/* ============================================================
   AI Grower — 站点样式
   配色：墨绿主色 / 米白底 / 青柠高亮
   ============================================================ */

:root {
  --ink: #0b1512;
  --ink-soft: #1d2b26;
  --paper: #f6f5f0;
  --paper-2: #efeee7;
  --white: #ffffff;
  --green: #10624a;
  --green-deep: #0a3f30;
  --lime: #c9f24e;
  --lime-soft: #e8f9bd;
  --muted: #66756e;
  --line: rgba(11, 21, 18, 0.12);
  --line-strong: rgba(11, 21, 18, 0.22);
  --radius: 4px;
  --radius-lg: 10px;
  --shadow: 0 18px 50px -24px rgba(11, 21, 18, 0.28);
  --max: 1180px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.18;
}

p { margin: 0; }

::selection { background: var(--lime); color: var(--ink); }

/* ---------- 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}

.section { padding: clamp(64px, 9vw, 128px) 0; position: relative; }
.section--tight { padding: clamp(48px, 6vw, 80px) 0; }
.section--paper2 { background: var(--paper-2); }
.section--ink { background: var(--ink); color: var(--paper); }
.section--green { background: var(--green-deep); color: var(--paper); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  font-weight: 600;
}
.section--ink .eyebrow, .section--green .eyebrow { color: var(--lime); }
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.section-head { max-width: 780px; margin-bottom: clamp(36px, 4vw, 56px); }
.section-head h2 {
  font-size: clamp(28px, 3.6vw, 46px);
  margin: 18px 0 18px;
}
.section-head p {
  font-size: clamp(15px, 1.35vw, 18px);
  color: var(--muted);
  max-width: 680px;
}
.section--ink .section-head p, .section--green .section-head p { color: rgba(246, 245, 240, 0.68); }

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(246, 245, 240, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 18px;
}
.brand__mark {
  width: 26px; height: 26px;
  border-radius: 8px;
  background: linear-gradient(140deg, var(--green) 20%, var(--lime) 120%);
  position: relative;
  flex: none;
}
.brand__mark::after {
  content: "";
  position: absolute;
  inset: 8px 8px 8px 8px;
  border-radius: 2px;
  background: var(--paper);
  clip-path: polygon(0 100%, 0 45%, 28% 45%, 28% 100%, 40% 100%, 40% 22%, 68% 22%, 68% 100%, 80% 100%, 80% 0, 100% 0, 100% 100%);
}
.brand span small {
  display: block;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
  line-height: 1.2;
}

.nav__links { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav__links a { color: var(--ink-soft); position: relative; padding: 4px 0; }
.nav__links a::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 0; height: 1px; background: var(--green);
  transition: width 0.3s var(--ease);
}
.nav__links a:hover::after { width: 100%; }

.nav__actions { display: flex; align-items: center; gap: 14px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.22s var(--ease), background 0.22s, color 0.22s, border-color 0.22s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--green); color: var(--white); }
.btn--primary:hover { background: var(--green-deep); }
.btn--lime { background: var(--lime); color: var(--ink); }
.btn--lime:hover { background: #d8ff6b; }
.btn--ghost { border-color: var(--line-strong); color: var(--ink); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--onink { border-color: rgba(246,245,240,0.28); color: var(--paper); }
.btn--onink:hover { border-color: var(--lime); color: var(--lime); }
.btn--sm { height: 38px; padding: 0 16px; font-size: 13.5px; }

.nav__burger {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--line-strong);
  background: transparent;
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
}
.nav__burger i {
  display: block; width: 16px; height: 1.6px; background: var(--ink);
  margin: 4px auto;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(56px, 8vw, 110px) 0 clamp(48px, 6vw, 80px);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: "";
  position: absolute;
  right: -18vw; top: -30vh;
  width: 70vw; height: 70vw;
  background: radial-gradient(circle at center, rgba(201, 242, 78, 0.42), rgba(16, 98, 74, 0.10) 45%, transparent 68%);
  filter: blur(10px);
  pointer-events: none;
}
.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: end;
}
.hero h1 {
  font-size: clamp(34px, 4.6vw, 62px);
  line-height: 1.12;
  letter-spacing: -0.035em;
  margin: 20px 0 24px;
}
.hero h1 em {
  font-style: normal;
  color: var(--green);
  position: relative;
  white-space: nowrap;
}
.hero h1 em::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0.06em;
  height: 0.28em;
  background: var(--lime);
  z-index: -1;
}
.hero__sub {
  font-size: clamp(16px, 1.5vw, 19px);
  color: var(--muted);
  max-width: 560px;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero__note { margin-top: 18px; font-size: 13px; color: var(--muted); }

.hero__panel {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.62);
  padding: 26px;
  box-shadow: var(--shadow);
}
.hero__panel h3 { font-size: 14px; letter-spacing: 0.04em; color: var(--muted); font-weight: 600; text-transform: uppercase; }
.hero__list { list-style: none; margin: 16px 0 0; padding: 0; }
.hero__list li {
  display: flex;
  gap: 12px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  align-items: flex-start;
}
.hero__list li:first-child { border-top: none; }
.hero__list b { display: block; font-weight: 650; font-size: 15px; }
.hero__list small { color: var(--muted); font-size: 13px; }
.dot {
  flex: none; width: 20px; height: 20px; border-radius: 50%;
  background: var(--lime); color: var(--green-deep);
  display: grid; place-items: center;
  font-size: 11px; font-weight: 700; margin-top: 3px;
}

/* ---------- 数据条 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.stats div {
  padding: 26px 26px 26px 0;
  border-right: 1px solid var(--line);
}
.stats div:last-child { border-right: none; }
.stats b {
  display: block;
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -0.03em;
  line-height: 1;
  font-weight: 650;
}
.stats span { font-size: 13px; color: var(--muted); display: block; margin-top: 8px; }

/* ---------- 痛点三栏 ---------- */
.cols3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.pain {
  background: var(--paper);
  padding: clamp(24px, 3vw, 38px);
  position: relative;
  transition: background 0.3s;
}
.pain:hover { background: var(--white); }
.pain__num {
  font-size: 12px; font-weight: 700; letter-spacing: 0.16em;
  color: var(--muted);
}
.pain h3 { font-size: clamp(19px, 1.8vw, 24px); margin: 18px 0 12px; }
.pain p { font-size: 14.5px; color: var(--muted); }
.pain--accent { background: var(--green-deep); color: var(--paper); }
.pain--accent:hover { background: var(--green-deep); }
.pain--accent .pain__num { color: var(--lime); }
.pain--accent p { color: rgba(246, 245, 240, 0.76); }

/* ---------- 产品矩阵 ---------- */
.matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  padding: clamp(22px, 2.6vw, 34px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}
.card__tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--lime-soft);
  padding: 4px 10px;
  border-radius: 999px;
  align-self: flex-start;
}
.card h3 { font-size: clamp(20px, 2vw, 26px); }
.card p { font-size: 14.5px; color: var(--muted); }
.card ul {
  list-style: none; padding: 0; margin: 4px 0 0;
  display: grid; gap: 9px;
  font-size: 14px;
}
.card ul li { display: flex; gap: 9px; }
.card ul li::before {
  content: "→";
  color: var(--green);
  font-size: 13px;
  line-height: 1.7;
}
.card__foot {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13.5px;
}
.card__foot a { font-weight: 600; color: var(--green); }
.card__foot a:hover { text-decoration: underline; }

.card--wide { grid-column: span 2; }
.card--ink { background: var(--ink); color: var(--paper); border-color: transparent; }
.card--ink p, .card--ink .card__foot { color: rgba(246,245,240,0.7); }
.card--ink .card__foot { border-top-color: rgba(246,245,240,0.16); }
.card--ink ul li::before { color: var(--lime); }
.card--ink .card__foot a { color: var(--lime); }

/* ---------- 对比表 ---------- */
.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.compare th, .compare td {
  padding: 18px 20px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}
.compare thead th {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--paper-2);
  font-weight: 700;
}
.compare tbody th {
  font-weight: 600;
  width: 18%;
  color: var(--ink);
  background: rgba(246,245,240,0.5);
}
.compare .no { color: var(--muted); }
.compare .no::before { content: "✕ "; color: #c2543f; font-weight: 700; }
.compare .yes { color: var(--ink); }
.compare .yes::before { content: "✓ "; color: var(--green); font-weight: 700; }
.compare tbody tr:last-child th, .compare tbody tr:last-child td { border-bottom: none; }
.compare td.hl { background: rgba(201, 242, 78, 0.18); font-weight: 600; }

/* ---------- 交付路径 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
.step {
  padding-top: 20px;
  border-top: 2px solid var(--line-strong);
  position: relative;
}
.step::before {
  content: "0" counter(step);
  counter-increment: step;
  position: absolute;
  top: -2px; left: 0;
  transform: translateY(-120%);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--green);
}
.step h3 { font-size: 19px; margin-bottom: 10px; }
.step p { font-size: 14px; color: var(--muted); }
.step small {
  display: block; margin-top: 12px;
  font-size: 12px; letter-spacing: 0.06em;
  color: var(--green); font-weight: 600;
}
.section--ink .step { border-top-color: rgba(246,245,240,0.22); }
.section--ink .step::before { color: var(--lime); }
.section--ink .step p { color: rgba(246,245,240,0.66); }
.section--ink .step small { color: var(--lime); }

/* ---------- 场景卡片 ---------- */
.scenes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.scene {
  background: var(--white);
  padding: 26px;
  min-height: 190px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 0.25s;
}
.scene:hover { background: var(--lime-soft); }
.scene b { font-size: 16px; font-weight: 650; }
.scene p { font-size: 13.5px; color: var(--muted); }
.scene em {
  font-style: normal;
  margin-top: auto;
  font-size: 12.5px;
  font-weight: 650;
  color: var(--green);
}

/* ---------- 客户案例 ---------- */
.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.case {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  padding: clamp(22px, 2.4vw, 30px);
  display: flex;
  flex-direction: column;
  gap: 13px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.case:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.case__tag {
  display: inline-flex; align-self: flex-start;
  font-size: 11.5px; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--lime-soft);
  padding: 4px 10px;
  border-radius: 999px;
}
.case > b { font-size: clamp(17px, 1.6vw, 20px); line-height: 1.4; font-weight: 650; }
.case > p { font-size: 14px; color: var(--muted); flex: 1; }
.case__stats {
  display: flex;
  gap: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.case__stats b {
  display: block;
  font-size: 20px;
  color: var(--green);
  letter-spacing: -0.02em;
  line-height: 1.15;
  white-space: nowrap;
}
.case__stats span { font-size: 11.5px; color: var(--muted); display: block; margin-top: 3px; }

/* ---------- 公开课 ---------- */
.event {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}
.event__box {
  border: 1px solid rgba(246,245,240,0.16);
  border-radius: var(--radius-lg);
  padding: 26px;
  background: rgba(246,245,240,0.04);
}
.event__box h3 { font-size: 18px; margin-bottom: 14px; }
.event__box ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; font-size: 14px; }
.event__box li { display: flex; justify-content: space-between; gap: 16px; border-bottom: 1px dashed rgba(246,245,240,0.16); padding-bottom: 12px; }
.event__box li:last-child { border-bottom: none; padding-bottom: 0; }
.event__box span { color: rgba(246,245,240,0.62); }

/* ---------- 表单 / 转化 ---------- */
.contact {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(30px, 4vw, 64px);
}
.contact__side p { color: var(--muted); font-size: 15px; margin-top: 16px; max-width: 420px; }
.contact__list { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 14px; font-size: 14.5px; }
.contact__list li { display: flex; gap: 12px; align-items: flex-start; }
.contact__list i {
  flex: none; width: 22px; height: 22px; border-radius: 6px;
  background: var(--paper-2); display: grid; place-items: center;
  font-style: normal; font-size: 12px; color: var(--green); font-weight: 700;
}
.qr {
  margin-top: 26px;
  display: flex; align-items: center; gap: 14px;
  font-size: 13px; color: var(--muted);
}
.qr__box {
  width: 92px; height: 92px;
  border: 1px dashed var(--line-strong);
  border-radius: 8px;
  display: grid; place-items: center;
  font-size: 11px; text-align: center;
  color: var(--muted);
  background: var(--white);
  padding: 8px;
  line-height: 1.4;
}

.form {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 36px);
  box-shadow: var(--shadow);
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 7px; margin-bottom: 14px; }
.field label { font-size: 12.5px; font-weight: 600; letter-spacing: 0.04em; color: var(--ink-soft); }
.field input, .field select, .field textarea {
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--paper);
  padding: 0 13px;
  font-size: 14.5px;
  font-family: inherit;
  color: var(--ink);
  transition: border-color 0.2s, background 0.2s;
  width: 100%;
}
.field textarea { height: auto; padding: 12px 13px; resize: vertical; min-height: 92px; line-height: 1.6; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--green);
  background: var(--white);
}
.form .btn { width: 100%; margin-top: 6px; height: 48px; }
.form__tip { font-size: 12px; color: var(--muted); margin-top: 12px; text-align: center; }
.form__ok {
  display: none;
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--lime-soft);
  color: var(--green-deep);
  font-size: 14px;
  font-weight: 600;
}
.form__ok.show { display: block; }

/* ---------- 页脚 ---------- */
.footer {
  background: var(--ink);
  color: rgba(246,245,240,0.68);
  padding: 64px 0 32px;
  font-size: 14px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(246,245,240,0.14);
}
.footer .brand { color: var(--paper); }
.footer .brand small { color: rgba(246,245,240,0.5); }
.footer__desc { margin-top: 16px; max-width: 300px; font-size: 13.5px; line-height: 1.8; }
.footer h4 { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: rgba(246,245,240,0.5); margin-bottom: 14px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; font-size: 13.5px; }
.footer a:hover { color: var(--lime); }
.footer__bottom {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-top: 24px; font-size: 12.5px; color: rgba(246,245,240,0.45);
}

/* ---------- 动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; align-items: start; }
  .hero__panel { max-width: 520px; }
  .cols3 { grid-template-columns: 1fr; }
  .matrix { grid-template-columns: 1fr; }
  .card--wide { grid-column: span 1; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; }
  .scenes { grid-template-columns: repeat(2, 1fr); }
  .cases { grid-template-columns: 1fr; }
  .event { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stats div { border-bottom: 1px solid var(--line); }
  .stats div:nth-child(2n) { border-right: none; }
}

@media (max-width: 1200px) {
  .nav__actions .btn--ghost { display: none; }
}

@media (max-width: 720px) {
  .wrap { padding: 0 20px; }
  .nav__links { display: none; }
  .nav__burger { display: block; }
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 18px 20px 24px;
    gap: 16px;
    align-items: flex-start;
  }
  .nav__actions .btn--ghost { display: none; }
  .steps { grid-template-columns: 1fr; }
  .scenes { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .compare { font-size: 13px; }
  .compare th, .compare td { padding: 12px 12px; }
  .compare thead th:first-child { display: none; }
  .compare tbody th { width: auto; font-size: 12px; }
}

/* ============================================================
   产品详情页
   ============================================================ */
.pagehead {
  padding: clamp(48px, 6vw, 88px) 0 clamp(32px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(60vw 30vw at 85% -10%, rgba(201,242,78,.35), transparent 60%),
    var(--paper);
}
.pagehead h1 {
  font-size: clamp(32px, 4.6vw, 58px);
  margin: 18px 0 20px;
  letter-spacing: -0.035em;
}
.pagehead p { max-width: 660px; color: var(--muted); font-size: clamp(15px,1.4vw,18px); }

.anchorbar {
  position: sticky; top: 68px; z-index: 60;
  background: rgba(246,245,240,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.anchorbar__inner {
  display: flex; gap: 26px; overflow-x: auto; padding: 14px 0;
  font-size: 13.5px; white-space: nowrap;
  scrollbar-width: none;
}
.anchorbar__inner::-webkit-scrollbar { display: none; }
.anchorbar a { color: var(--muted); padding-bottom: 2px; border-bottom: 1px solid transparent; }
.anchorbar a:hover { color: var(--ink); border-bottom-color: var(--ink); }

.pdp { padding: clamp(52px, 7vw, 96px) 0; border-bottom: 1px solid var(--line); }
.pdp:last-of-type { border-bottom: none; }
.pdp__head {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 4vw, 64px); align-items: start;
  margin-bottom: clamp(28px, 3.5vw, 46px);
}
.pdp__head h2 { font-size: clamp(26px, 3vw, 38px); margin: 14px 0 0; }
.pdp__lead { font-size: clamp(15px,1.3vw,17px); color: var(--ink-soft); }
.pdp__lead p + p { margin-top: 14px; color: var(--muted); }

.facts {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 30px;
}
.fact { background: var(--white); padding: 20px 22px; }
.fact small { display: block; font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.fact b { font-size: 15.5px; font-weight: 650; }

.two { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 3vw, 48px); }
.block h3 { font-size: 17px; margin-bottom: 16px; display: flex; align-items: center; gap: 9px; }
.block h3::before {
  content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--green);
}
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; font-size: 14.5px; }
.checks li { display: flex; gap: 10px; color: var(--ink-soft); }
.checks li::before {
  content: "✓"; flex: none;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--lime-soft); color: var(--green);
  font-size: 11px; display: grid; place-items: center;
  margin-top: 3px; font-weight: 700;
}

.fitbox {
  margin-top: 32px; padding: 24px;
  background: var(--paper-2); border-radius: var(--radius-lg);
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.fitbox h4 { font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.fitbox p { font-size: 14px; }
.fitbox .no { color: var(--muted); }

.pdp__cta {
  margin-top: 32px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
  padding-top: 24px; border-top: 1px solid var(--line);
}
.pdp__cta span { font-size: 13px; color: var(--muted); }

@media (max-width: 1024px) {
  .pdp__head, .two, .fitbox { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .anchorbar { top: 68px; }
  .facts { grid-template-columns: 1fr; }
}

/* ---------- 导航当前页高亮 ---------- */
.nav__links a.active { color: var(--green); font-weight: 650; }
.nav__links a.active::after { width: 100%; }