/* SelfAI 官网 · 参照 Profound 的版式
   纯黑底；内容在一根居中的"框"里，左右两条竖线贯穿全页，区块之间用通栏横线分隔。
   字重 500 而不是粗体，字距收紧；正文灰、标题近白。唯一的彩色是三家 AI 的标识色和"提到"的绿色。 */
:root {
  --bg: #000;
  --bg-1: #08090a;
  --bg-2: #0e1012;
  --bg-3: #15171a;
  --line: #1c1f23;
  --line-2: #2a2e33;
  --fg: #edf2f5;
  --fg-2: #a3a9b0;
  --fg-3: #6b7178;
  --hit: #34d399;
  --hit-bg: rgba(52, 211, 153, .12);
  --miss: #f87171;
  --qwen: #8b7cf6;
  --doubao: #4c8dff;
  --kimi: #d9dde1;
  --sans: "Inter", "InterVariable", -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --frame: 1200px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--fg); font-family: var(--sans); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--fg); outline-offset: 2px; }
h1, h2, h3 { margin: 0; font-weight: 500; text-wrap: balance; }
p { margin: 0; }

/* 框：左右两条竖线 */
.frame { max-width: var(--frame); margin: 0 auto; border-left: 1px solid var(--line); border-right: 1px solid var(--line); position: relative; }
.pad { padding-left: max(24px, env(safe-area-inset-left, 0px)); padding-right: max(24px, env(safe-area-inset-right, 0px)); }
.rule { border-top: 1px solid var(--line); }
@media (max-width: 1240px) { .frame { border-left: 0; border-right: 0; } }

/* 公告条 + 导航 */
.announce { border-bottom: 1px solid var(--line); text-align: center; font-size: 13px; color: var(--fg-2); padding: 9px 16px; }
.announce b { color: var(--fg); font-weight: 500; margin-right: 10px; padding: 2px 8px; border-radius: 6px; background: var(--bg-3); border: 1px solid var(--line-2); }
.announce a::after { content: " →"; }
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: rgba(0, 0, 0, .78); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 21; background: var(--bg); }
.top .frame { border-color: transparent; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: 56px; }
.logo { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 16px; letter-spacing: -0.01em; }
.logo svg { width: 18px; height: 18px; }
.menu { display: flex; gap: 28px; font-size: 14px; color: var(--fg-2); }
.menu a:hover, .menu a[aria-current="page"] { color: var(--fg); }
.right { display: flex; justify-content: flex-end; align-items: center; gap: 16px; font-size: 14px; }
.right .muted { color: var(--fg-2); }
@media (max-width: 820px) { .menu, .right .muted { display: none; } .top .frame { grid-template-columns: 1fr auto; } }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; font: inherit; font-size: 14px; font-weight: 500; letter-spacing: .1px; border-radius: 8px; padding: 7px 14px; cursor: pointer; border: 1px solid transparent; white-space: nowrap; }
.btn.white { background: #fff; color: #222; }
.btn.white:hover { background: #e6e9eb; }
.btn.dark { background: var(--bg-3); color: var(--fg); border-color: var(--line-2); }
.btn.dark:hover { border-color: #3a3f45; }
.btn.lg { font-size: 15px; padding: 10px 18px; }
.btn[disabled] { opacity: .5; cursor: wait; }

/* 首屏 */
.hero { text-align: center; padding-block: 96px 56px; }
.hero h1 { font-size: clamp(34px, 4.6vw, 56px); line-height: 1.16; letter-spacing: -0.025em; color: var(--fg); }
.rot { display: inline-flex; align-items: center; gap: .22em; margin: 0 .12em; }
.rot i { width: .42em; height: .42em; border-radius: 50%; display: inline-block; transition: background .4s; }
.rot span { display: inline-block; transition: opacity .35s, transform .35s; }
.rot.out span { opacity: 0; transform: translateY(.25em); }
.hero .sub { font-size: clamp(15px, 1.4vw, 18px); color: var(--fg-2); max-width: 36em; margin: 22px auto 0; line-height: 1.65; }
.hero .actions { display: flex; gap: 10px; justify-content: center; margin-top: 30px; flex-wrap: wrap; }
@media (max-width: 640px) { .hero { padding-block: 64px 40px; } }

/* 产品界面 */
.app { margin: 0 24px 0; border: 1px solid var(--line-2); border-radius: 12px 12px 0 0; border-bottom: 0; background: var(--bg-1); overflow: hidden; display: grid; grid-template-columns: 220px minmax(0, 1fr); min-height: 560px; text-align: left; }
@media (max-width: 900px) { .app { grid-template-columns: minmax(0, 1fr); margin: 0 12px; } .side { display: none; } }
.side { border-right: 1px solid var(--line); padding: 14px 10px; display: grid; align-content: start; gap: 2px; font-size: 13px; color: var(--fg-2); }
.side .ws { display: flex; align-items: center; gap: 8px; padding: 6px 8px 12px; color: var(--fg); font-weight: 500; }
.side .ws em { font-style: normal; width: 22px; height: 22px; border-radius: 6px; background: var(--bg-3); border: 1px solid var(--line-2); display: grid; place-items: center; font-size: 11px; }
.side .grp { font-size: 11px; color: var(--fg-3); padding: 12px 8px 4px; letter-spacing: .04em; }
.side a { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 6px; }
.side a i { width: 14px; height: 14px; border-radius: 4px; border: 1px solid var(--line-2); display: inline-block; }
.side a.on { background: var(--bg-3); color: var(--fg); }
.main { padding: 18px 22px 22px; display: grid; gap: 16px; align-content: start; min-width: 0; }
.main-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.main-head h3 { font-size: 15px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { font-size: 12px; color: var(--fg-2); border: 1px solid var(--line-2); border-radius: 6px; padding: 2px 8px; background: var(--bg-2); }
.metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 640px) { .metrics { grid-template-columns: minmax(0, 1fr); } }
.metric { border: 1px solid var(--line); border-radius: 10px; background: var(--bg-2); padding: 12px 14px; display: grid; gap: 6px; }
.metric .lab { font-size: 12px; color: var(--fg-2); display: flex; align-items: center; gap: 6px; }
.metric .val { font-size: 26px; font-weight: 500; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.metric .val small { font-size: 12px; color: var(--fg-3); margin-left: 6px; letter-spacing: 0; }
.metric .trk { height: 4px; border-radius: 3px; background: var(--bg-3); overflow: hidden; }
.metric .trk b { display: block; height: 100%; border-radius: 3px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex: none; }
.dot.qwen { background: var(--qwen); } .dot.doubao { background: var(--doubao); } .dot.kimi { background: var(--kimi); }
.panels { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); gap: 10px; }
@media (max-width: 1000px) { .panels { grid-template-columns: minmax(0, 1fr); } }
.pnl { border: 1px solid var(--line); border-radius: 10px; background: var(--bg-2); min-width: 0; overflow: hidden; }
.pnl-h { display: flex; justify-content: space-between; align-items: center; padding: 9px 12px; border-bottom: 1px solid var(--line); font-size: 12px; color: var(--fg-2); }
.pnl-h b { color: var(--fg); font-weight: 500; }
.ask { padding: 10px 12px; border-bottom: 1px solid var(--line); font-size: 13px; display: flex; gap: 8px; align-items: baseline; }
.ask .who { color: var(--fg-3); font-size: 11px; white-space: nowrap; }
.caret { display: inline-block; width: 2px; height: 1em; background: var(--fg); vertical-align: -2px; margin-left: 2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 640px) { .cols { grid-template-columns: minmax(0, 1fr); } }
.col { border-right: 1px solid var(--line); min-width: 0; display: grid; grid-template-rows: auto 1fr auto; }
.col:last-child { border-right: 0; }
@media (max-width: 640px) { .col { border-right: 0; border-bottom: 1px solid var(--line); } }
.col-h { display: flex; justify-content: space-between; align-items: center; padding: 8px 12px; font-size: 12px; border-bottom: 1px solid var(--line); }
.col-h b { font-weight: 500; display: inline-flex; align-items: center; gap: 6px; }
.state { color: var(--fg-3); font-family: var(--mono); font-size: 11px; }
.col-b { padding: 10px 12px; font-size: 12.5px; color: var(--fg-2); line-height: 1.7; min-height: 156px; }
.col-b mark { background: var(--hit-bg); color: var(--hit); border-radius: 3px; padding: 0 3px; font-weight: 500; }
.col-f { padding: 7px 12px; border-top: 1px solid var(--line); font-size: 11px; color: var(--fg-3); display: flex; justify-content: space-between; }
.vd { font-weight: 500; opacity: 0; transition: opacity .3s; }
.vd.on { opacity: 1; }
.vd.yes { color: var(--hit); } .vd.no { color: var(--miss); }
.src { list-style: none; margin: 0; padding: 4px 0; font-size: 12.5px; }
.src li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; padding: 7px 12px; color: var(--fg-2); }
.src li b { font-weight: 400; color: var(--fg); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.src li span { font-family: var(--mono); font-size: 11.5px; }
.src .bar { grid-column: 1 / -1; height: 3px; background: var(--bg-3); border-radius: 2px; overflow: hidden; }
.src .bar i { display: block; height: 100%; background: var(--fg-3); }
.fade-b { height: 80px; margin-top: -80px; position: relative; background: linear-gradient(transparent, var(--bg)); pointer-events: none; }

/* 覆盖的 AI：格子 */
.cells { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--line); }
@media (max-width: 720px) { .cells { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.cells div { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); height: 92px; display: grid; place-items: center; text-align: center; font-size: 17px; font-weight: 500; color: var(--fg-2); gap: 0; }
.cells div:last-child { border-right: 0; }
.cells small { display: block; font-size: 11px; color: var(--fg-3); font-weight: 400; }

/* 滚动点亮的大句子 */
.reveal { padding-block: 140px; text-align: center; }
.reveal p { font-size: clamp(28px, 4vw, 52px); line-height: 1.22; letter-spacing: -0.025em; font-weight: 500; max-width: 15em; margin: 0 auto; }
.reveal p span { color: #2c3035; transition: color .25s; }
.reveal p span.lit { color: var(--fg); }
@media (prefers-reduced-motion: reduce) { .reveal p span { color: var(--fg); } }

/* 区块标题（左对齐，像 Profound 的 "Your AI Marketer makes it possible"） */
.block { padding-block: 96px; }
.block-h h2 { font-size: clamp(30px, 4.2vw, 54px); line-height: 1.08; letter-spacing: -0.035em; color: #d1d1d1; max-width: 12em; }
.block-h p { color: var(--fg-2); margin-top: 16px; max-width: 34em; font-size: 17px; }

/* 功能页签 */
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 36px; }
.tab { font: inherit; font-size: 13.5px; color: var(--fg-2); background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 999px; padding: 6px 14px; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.tab[aria-selected="true"] { background: #fff; color: #111; border-color: #fff; }
.tabpanel { margin-top: 20px; display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--bg-1); }
@media (max-width: 900px) { .tabpanel { grid-template-columns: minmax(0, 1fr); } }
.tabpanel .txt { padding: 32px; display: grid; gap: 14px; align-content: start; border-right: 1px solid var(--line); }
@media (max-width: 900px) { .tabpanel .txt { border-right: 0; border-bottom: 1px solid var(--line); } }
.tabpanel h3 { font-size: 22px; letter-spacing: -0.02em; }
.tabpanel .txt p { color: var(--fg-2); }
.tabpanel .txt ul { margin: 6px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.tabpanel .txt li { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 8px; color: var(--fg-2); font-size: 14.5px; }
.tabpanel .txt li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--fg-3); margin-top: 9px; }
.tabpanel .vis { padding: 24px; background: radial-gradient(ellipse at 70% 0%, rgba(255,255,255,.04), transparent 60%); display: grid; align-content: center; min-width: 0; }

/* 方法与数字 */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-top: 48px; }
@media (max-width: 820px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.stat { padding: 28px 24px; border-right: 1px solid var(--line); display: grid; gap: 6px; }
.stat:last-child { border-right: 0; }
@media (max-width: 820px) { .stat:nth-child(2n) { border-right: 0; } .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); } }
.stat b { font-size: clamp(30px, 3.6vw, 44px); font-weight: 500; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.stat span { font-size: 13.5px; color: var(--fg-2); }

/* 原则格子 */
.grid4 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); margin-top: 48px; }
@media (max-width: 720px) { .grid4 { grid-template-columns: minmax(0, 1fr); } }
.grid4 > div { padding: 32px 24px; border-bottom: 1px solid var(--line); display: grid; gap: 8px; align-content: start; }
.grid4 > div:nth-child(odd) { border-right: 1px solid var(--line); }
@media (max-width: 720px) { .grid4 > div:nth-child(odd) { border-right: 0; } }
.grid4 h3 { font-size: 18px; letter-spacing: -0.01em; }
.grid4 p { color: var(--fg-2); font-size: 14.5px; }

/* 收尾 */
.final { text-align: center; padding-block: 120px; background: radial-gradient(ellipse 60% 70% at 50% 100%, rgba(255,255,255,.05), transparent 70%); }
.final h2 { font-size: clamp(32px, 4.6vw, 56px); letter-spacing: -0.035em; line-height: 1.1; }
.final p { color: var(--fg-2); margin-top: 16px; }
.final .actions { display: flex; gap: 10px; justify-content: center; margin-top: 28px; flex-wrap: wrap; }

footer .frame { display: grid; grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr)); gap: 24px; padding-block: 48px 64px; font-size: 13.5px; }
@media (max-width: 720px) { footer .frame { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
footer h4 { margin: 0 0 12px; font-size: 13px; font-weight: 500; color: var(--fg); }
footer a, footer p { display: block; color: var(--fg-3); margin-bottom: 8px; }
footer a:hover { color: var(--fg); }

/* ---------- 内页：抬头 + 表单 + 服务 + 结果 ---------- */
.page-h { text-align: center; padding-block: 80px 40px; }
.page-h .eyebrow { font-size: 13px; color: var(--fg-2); }
.page-h h1 { font-size: clamp(32px, 4.4vw, 52px); letter-spacing: -0.03em; line-height: 1.12; margin-top: 12px; }
.page-h p { color: var(--fg-2); max-width: 34em; margin: 16px auto 0; font-size: 16px; }
.form { max-width: 620px; margin: 0 auto 96px; border: 1px solid var(--line-2); background: var(--bg-1); border-radius: 12px; padding: 28px; display: grid; gap: 20px; }
@media (max-width: 640px) { .form { padding: 20px; margin-inline: 0; } }
.field { display: grid; gap: 7px; }
.field > label, .field > .label { font-size: 13.5px; font-weight: 500; }
.field .hint { font-size: 12.5px; color: var(--fg-3); }
.field input[type=text], .field input[type=url], .field textarea { font: inherit; font-size: 15px; color: var(--fg); background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 8px; padding: 10px 12px; width: 100%; }
.field input::placeholder, .field textarea::placeholder { color: var(--fg-3); }
.field input:focus, .field textarea:focus { outline: none; border-color: #4a5058; box-shadow: 0 0 0 3px rgba(255,255,255,.05); }
.field textarea { min-height: 140px; resize: vertical; }
.seg { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
@media (max-width: 520px) { .seg { grid-template-columns: minmax(0, 1fr); } }
.seg label { position: relative; cursor: pointer; }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg span { display: grid; gap: 2px; border: 1px solid var(--line-2); background: var(--bg-2); border-radius: 9px; padding: 10px 12px; }
.seg b { font-size: 14.5px; font-weight: 500; display: inline-flex; align-items: center; gap: 7px; }
.seg small { font-size: 12px; color: var(--fg-3); }
.seg input:checked + span { border-color: var(--fg); background: var(--bg-3); }
.seg input:focus-visible + span { outline: 2px solid var(--fg); outline-offset: 2px; }
.callout { font-size: 13px; color: var(--fg-2); border: 1px solid var(--line); background: var(--bg-2); border-radius: 9px; padding: 12px 14px; display: grid; gap: 4px; }
.callout b { color: var(--fg); font-weight: 500; }
.callout a, .faq a { text-decoration: underline; text-underline-offset: 3px; }
.submit { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.err { color: var(--miss); font-size: 14px; }
.linkish { font: inherit; font-size: 13px; background: none; border: 0; padding: 0; color: var(--fg-2); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; justify-self: start; }

.plans { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); }
@media (max-width: 760px) { .plans { grid-template-columns: minmax(0, 1fr); } }
.plan { padding: 36px 24px; border-bottom: 1px solid var(--line); display: grid; gap: 12px; align-content: start; }
.plan:nth-child(odd) { border-right: 1px solid var(--line); }
@media (max-width: 760px) { .plan:nth-child(odd) { border-right: 0; } }
.plan .who { font-size: 12.5px; color: var(--fg-3); }
.plan h3 { font-size: 24px; letter-spacing: -0.02em; }
.plan p { color: var(--fg-2); }
.plan ul { margin: 4px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.plan li { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 8px; color: var(--fg-2); font-size: 14.5px; }
.plan li::before { content: "✓"; color: var(--fg); font-size: 12px; margin-top: 2px; }

.faq { display: grid; border-top: 1px solid var(--line); }
.faq div { padding: 22px 24px; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 24px; }
@media (max-width: 720px) { .faq div { grid-template-columns: minmax(0, 1fr); gap: 6px; } }
.faq dt { font-weight: 500; }
.faq dd { margin: 0; color: var(--fg-2); }

.doc-shell { padding-block: 0 96px; }
.paper-wrap { max-width: 860px; margin: 0 auto; }
.after { max-width: 860px; margin: 22px auto 0; display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.waiting { max-width: 620px; margin: 0 auto; border: 1px solid var(--line-2); background: var(--bg-1); border-radius: 12px; padding: 28px; display: grid; gap: 12px; text-align: center; color: var(--fg-2); }
.bar { height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; }
.bar i { display: block; height: 100%; width: 28%; background: var(--fg); animation: run 1.5s ease-in-out infinite; }
@keyframes run { from { transform: translateX(-100%); } to { transform: translateX(360%); } }
.waiting .small { font-size: 12.5px; color: var(--fg-3); }

@media (prefers-reduced-motion: reduce) { .caret { animation: none; } .bar i { animation: none; width: 100%; opacity: .4; } .rot span, .rot i { transition: none; } }

@media (max-width: 900px) { .app .side { display: none; } }

/* ---------- 第三版：导航下拉、手机菜单、页脚、内容页通用组件 ---------- */
.dd { position: relative; }
.dd-btn { font: inherit; font-size: 14px; color: var(--fg-2); background: none; border: 0; padding: 0; cursor: pointer; display: inline-flex; align-items: center; gap: 5px; }
.dd-btn svg { width: 9px; height: 6px; transition: transform .2s; }
.dd-btn[aria-expanded="true"] svg { transform: rotate(180deg); }
.dd-btn:hover, .dd-btn.on, .dd-btn[aria-expanded="true"] { color: var(--fg); }
.dd-panel { position: absolute; top: calc(100% + 16px); left: 50%; transform: translateX(-50%); width: 320px; background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 12px; padding: 6px; display: grid; gap: 2px; box-shadow: 0 20px 50px -10px rgba(0,0,0,.8); z-index: 30; }
.dd-panel a { display: grid; gap: 2px; padding: 10px 12px; border-radius: 8px; }
.dd-panel a:hover, .dd-panel a[aria-current="page"] { background: var(--bg-3); }
.dd-panel b { font-weight: 500; color: var(--fg); font-size: 14px; }
.dd-panel span { color: var(--fg-3); font-size: 12.5px; }
.mbtn { display: none; width: 36px; height: 32px; border: 1px solid var(--line-2); background: var(--bg-2); border-radius: 8px; cursor: pointer; padding: 0; place-items: center; align-content: center; gap: 5px; }
.mbtn i { display: block; width: 14px; height: 1.5px; background: var(--fg); margin: 0 auto; transition: transform .2s; }
.mbtn.on i:first-child { transform: translateY(3.25px) rotate(45deg); } .mbtn.on i:last-child { transform: translateY(-3.25px) rotate(-45deg); }
.mnav { border-top: 1px solid var(--line); background: var(--bg); padding: 8px max(24px, env(safe-area-inset-left, 0px)) 16px; display: grid; }
.mnav a { padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--fg); font-size: 15px; }
@media (max-width: 820px) { .mbtn { display: grid; } .right .btn.white { display: none; } }
@media (min-width: 821px) { .mnav { display: none !important; } }

.foot-grid { display: grid; grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr)); gap: 24px; padding-block: 48px 32px; font-size: 13.5px; }
@media (max-width: 720px) { .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.foot-grid .logo { margin-bottom: 12px; color: var(--fg); }
.foot-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-block: 16px 32px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--fg-3); }
footer .frame.foot-grid, footer .frame.foot-bottom { display: grid; }
footer .frame.foot-bottom { display: flex; }

/* 内容页通用 */
.lead-in { max-width: 760px; }
.split { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 48px; align-items: center; padding-block: 72px; border-top: 1px solid var(--line); }
.split.flip > :first-child { order: 2; }
@media (max-width: 900px) { .split { grid-template-columns: minmax(0, 1fr); gap: 28px; padding-block: 52px; } .split.flip > :first-child { order: 0; } }
.split h3 { font-size: clamp(24px, 3vw, 32px); letter-spacing: -0.025em; line-height: 1.2; }
.split p { color: var(--fg-2); margin-top: 12px; }
.split .tag { font-size: 12.5px; color: var(--fg-3); }
.ticks { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 10px; }
.ticks li { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 8px; color: var(--fg-2); font-size: 14.5px; }
.ticks li::before { content: "✓"; color: var(--fg); font-size: 12px; margin-top: 2px; }
.steps3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
@media (max-width: 820px) { .steps3 { grid-template-columns: minmax(0, 1fr); } }
.steps3 > div { padding: 32px 24px; border-right: 1px solid var(--line); display: grid; gap: 8px; align-content: start; }
.steps3 > div:last-child { border-right: 0; }
@media (max-width: 820px) { .steps3 > div { border-right: 0; border-bottom: 1px solid var(--line); } .steps3 > div:last-child { border-bottom: 0; } }
.steps3 .n { font-family: var(--mono); font-size: 12px; color: var(--fg-3); }
.steps3 h3 { font-size: 20px; letter-spacing: -0.02em; }
.steps3 p { color: var(--fg-2); font-size: 14.5px; }
.steps3 a.more { margin-top: 6px; font-size: 14px; color: var(--fg); }
.steps3 a.more::after { content: " →"; }

/* 生态对照表 */
.eco { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.eco th, .eco td { text-align: left; padding: 14px 24px; border-bottom: 1px solid var(--line); vertical-align: top; }
.eco th { font-weight: 500; color: var(--fg-3); font-size: 12.5px; }
.eco td:first-child { color: var(--fg); font-weight: 500; white-space: nowrap; }
.eco td { color: var(--fg-2); }
.eco .ok { color: var(--hit); } .eco .wip { color: var(--fg-3); }
.tbl-wrap { overflow-x: auto; border-top: 1px solid var(--line); }

/* 价格 */
.prices { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
@media (max-width: 1000px) { .prices { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .prices { grid-template-columns: minmax(0, 1fr); } }
.price { padding: 32px 24px; border-right: 1px solid var(--line); display: grid; gap: 12px; align-content: start; }
.price:last-child { border-right: 0; }
@media (max-width: 1000px) { .price:nth-child(2n) { border-right: 0; } .price:nth-child(-n+2) { border-bottom: 1px solid var(--line); } }
@media (max-width: 600px) { .price { border-right: 0; border-bottom: 1px solid var(--line); } }
.price.hl { background: linear-gradient(180deg, var(--bg-2), transparent); }
.price .nm { font-size: 15px; font-weight: 500; }
.price .amt { font-size: 34px; font-weight: 500; letter-spacing: -0.03em; }
.price .amt small { font-size: 14px; color: var(--fg-3); letter-spacing: 0; margin-left: 4px; }
.price .for { color: var(--fg-2); font-size: 14px; min-height: 2.6em; }
.price ul { margin: 6px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.price li { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 8px; color: var(--fg-2); font-size: 14px; }
.price li::before { content: "✓"; color: var(--fg); font-size: 12px; margin-top: 2px; }
.price .btn { justify-self: start; margin-top: 6px; }

/* 正文排版（方法、关于、法律） */
.prose { max-width: 760px; padding-block: 24px 96px; }
.prose h2 { font-size: 26px; letter-spacing: -0.02em; margin: 56px 0 14px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 18px; margin: 28px 0 8px; }
.prose p, .prose li { color: var(--fg-2); font-size: 15.5px; line-height: 1.8; }
.prose p { margin: 0 0 12px; }
.prose ul, .prose ol { margin: 0 0 14px; padding-left: 1.3em; display: grid; gap: 6px; }
.prose b, .prose strong { color: var(--fg); font-weight: 500; }
.prose .note { border: 1px solid var(--line-2); background: var(--bg-2); border-radius: 10px; padding: 14px 16px; font-size: 14px; color: var(--fg-2); margin: 16px 0; }
.prose a { text-decoration: underline; text-underline-offset: 3px; }
.toc { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 28px; justify-content: center; }
.toc a { font-size: 13px; color: var(--fg-2); border: 1px solid var(--line-2); border-radius: 999px; padding: 5px 12px; background: var(--bg-2); }
.toc a:hover { color: var(--fg); }

/* 榜单 */
.rk-head { display: flex; justify-content: space-between; align-items: end; gap: 16px; flex-wrap: wrap; padding-block: 0 20px; }
.rk-head h2 { font-size: clamp(24px, 3vw, 32px); letter-spacing: -0.02em; }
.rk-head .meta { font-size: 13px; color: var(--fg-3); }
.rk { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.rk th, .rk td { padding: 13px 16px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
.rk th { font-weight: 500; font-size: 12.5px; color: var(--fg-3); }
.rk td.n, .rk th.n { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.rk td.name { color: var(--fg); font-weight: 500; }
.rk .cell { display: inline-flex; align-items: center; gap: 8px; justify-content: flex-end; min-width: 92px; }
.rk .mini { width: 46px; height: 4px; background: var(--bg-3); border-radius: 2px; overflow: hidden; display: inline-block; }
.rk .mini b { display: block; height: 100%; }
.rk .ci { color: var(--fg-3); font-size: 11.5px; }
.pills { display: flex; gap: 8px; flex-wrap: wrap; }
.pill { font-size: 13px; color: var(--fg-2); border: 1px solid var(--line-2); background: var(--bg-2); border-radius: 999px; padding: 5px 12px; }
.pill b { color: var(--fg); font-weight: 500; }
.rk-note { font-size: 12.5px; color: var(--fg-3); padding-top: 14px; }

/* 表单小组件（申请试用、联系） */
.lead-form { max-width: 620px; margin: 0 auto; border: 1px solid var(--line-2); background: var(--bg-1); border-radius: 12px; padding: 28px; display: grid; gap: 18px; text-align: left; }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 560px) { .two-col { grid-template-columns: minmax(0, 1fr); } }
.ok-msg { color: var(--hit); font-size: 14px; }

/* 修正：列表项里有链接时，链接不能被拆成单独一格。所有带勾/圆点的列表改成"左侧定位符号 + 正常文字流" */
.ticks li, .price li, .plan li, .tabpanel .txt li { display: block; position: relative; padding-left: 26px; }
.ticks li::before, .price li::before, .plan li::before { position: absolute; left: 0; top: 0; margin-top: 2px; }
.tabpanel .txt li::before { position: absolute; left: 4px; top: 0; margin-top: 10px; }
.ticks li a, .price li a, .plan li a { text-decoration: underline; text-underline-offset: 3px; }

/* 三栏卡片：标签做成小胶囊，入口做成按钮，整块有悬停反馈 */
.steps3 > div { transition: background .2s; grid-template-rows: auto auto 1fr auto; }
.steps3 > div:hover { background: var(--bg-1); }
.steps3 .n { justify-self: start; font-family: var(--sans); font-size: 12.5px; color: var(--fg); background: var(--bg-3); border: 1px solid var(--line-2); border-radius: 999px; padding: 3px 10px; }
.steps3 a.more { justify-self: start; align-self: end; margin-top: 18px; display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 500; color: var(--fg); background: var(--bg-3); border: 1px solid var(--line-2); border-radius: 8px; padding: 8px 14px; }
.steps3 a.more::after { content: "→"; transition: transform .2s; }
.steps3 > div:hover a.more { border-color: #4a5058; }
.steps3 > div:hover a.more::after { transform: translateX(3px); }
.steps3 a.more.primary { background: #fff; color: #111; border-color: #fff; }
.steps3 a.more.primary:hover { background: #e6e9eb; }

/* 价格：三档，每档内容上下对齐，按钮都贴底 */
.prices { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.price { grid-template-rows: auto auto auto 1fr auto; align-content: stretch; }
.price .amt { line-height: 1.15; min-height: 1.15em; }
.price .for { min-height: 0; }
.price ul { align-self: start; }
.price .btn { align-self: end; margin-top: 24px; }
.price:nth-child(-n+2) { border-bottom: 0; }
@media (max-width: 1000px) { .price:nth-child(2n) { border-right: 1px solid var(--line); } .price:last-child { border-right: 0; } }
@media (max-width: 860px) { .prices { grid-template-columns: minmax(0, 1fr); } .price, .price:nth-child(2n) { border-right: 0; border-bottom: 1px solid var(--line); } .price:last-child { border-bottom: 0; } }
.prices.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.prices.two .price:first-child { border-right: 1px solid var(--line); }
@media (max-width: 760px) { .prices.two { grid-template-columns: minmax(0, 1fr); } .prices.two .price:first-child { border-right: 0; border-bottom: 1px solid var(--line); } }
.steps3.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 820px) { .steps3.two { grid-template-columns: minmax(0, 1fr); } }

/* 首屏轮换词：和两边文字同一条基线 */
.rot { display: inline; white-space: nowrap; margin: 0 .08em; gap: 0; }
.rot i { display: inline-block; vertical-align: .14em; margin-right: .12em; }
.rot span { display: inline-block; vertical-align: baseline; }

/* 导航里的登录状态 */
.auth { display: inline-flex; align-items: center; gap: 10px; }
.auth .linkout { font: inherit; font-size: 14px; color: var(--fg-2); background: none; border: 0; padding: 0; cursor: pointer; }
.auth .linkout:hover { color: var(--fg); }
@media (max-width: 820px) { .auth { display: none; } }
.gate { border: 1px solid var(--line-2); background: var(--bg-2); border-radius: 10px; padding: 14px 16px; display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 14px; color: var(--fg-2); }
.gate b { color: var(--fg); font-weight: 500; }

/* 关于页联系方式 */
.contact-card { border: 1px solid var(--line-2); border-radius: 12px; background: var(--bg-2); padding: 22px 24px; margin: 18px 0 28px; display: grid; gap: 20px; }
.cc-main { display: flex; flex-direction: column; gap: 4px; font-size: 15px; color: var(--fg-2); }
.cc-main b { color: var(--fg); font-size: 17px; font-weight: 500; margin-bottom: 4px; }
.contact-card a { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; }
.prose ul.offices { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; border-top: 1px solid var(--line); padding-top: 18px; }
.prose ul.offices li { font-size: 14px; line-height: 1.7; padding: 0; }
.prose ul.offices li::before { content: none; }
.offices b { display: block; color: var(--fg); font-weight: 500; margin-bottom: 4px; }
@media (max-width: 720px) { .prose ul.offices { grid-template-columns: 1fr; } }
.foot-grid p a { color: inherit; }
footer .foot-grid p a { display: inline; padding: 0; margin: 0; }

/* 行业报告 */
.rcards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.rcard { display: flex; flex-direction: column; gap: 8px; border: 1px solid var(--line-2); background: var(--bg-1); border-radius: 12px; padding: 20px 22px; transition: border-color .15s, background .15s; }
.rcard:hover { border-color: var(--fg-3); background: var(--bg-2); }
.rcard .n { font-size: 12.5px; color: var(--fg-3); }
.rcard h3 { font-size: 19px; }
.rcard p { font-size: 14px; color: var(--fg-2); line-height: 1.7; flex: 1; }
.rcard .more { font-size: 13.5px; color: var(--fg); }
.rcard .more::after { content: " →"; }
.lock { position: relative; border: 1px solid var(--line-2); border-radius: 12px; overflow: hidden; min-height: 300px; }
.lock-fake { padding: 20px 22px; display: grid; gap: 16px; filter: blur(5px); opacity: .55; user-select: none; }
.lock-fake div { display: grid; grid-template-columns: 90px 1fr 48px; align-items: center; gap: 14px; font-size: 14px; }
.lock-fake i { display: block; height: 8px; border-radius: 4px; background: var(--fg-3); }
.lock-fake em { font-style: normal; text-align: right; color: var(--fg-2); }
.lock-msg { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; text-align: center; background: linear-gradient(to bottom, transparent, rgba(0,0,0,.55)); }
.lock-msg b { font-size: 18px; font-weight: 500; color: var(--fg); }
.lock-msg span { font-size: 14px; color: var(--fg-2); margin-bottom: 8px; }
.page-h .eyebrow a:hover { color: var(--fg); }
.rfilter { display: grid; grid-template-columns: 160px 160px minmax(0, 1fr); gap: 10px; margin-bottom: 16px; }
.rfilter select, .rfilter input { font: inherit; font-size: 14px; color: var(--fg); background: var(--bg-2); border: 1px solid var(--line-2); border-radius: 8px; padding: 9px 12px; min-width: 0; }
.rfilter input:focus, .rfilter select:focus { outline: none; border-color: var(--fg-3); }
@media (max-width: 640px) { .rfilter { grid-template-columns: 1fr 1fr; } .rfilter input { grid-column: 1 / -1; } }
.rlist-wrap { border: 1px solid var(--line-2); border-radius: 12px; }
.rlist { width: 100%; border-collapse: collapse; font-size: 14px; }
.rlist th, .rlist td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; color: var(--fg-2); }
.rlist th { font-weight: 500; font-size: 12.5px; color: var(--fg-3); white-space: nowrap; }
.rlist tbody tr:last-child td { border-bottom: 0; }
.rlist tbody tr:hover { background: var(--bg-2); }
.rlist td.d { font-family: var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.rlist td.t a { display: flex; flex-direction: column; gap: 3px; }
.rlist td.t b { color: var(--fg); font-weight: 500; font-size: 15px; }
.rlist td.t span { font-size: 13px; color: var(--fg-3); }
.rlist td.p { font-size: 13px; color: var(--fg-3); min-width: 160px; }
.rlist td:nth-child(2), .rlist td:nth-child(5) { white-space: nowrap; }
@media (max-width: 720px) { .rlist th:nth-child(4), .rlist td:nth-child(4), .rlist th:nth-child(5), .rlist td:nth-child(5) { display: none; } }
.rfilter select, .rfilter input { height: 44px; padding: 0 14px; line-height: 44px; box-sizing: border-box; }
.rfilter select { -webkit-appearance: none; appearance: none; padding-right: 38px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23a1a1a1' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; background-size: 10px 6px; }
.rfilter input::-webkit-search-decoration { -webkit-appearance: none; }
@media (max-width: 720px) {
  .rlist th, .rlist td { padding: 12px 10px; }
  .rlist td.d { font-size: 12px; }
}
.dot.deepseek { background: #4d6bfe; } .dot.yuanbao { background: #2fbf71; }
.lock { min-height: 220px; margin-top: 12px; }

/* 效果核验：报告示例 + 时间线 */
.vr-wrap { padding-block: 8px 72px; }
.vr { max-width: 860px; margin: 0 auto; border: 1px solid var(--line-2); border-radius: 14px; background: var(--bg-1); overflow: hidden; box-shadow: 0 30px 80px -40px rgba(255,255,255,.08); }
.vr-h { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; padding: 18px 22px; border-bottom: 1px solid var(--line); }
.vr-h b { display: block; font-size: 16px; font-weight: 500; }
.vr-h span { font-size: 13px; color: var(--fg-3); }
.vr-lock { font-size: 12.5px !important; color: var(--hit) !important; border: 1px solid color-mix(in srgb, var(--hit) 40%, transparent); border-radius: 999px; padding: 4px 10px; }
.vr-meta { display: flex; gap: 8px 18px; flex-wrap: wrap; padding: 12px 22px; font-size: 12.5px; color: var(--fg-2); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.vr-t { width: 100%; border-collapse: collapse; font-size: 14px; }
.vr-t th, .vr-t td { padding: 11px 22px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
.vr-t th { font-weight: 500; font-size: 12.5px; color: var(--fg-3); }
.vr-t td { color: var(--fg-2); }
.vr-t td[rowspan] { color: var(--fg); vertical-align: top; }
.vr-t .n { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.vr-t .up { color: var(--hit); }
.vr-t .flat { color: var(--fg-3); }
.vr-t small { font-family: inherit; font-size: 11px; margin-left: 4px; }
.vr-f { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 14px 22px; font-size: 13px; color: var(--fg-2); }
.vr-f span:first-child { color: var(--fg); }
@media (max-width: 640px) { .vr-t th, .vr-t td { padding: 10px 12px; } .vr-h, .vr-meta, .vr-f { padding-inline: 14px; } }
.tl { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); position: relative; }
.tl > div { padding: 40px 28px 44px; border-right: 1px solid var(--line); position: relative; display: grid; gap: 10px; align-content: start; }
.tl > div:last-child { border-right: 0; }
.tl > div::before { content: ""; position: absolute; top: 0; left: 28px; right: 0; height: 1px; background: var(--fg-3); }
.tl > div::after { content: ""; position: absolute; top: -4px; left: 24px; width: 9px; height: 9px; border-radius: 50%; background: var(--fg); }
.tl .n { font-size: 12.5px; color: var(--fg-3); font-family: var(--mono); }
.tl h3 { font-size: 22px; letter-spacing: -0.02em; }
.tl p { color: var(--fg-2); font-size: 14.5px; line-height: 1.75; }
@media (max-width: 820px) { .tl { grid-template-columns: 1fr; } .tl > div { border-right: 0; border-bottom: 1px solid var(--line); } }
.vr-g > div { padding-block: 32px 36px; }
.vr-g h3 { font-size: 18px; }
.tl > div::before { left: 0; }
.tl > div:first-child::before { left: 28px; }
.vr-g > div:hover { background: transparent; }
@media (max-width: 640px) {
  .vr-t { font-size: 13px; }
  .vr-t th, .vr-t td { padding: 9px 8px; }
  .vr-t th:first-child, .vr-t td[rowspan] { padding-left: 14px; }
  .vr-t th:last-child, .vr-t td:last-child { padding-right: 14px; }
  .vr-t small { display: block; margin: 2px 0 0; }
}
/* 关于页：四项服务 2×2 */
.steps3.ab { border-bottom: 0; }
.steps3.ab > div { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 36px 28px 40px; }
.steps3.ab > div:nth-child(2n) { border-right: 0; }
@media (max-width: 820px) { .steps3.ab > div { border-right: 0; } }

/* 导航栏拉满整个宽度 */
.top .frame { max-width: none; padding-inline: clamp(16px, 3vw, 40px); }
/* Plus 档 */
.price .nm em { font-style: normal; font-size: 11.5px; color: #000; background: var(--fg); border-radius: 999px; padding: 2px 8px; margin-left: 8px; vertical-align: 2px; }
.price .amt small { font-size: .45em; color: var(--fg-2); margin-left: 4px; letter-spacing: 0; }
.price.feat { background: var(--bg-1); }