""; position: absolute; left: 0; right: 0; bottom: .06em; height: .2em; background: var(--accent-soft); z-index: -1; }
.hero .lead { font-size: 17px; color: var(--ink-2); max-width: 30em; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.hero-note { margin-top: 18px; font-size: 13.5px; color: var(--ink-3); display: flex; gap: 18px; flex-wrap: wrap; }
.hero-note span::before { content: "✓"; color: var(--ok); margin-right: 6px; }

.manuscript {
  position: relative; background: var(--paper-2); border: 1px solid var(--line); border-radius: 4px;
  padding: 34px 34px 28px 58px; box-shadow: var(--shadow); font-family: var(--serif); font-size: 15.5px; line-height: 2;
  background-image: repeating-linear-gradient(to bottom, transparent 0, transparent calc(2em - 1px), var(--line) calc(2em - 1px), var(--line) 2em);
  background-position: 0 30px;
}
.manuscript::before { content: ""; position: absolute; left: 40px; top: 0; bottom: 0; width: 1px; background: color-mix(in srgb, var(--seal) 40%, transparent); }
.manuscript .ms-label { position: absolute; left: 10px; font-family: var(--sans); font-size: 11px; color: var(--ink-3); writing-mode: vertical-rl; letter-spacing: .3em; }
.manuscript .ms-label.l1 { top: 36px; }
.manuscript .ms-label.l2 { top: 50%; }
.manuscript p { margin: 0 0 1em; }
.manuscript del { color: var(--err); text-decoration-color: var(--err); background: var(--del); }
.manuscript ins { color: var(--ok); text-decoration: none; background: var(--ins); border-bottom: 1px solid var(--ok); }
.manuscript .stamp {
  position: absolute; right: 22px; bottom: 18px; width: 64px; height: 64px; border: 2px solid var(--seal); border-radius: 4px;
  color: var(--seal); font-size: 15px; display: grid; place-items: center; text-align: center; line-height: 1.2; transform: rotate(-8deg); opacity: .85;
}
.ms-divider { border: 0; border-top: 1px dashed var(--line-2); margin: 6px 0 14px; }

.section { padding: 64px 0; }
.section-head { text-align: center; max-width: 620px; margin: 0 auto 44px; }
.section-head h2 { font-size: clamp(26px, 3vw, 34px); }
.section-head p { color: var(--ink-2); }
.section-alt { background: var(--paper-3); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; counter-reset: step; }
.step { position: relative; padding: 24px 24px 22px; border-top: 2px solid var(--ink); }
.step::before { counter-increment: step; content: "0" counter(step); font-family: var(--serif); font-size: 13px; color: var(--seal); letter-spacing: .1em; }
.step h3 { margin: 8px 0 6px; font-size: 19px; }
.step p { color: var(--ink-2); margin: 0; font-size: 14.5px; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.feature { background: var(--paper-2); padding: 28px 26px; }
.feature .ico { width: 38px; height: 38px; border-radius: 8px; display: grid; place-items: center; color: var(--accent); background: var(--accent-soft); margin-bottom: 14px; }
.feature .ico svg { width: 20px; height: 20px; }
.feature h3 { font-size: 17px; margin-bottom: 6px; }
.feature p { color: var(--ink-2); font-size: 14px; margin: 0; }

.stats-row { display: flex; justify-content: center; gap: 64px; margin-top: 40px; flex-wrap: wrap; }
.stat-big { text-align: center; }
.stat-big b { display: block; font-family: var(--serif); font-size: 34px; font-weight: 600; color: var(--ink); }
.stat-big span { font-size: 13px; color: var(--ink-3); letter-spacing: .1em; }

/* ---------- 价格 ---------- */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.plan {
  position: relative; background: var(--paper-2); border: 1px solid var(--line); border-radius: 12px; padding: 28px 24px 24px;
  display: flex; flex-direction: column;
}
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow); }
.plan .tag {
  position: absolute; top: -11px; left: 24px; background: var(--seal); color: #fff; font-size: 12px; padding: 3px 10px; border-radius: 3px; letter-spacing: .1em;
}
.plan h3 { font-size: 20px; margin-bottom: 4px; }
.plan .sub { color: var(--ink-3); font-size: 13.5px; }
.price { font-family: var(--serif); margin: 18px 0 4px; display: flex; align-items: baseline; gap: 4px; }
.price .cur { font-size: 18px; color: var(--ink-2); }
.price b { font-size: 40px; font-weight: 600; line-height: 1; }
.price .per { color: var(--ink-3); font-size: 14px; margin-left: 4px; }
.price-note { font-size: 13px; color: var(--ink-3); min-height: 20px; }
.price-note s { margin-right: 6px; }
.perks { list-style: none; padding: 0; margin: 18px 0 22px; flex: 1; }
.perks li { padding: 7px 0 7px 24px; position: relative; font-size: 14.5px; color: var(--ink-2); border-bottom: 1px dashed var(--line); }
.perks li:last-child { border-bottom: 0; }
.perks li::before { content: ""; position: absolute; left: 4px; top: 14px; width: 9px; height: 5px; border-left: 1.5px solid var(--ok); border-bottom: 1.5px solid var(--ok); transform: rotate(-45deg); }
.packs { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
.pack { background: var(--paper-2); border: 1px solid var(--line); border-radius: 10px; padding: 20px; display: flex; flex-direction: column; gap: 6px; position: relative; }
.pack .tag { position: absolute; top: 14px; right: 14px; font-size: 12px; color: var(--seal); border: 1px solid var(--seal); padding: 1px 6px; border-radius: 3px; }
.pack h4 { font-size: 16px; margin: 0; }
.pack .amt { font-family: var(--serif); font-size: 26px; color: var(--ink); }
.pack .amt small { font-size: 13px; color: var(--ink-3); font-family: var(--sans); }
.pack .unit { font-size: 12.5px; color: var(--ink-3); }
.pack .btn { margin-top: 10px; }

.faq { max-width: 780px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 32px 16px 0; font-family: var(--serif); font-size: 16.5px; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font-size: 22px; color: var(--ink-3); font-family: var(--sans); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .ans { padding: 0 0 18px; color: var(--ink-2); font-size: 14.5px; white-space: pre-line; }

.cta-band { text-align: center; padding: 64px 20px; }
.cta-band h2 { font-size: 30px; }

/* ---------- 工作台 ---------- */
.workbench { padding: 22px 0 0; }
.wb-toolbar {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding: 14px 18px; margin: 14px 0;
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius);
}
.level-box { display: flex; align-items: center; gap: 14px; flex: 1; min-width: 300px; }
.level-box .lbl { font-size: 13.5px; color: var(--ink-2); white-space: nowrap; }
.level-slider { flex: 1; display: flex; flex-direction: column; gap: 2px; min-width: 160px; max-width: 360px; }
.level-slider input[type=range] { width: 100%; accent-color: var(--accent); }
.level-ticks { display: flex; justify-content: space-between; font-size: 11px; color: var(--ink-3); padding: 0 2px; }
.level-val { min-width: 112px; }
.level-val b { font-family: var(--serif); font-size: 22px; color: var(--accent); margin-right: 4px; }
.level-val span { font-size: 13px; color: var(--ink-2); }
.presets { display: flex; gap: 6px; }
.chip { height: 28px; padding: 0 12px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent; color: var(--ink-2); font: inherit; font-size: 13px; cursor: pointer; }
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.on { background: var(--accent); border-color: var(--accent); color: var(--paper-2); }
.wb-meta { display: flex; gap: 18px; align-items: center; font-size: 13.5px; color: var(--ink-2); margin-left: auto; flex-wrap: wrap; }
.wb-meta b { color: var(--ink); font-weight: 600; }
.wb-meta .over { color: var(--err); }

.panes { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.pane { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); display: flex; flex-direction: column; min-height: 560px; overflow: hidden; }
.pane-head { display: flex; align-items: center; gap: 8px; padding: 10px 12px 10px 18px; border-bottom: 1px solid var(--line); min-height: 52px; }
.pane-head h3 { font-size: 15.5px; margin: 0; letter-spacing: .1em; }
.pane-head .sp { flex: 1; }
.pane-body { position: relative; flex: 1; display: flex; }
.editor, .result {
  flex: 1; width: 100%; border: 0; outline: none; resize: none; background: transparent; color: var(--ink);
  padding: 18px 22px; font-family: var(--serif); font-size: 16px; line-height: 1.95; min-height: 480px;
}
.editor::placeholder { color: var(--ink-3); }
.result { overflow-y: auto; white-space: pre-wrap; word-break: break-word; max-height: 72vh; }
.result:empty::before { content: attr(data-empty); color: var(--ink-3); }
.result ins { text-decoration: none; background: var(--ins); color: inherit; border-radius: 2px; }
.result del { background: var(--del); color: var(--err); text-decoration-color: var(--err); border-radius: 2px; }
.result .cursor { display: inline-block; width: 2px; height: 1.1em; background: var(--accent); vertical-align: -2px; animation: blink 1s steps(2) infinite; margin-left: 1px; }
@keyframes blink { 50% { opacity: 0; } }
.pane-foot { display: flex; align-items: center; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.pane-foot .sp { flex: 1; }
.counter { font-size: 12.5px; color: var(--ink-3); }
.tabs-mini { display: inline-flex; border: 1px solid var(--line-2); border-radius: 7px; overflow: hidden; }
.tabs-mini button { background: transparent; border: 0; padding: 4px 12px; font: inherit; font-size: 13px; color: var(--ink-2); cursor: pointer; }
.tabs-mini button.on { background: var(--accent); color: var(--paper-2); }
.icon-btn { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 6px; border: 0; background: transparent; color: var(--ink-2); cursor: pointer; }
.icon-btn:hover { background: var(--accent-soft); color: var(--ink); }
.icon-btn svg { width: 17px; height: 17px; }
.run-row { display: flex; justify-content: center; gap: 12px; margin: 22px 0 6px; align-items: center; flex-wrap: wrap; }
.run-row .btn-lg { min-width: 220px; }
.progress { height: 3px; background: var(--line); border-radius: 3px; overflow: hidden; }
.progress i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .4s; }
.progress.indeterminate i { width: 30%; animation: indet 1.2s ease-in-out infinite; }
@keyframes indet { 0% { transform: translateX(-100%); } 100% { transform: translateX(400%); } }
.status-line { font-size: 13px; color: var(--ink-3); text-align: center; min-height: 20px; }
.drop-hint {
  position: absolute; inset: 8px; border: 2px dashed var(--accent); border-radius: 8px; display: none; place-items: center;
  background: color-mix(in srgb, var(--paper-2) 90%, transparent); color: var(--accent); font-family: var(--serif); font-size: 18px; z-index: 3;
}
.pane.dragover .drop-hint { display: grid; }
.diff-legend { font-size: 12px; color: var(--ink-3); display: flex; gap: 12px; }
.diff-legend ins, .diff-legend del { padding: 0 4px; border-radius: 2px; text-decoration: none; }
.diff-legend ins { background: var(--ins); }
.diff-legend del { background: var(--del); text-decoration: line-through; }
.result-stats { font-size: 12.5px; color: var(--ink-3); }

/* 历史抽屉 */
.drawer-mask { position: fixed; inset: 0; background: rgba(20, 23, 28, .35); z-index: 80; display: none; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(420px, 92vw); background: var(--paper-2); border-left: 1px solid var(--line); z-index: 81; transform: translateX(100%); transition: transform .25s; display: flex; flex-direction: column; }
.drawer.open { transform: none; }
.drawer.open + .drawer-mask, .drawer-mask.open { display: block; }
.drawer-head { display: flex; align-items: center; gap: 10px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.drawer-head h3 { margin: 0; flex: 1; font-size: 17px; }
.drawer-body { flex: 1; overflow-y: auto; padding: 8px 10px; }
.hist-item { padding: 12px 10px; border-bottom: 1px solid var(--line); cursor: pointer; border-radius: 6px; }
.hist-item:hover { background: var(--accent-soft); }
.hist-item .t { font-family: var(--serif); font-size: 14.5px; color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hist-item .m { font-size: 12px; color: var(--ink-3); display: flex; gap: 10px; margin-top: 3px; }

/* ---------- 弹窗 & 提示 ---------- */
.modal-mask { position: fixed; inset: 0; background: rgba(20, 23, 28, .45); z-index: 100; display: none; align-items: center; justify-content: center; padding: 16px; }
.modal-mask.open { display: flex; }
.modal { background: var(--paper-2); border-radius: 14px; border: 1px solid var(--line); width: 100%; max-width: 420px; box-shadow: 0 20px 60px rgba(0, 0, 0, .2); overflow: hidden; }
.modal-head { padding: 18px 22px 0; display: flex; align-items: center; }
.modal-head h3 { margin: 0; flex: 1; font-size: 18px; }
.modal-body { padding: 18px 22px 22px; }
.modal-close { background: none; border: 0; font-size: 22px; color: var(--ink-3); cursor: pointer; line-height: 1; }
.toast-wrap { position: fixed; top: 76px; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
.toast {
  background: var(--ink); color: var(--paper); padding: 10px 18px; border-radius: 8px; font-size: 14px; box-shadow: var(--shadow);
  animation: toastIn .2s ease-out; max-width: 90vw;
}
.toast.err { background: var(--err); color: #fff; }
.toast.ok { background: var(--ok); color: #fff; }
@keyframes toastIn { from { opacity: 0; transform: translateY(-6px); } }

/* ---------- 登录 ---------- */
.auth-wrap { min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr; }
.auth-side {
  position: relative; background: var(--paper-3); border-right: 1px solid var(--line); padding: 48px; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden;
}
.auth-side::after {
  content: ""; position: absolute; right: -80px; bottom: -60px; width: 380px; height: 380px; opacity: .07;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Cpath d='M54 6C34 8 18 22 12 46l-4 12 3 1 4-11c10 0 22-4 30-14l-8 1 10-6c4-6 6-14 7-23z' fill='%2322466b'/%3E%3C/svg%3E") no-repeat center/contain;
}
.auth-quote { font-family: var(--serif); font-size: 26px; line-height: 1.7; max-width: 15em; color: var(--ink); }
.auth-quote cite { display: block; font-size: 14px; color: var(--ink-3); font-style: normal; margin-top: 14px; letter-spacing: .1em; }
.auth-main { display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.auth-box { width: 100%; max-width: 380px; }
.auth-box h1 { font-size: 26px; margin-bottom: 6px; }
.auth-box .sub { color: var(--ink-3); margin-bottom: 28px; font-size: 14px; }
.auth-tabs { display: flex; gap: 22px; border-bottom: 1px solid var(--line); margin-bottom: 22px; }
.auth-tabs button { background: none; border: 0; padding: 0 0 10px; font: inherit; color: var(--ink-3); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.auth-tabs button.on { color: var(--ink); border-color: var(--ink); }
.captcha-img { height: 42px; border-radius: 8px; border: 1px solid var(--line-2); cursor: pointer; background: #f7f4ec; }
.auth-foot { font-size: 12.5px; color: var(--ink-3); margin-top: 18px; line-height: 1.8; }

/* ---------- 用户中心 ---------- */
.uc { display: grid; grid-template-columns: 220px 1fr; gap: 28px; padding-top: 32px; align-items: start; }
.uc-nav { position: sticky; top: 84px; display: flex; flex-direction: column; gap: 2px; }
.uc-nav .who { padding: 4px 12px 16px; margin-bottom: 8px; border-bottom: 1px solid var(--line); }
.uc-nav .who b { display: block; font-family: var(--serif); font-size: 17px; }
.uc-nav .who span { font-size: 12.5px; color: var(--ink-3); word-break: break-all; }
.uc-nav a { padding: 9px 12px; border-radius: 7px; color: var(--ink-2); font-size: 14.5px; display: flex; align-items: center; gap: 10px; }
.uc-nav a svg { width: 17px; height: 17px; opacity: .8; }
.uc-nav a:hover { background: var(--accent-soft); color: var(--ink); }
.uc-nav a.on { background: var(--paper-2); border: 1px solid var(--line); color: var(--ink); }
.uc-main h1 { font-size: 24px; margin-bottom: 20px; }
.grid { display: grid; gap: 18px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.stat { padding: 20px 22px; }
.stat .k { font-size: 13px; color: var(--ink-3); display: flex; align-items: center; gap: 6px; }
.stat .v { font-family: var(--serif); font-size: 30px; font-weight: 600; margin: 4px 0 2px; color: var(--ink); }
.stat .d { font-size: 12.5px; color: var(--ink-3); }
.stat-feather .v { color: var(--accent); }
.checkin-box { display: flex; align-items: center; gap: 16px; }
.checkin-box .ic { width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); flex: none; }
.checkin-box .ic svg { width: 22px; height: 22px; }
.invite-link { display: flex; gap: 8px; }
.invite-link .input { font-family: var(--mono); font-size: 13px; }

/* ---------- 支付 ---------- */
.checkout { max-width: 640px; margin: 40px auto 0; }
.order-sum { display: flex; justify-content: space-between; align-items: baseline; padding: 18px 0; border-bottom: 1px dashed var(--line-2); }
.order-sum .amt { font-family: var(--serif); font-size: 32px; color: var(--seal); }
.methods { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin: 20px 0; }
.method { position: relative; display: flex; align-items: center; gap: 10px; padding: 14px 16px; border: 1px solid var(--line-2); border-radius: 10px; cursor: pointer; background: var(--paper-2); }
.method input { position: absolute; opacity: 0; }
.method:has(input:checked) { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.method svg { width: 26px; height: 26px; flex: none; }
.method .tip { font-size: 11.5px; color: var(--ink-3); margin-left: auto; }
.qr-box { text-align: center; }
.qr-box .qr { width: 220px; height: 220px; margin: 6px auto 12px; padding: 10px; background: #fff; border-radius: 8px; border: 1px solid var(--line); display: grid; place-items: center; }
.qr-box .qr img, .qr-box .qr canvas, .qr-box .qr svg { width: 100%; height: 100%; }
.qr-box .amt { font-family: var(--serif); font-size: 26px; color: var(--seal); }
.result-card { text-align: center; padding: 48px 24px; }
.result-card .big-ic { width: 64px; height: 64px; border-radius: 50%; margin: 0 auto 16px; display: grid; place-items: center; }
.result-card .big-ic svg { width: 32px; height: 32px; }
.result-card .ok { background: rgba(47, 107, 79, .12); color: var(--ok); }
.result-card .wait { background: rgba(168, 107, 22, .12); color: var(--warn); }

/* ---------- 文章页 ---------- */
.article { max-width: 760px; margin: 48px auto 0; }
.article h1 { font-size: 32px; margin-bottom: 8px; }
.article .meta { color: var(--ink-3); font-size: 13px; margin-bottom: 28px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.prose { font-family: var(--serif); font-size: 16.5px; line-height: 2; }
.prose h2 { font-size: 22px; margin-top: 1.6em; }
.prose h3 { font-size: 18px; margin-top: 1.4em; }
.prose p { margin: 0 0 1.1em; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose blockquote { margin: 1em 0; padding: 4px 18px; border-left: 3px solid var(--line-2); color: var(--ink-2); }

.err-page { text-align: center; padding: 100px 20px; }
.err-page .code { font-family: var(--serif); font-size: 84px; color: var(--line-2); line-height: 1; margin-bottom: 18px; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 44px 0 32px; }
  .features { grid-template-columns: 1fr 1fr; }
  .panes { grid-template-columns: 1fr; }
  .pane { min-height: 340px; }
  .editor, .result { min-height: 280px; }
  .uc { grid-template-columns: 1fr; padding-top: 18px; }
  .uc-nav { position: static; flex-direction: row; overflow-x: auto; gap: 4px; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
  .uc-nav .who { display: none; }
  .uc-nav a { white-space: nowrap; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 14.5px; }
  .container { padding: 0 16px; }
  .topbar .container { gap: 12px; }
  .nav { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; background: var(--paper-2); border-bottom: 1px solid var(--line); padding: 8px 16px 14px; }
  .nav.open { display: flex; }
  .nav-toggle { display: grid; }
  .nav-right { margin-left: auto; }
  .feather-chip .lbl { display: none; }
  .steps, .features { grid-template-columns: 1fr; }
  .auth-wrap { grid-template-columns: 1fr; }
  .auth-side { display: none; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .manuscript { padding: 24px 18px 24px 44px; font-size: 14.5px; }
  .manuscript::before { left: 30px; }
  .manuscript .ms-label { left: 4px; }
  .wb-toolbar { padding: 12px; gap: 12px; }
  .level-box { min-width: 100%; flex-wrap: wrap; }
  .wb-meta { margin-left: 0; }
  .stats-row { gap: 32px; }
  .section { padding: 44px 0; }
  .footer .container { flex-direction: column; }
}

/* 内联图标尺寸兜底 */
.notice-bar svg, .stat .k svg, .card-title svg, .help svg { width: 18px; height: 18px; flex: none; }
.stat .k svg { width: 15px; height: 15px; }
.hero-cta .btn svg { width: 18px; height: 18px; }
.nav-toggle svg { width: 22px; height: 22px; }