/* TestHub Landing · Solar Grove — blue / pink / orange / green */
:root {
  --blue: #2F7DE1;
  --blue-soft: #7EB6F5;
  --pink: #F07AB8;
  --pink-soft: #F9B4D8;
  --orange: #F08A3A;
  --orange-soft: #F7C08A;
  --green: #2FAE78;
  --green-soft: #8AD9B4;
  --ink: #1A2B3C;
  --ink-soft: #4A6074;
  --paper: #F7FBFF;
  --line: rgba(47, 125, 225, 0.14);
  --shadow: 0 18px 50px rgba(47, 125, 225, 0.12);
  --radius: 22px;
  --font-display: "Fraunces", "Songti SC", serif;
  --font-body: "Sora", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: auto; }
body.grove-page {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 700px at 12% -10%, rgba(126, 182, 245, 0.45), transparent 60%),
    radial-gradient(900px 600px at 92% 8%, rgba(249, 180, 216, 0.38), transparent 55%),
    radial-gradient(800px 500px at 70% 40%, rgba(247, 192, 138, 0.28), transparent 50%),
    radial-gradient(700px 500px at 18% 70%, rgba(138, 217, 180, 0.28), transparent 55%),
    linear-gradient(180deg, #F4FAFF 0%, #FFF9F4 42%, #F5FFF9 100%);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.grove-sky {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.grove-sky__sun {
  position: absolute;
  top: -8vmax;
  right: -4vmax;
  width: 42vmax;
  height: 42vmax;
  border-radius: 50%;
  background:
    radial-gradient(circle at 40% 40%, rgba(255, 236, 180, 0.95) 0%, rgba(240, 138, 58, 0.28) 35%, transparent 68%);
  filter: blur(2px);
  animation: grove-breathe 10s ease-in-out infinite;
}
.grove-sky__haze {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.15), transparent 30%),
    repeating-linear-gradient(115deg, transparent 0 18px, rgba(255,255,255,0.035) 18px 19px);
  opacity: 0.7;
}
.grove-sky__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(47, 125, 225, 0.12);
  pointer-events: none;
}
.grove-sky__ring--1 {
  width: 28vmax; height: 28vmax;
  top: 18%; left: -8%;
  border-color: rgba(47, 174, 120, 0.14);
}
.grove-sky__ring--2 {
  width: 18vmax; height: 18vmax;
  top: 8%; right: 12%;
  border-color: rgba(240, 122, 184, 0.16);
}
.grove-sky__ring--3 {
  width: 22vmax; height: 22vmax;
  bottom: 10%; right: -6%;
  border-color: rgba(240, 138, 58, 0.14);
}
.grove-deco {
  position: absolute;
  width: clamp(56px, 8vw, 108px);
  opacity: 0.9;
  will-change: transform;
  filter: drop-shadow(0 10px 22px rgba(47, 125, 225, 0.12));
  pointer-events: none;
}
.grove-deco--1 { top: 12%; left: 4%; }
.grove-deco--2 { top: 24%; right: 5%; width: clamp(48px, 6.5vw, 88px); }
.grove-deco--3 { top: 56%; left: 3%; width: clamp(50px, 7vw, 96px); }
.grove-deco--4 { top: 68%; right: 4%; width: clamp(54px, 7.5vw, 100px); }
.grove-deco--5 { top: 40%; left: 46%; width: clamp(36px, 4.5vw, 64px); opacity: 0.7; }
.grove-deco--6 { top: 48%; right: 22%; width: clamp(34px, 4vw, 58px); opacity: 0.55; }

@keyframes grove-breathe {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.04); opacity: 1; }
}

.grove-wrap { position: relative; z-index: 1; }

.grove-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px) saturate(1.2);
  background: rgba(247, 251, 255, 0.72);
  border-bottom: 1px solid rgba(47, 125, 225, 0.08);
}
.grove-nav__inner {
  max-width: none;
  width: 100%;
  box-sizing: border-box;
  margin: 0;
  /* 左右贴边但留缝：约 18–32px，随屏宽微调 */
  padding: 0.85rem clamp(1.125rem, 2.4vw, 2rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 0.85rem;
}
.grove-nav__inner > .grove-brand {
  justify-self: start;
}
.grove-nav__inner > .grove-nav__links {
  justify-self: center;
}
.grove-nav__inner > .grove-nav__actions {
  justify-self: end;
}
.grove-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.grove-brand__mark {
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 0.72rem;
  display: grid;
  place-items: center;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 8px 20px rgba(47, 125, 225, 0.26);
}
.grove-brand__mark svg {
  width: 100%;
  height: 100%;
  display: block;
}
.grove-brand__text {
  font-family: var(--font-display);
  font-size: 1.15rem;
  background: linear-gradient(90deg, var(--blue), var(--pink) 45%, var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.grove-nav__links {
  display: none;
  gap: 1.1rem;
  font-size: 0.86rem;
  color: var(--ink-soft);
}
.grove-nav__links a {
  position: relative;
  transition: color 0.25s var(--ease);
}
.grove-nav__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: -0.25rem;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), var(--green));
  transition: right 0.3s var(--ease);
}
.grove-nav__links a:hover { color: var(--ink); }
.grove-nav__links a:hover::after { right: 0; }

.grove-nav__actions {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex-shrink: 0;
}
.grove-btn--login {
  padding: 0.52rem 1rem;
  font-size: 0.84rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.62);
  border-color: rgba(47, 125, 225, 0.2);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 1px 2px rgba(47, 125, 225, 0.06);
}
.grove-btn--login:hover {
  transform: translateY(-1px);
  color: #1e4f9a;
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(47, 125, 225, 0.35);
  box-shadow: 0 8px 18px rgba(47, 125, 225, 0.14);
}
@media (max-width: 720px) {
  .grove-nav__actions .grove-btn--primary {
    padding: 0.55rem 0.9rem;
    font-size: 0.82rem;
  }
  .grove-btn--login {
    padding: 0.48rem 0.85rem;
  }
}

.grove-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.72rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
  will-change: transform;
}
.grove-btn--primary {
  color: #fff;
  background: linear-gradient(120deg, var(--blue), #5B9CF0 40%, var(--green));
  box-shadow: 0 10px 28px rgba(47, 125, 225, 0.28);
}
.grove-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(47, 125, 225, 0.34);
}
.grove-btn--ghost {
  color: var(--ink);
  background: rgba(255,255,255,0.55);
  border-color: rgba(47, 125, 225, 0.18);
  backdrop-filter: blur(8px);
}
.grove-btn--ghost:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,0.85);
}
.grove-btn--pink {
  background: linear-gradient(120deg, var(--pink), var(--orange));
  box-shadow: 0 10px 28px rgba(240, 122, 184, 0.28);
}
.grove-btn--orange {
  background: linear-gradient(120deg, var(--orange), #F5B056);
  box-shadow: 0 10px 28px rgba(240, 138, 58, 0.28);
}
.grove-btn--green {
  background: linear-gradient(120deg, var(--green), #5BC99A);
  box-shadow: 0 10px 28px rgba(47, 174, 120, 0.28);
}

.grove-hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(2.5rem, 7vh, 5rem) 1.25rem 3rem;
  min-height: min(92vh, 920px);
  display: grid;
  align-content: center;
  position: relative;
}
.grove-hero__brand {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5.4rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  background: linear-gradient(105deg, var(--blue) 0%, var(--pink) 35%, var(--orange) 68%, var(--green) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.grove-hero__title {
  margin: 0 0 1rem;
  max-width: 18ch;
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.grove-hero__sub {
  margin: 0 0 1.75rem;
  max-width: 38rem;
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--ink-soft);
}
.grove-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}
.grove-hero__plant {
  position: absolute;
  right: 0;
  bottom: 8%;
  width: min(46vw, 460px);
  pointer-events: none;
  opacity: 0.95;
}
.grove-hero__plant svg { width: 100%; height: auto; }

.grove-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}
.grove-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--ink-soft);
  background: rgba(255,255,255,0.62);
  border: 1px solid rgba(47, 125, 225, 0.12);
  backdrop-filter: blur(8px);
}
.grove-chip__dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
}
.grove-chip__dot--b { background: var(--blue); }
.grove-chip__dot--p { background: var(--pink); }
.grove-chip__dot--o { background: var(--orange); }
.grove-chip__dot--g { background: var(--green); }

.grove-chapters {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1rem 1.25rem 4rem;
  display: grid;
  gap: 2.5rem;
}
.grove-chapter {
  position: relative;
  padding: clamp(1.5rem, 3vw, 2.4rem);
  border-radius: calc(var(--radius) + 6px);
  background: rgba(255,255,255,0.58);
  border: 1px solid rgba(255,255,255,0.7);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  overflow: hidden;
  transform: translateY(24px);
  opacity: 0;
}
.grove-chapter.is-in {
  transform: none;
  opacity: 1;
  transition: transform 0.8s var(--ease), opacity 0.8s var(--ease);
}
.grove-chapter::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: linear-gradient(180deg, var(--accent, var(--blue)), transparent);
}
.grove-chapter--blue { --accent: var(--blue); }
.grove-chapter--pink { --accent: var(--pink); }
.grove-chapter--orange { --accent: var(--orange); }
.grove-chapter--green { --accent: var(--green); }
.grove-chapter--mix { --accent: var(--blue); }

.grove-chapter__grid {
  display: grid;
  gap: 1.5rem;
  align-items: center;
}
.grove-chapter__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.7rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent, var(--blue));
  font-weight: 650;
}
.grove-chapter__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.grove-chapter__title em {
  font-style: normal;
  background: linear-gradient(90deg, var(--accent, var(--blue)), var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.grove-chapter__text {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  line-height: 1.75;
  font-size: 0.98rem;
}
.grove-chapter__list {
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
}
.grove-chapter__list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.55;
}
.grove-chapter__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent, var(--blue));
}
.grove-note {
  margin: 0 0 1.1rem;
  padding: 0.85rem 1rem;
  border-radius: 14px;
  background: rgba(47, 125, 225, 0.06);
  border: 1px dashed rgba(47, 125, 225, 0.2);
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.6;
}
.grove-note b {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--blue);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.grove-visual {
  position: relative;
  min-height: 220px;
  border-radius: 18px;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 25%, rgba(255,255,255,0.9), transparent 45%),
    linear-gradient(145deg, rgba(126,182,245,0.25), rgba(249,180,216,0.2), rgba(138,217,180,0.25));
  border: 1px solid rgba(255,255,255,0.65);
}
.grove-visual__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(0.5px);
  animation: grove-float 7s ease-in-out infinite;
}
.grove-visual__orb--1 {
  width: 42%; height: 42%;
  top: 12%; left: 14%;
  background: radial-gradient(circle, rgba(47,125,225,0.45), transparent 70%);
}
.grove-visual__orb--2 {
  width: 36%; height: 36%;
  right: 10%; bottom: 14%;
  background: radial-gradient(circle, rgba(240,122,184,0.4), transparent 70%);
  animation-delay: -2s;
}
.grove-visual__orb--3 {
  width: 28%; height: 28%;
  left: 42%; bottom: 18%;
  background: radial-gradient(circle, rgba(47,174,120,0.38), transparent 70%);
  animation-delay: -4s;
}
.grove-visual__panel {
  position: absolute;
  inset: 18% 12%;
  border-radius: 16px;
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  padding: 1rem 1.1rem;
  display: grid;
  gap: 0.55rem;
  align-content: center;
}
.grove-visual__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--ink-soft);
}
.grove-visual__row strong { color: var(--ink); font-weight: 650; }
.grove-visual__bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(47,125,225,0.12);
  overflow: hidden;
}
.grove-visual__bar > i {
  display: block;
  height: 100%;
  width: var(--w, 60%);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--green));
}
.grove-visual__plant {
  position: absolute;
  right: -2%;
  bottom: -4%;
  width: 42%;
  opacity: 0.85;
  pointer-events: none;
}

@keyframes grove-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.grove-matrix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}
.grove-matrix__item {
  padding: 0.9rem 1rem;
  border-radius: 14px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(47, 125, 225, 0.1);
}
.grove-matrix__item strong {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.92rem;
}
.grove-matrix__item p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--ink-soft);
  line-height: 1.45;
}

.grove-cta {
  max-width: 1120px;
  margin: 0 auto 3rem;
  padding: 0 1.25rem;
}
.grove-cta__inner {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  padding: clamp(2rem, 4vw, 3rem);
  text-align: center;
  color: #fff;
  background:
    radial-gradient(600px 280px at 20% 0%, rgba(249,180,216,0.45), transparent 60%),
    radial-gradient(500px 260px at 90% 100%, rgba(138,217,180,0.4), transparent 55%),
    linear-gradient(125deg, #2F7DE1 0%, #6B8EF5 35%, #F08A3A 78%, #2FAE78 110%);
  box-shadow: 0 24px 60px rgba(47, 125, 225, 0.28);
}
.grove-cta__inner h2 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
}
.grove-cta__inner p {
  margin: 0 auto 1.4rem;
  max-width: 34rem;
  opacity: 0.92;
  line-height: 1.65;
}
.grove-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}
.grove-cta .grove-btn--primary {
  background: #fff;
  color: var(--blue);
  box-shadow: 0 10px 28px rgba(0,0,0,0.12);
}
.grove-cta .grove-btn--ghost {
  color: #fff;
  border-color: rgba(255,255,255,0.45);
  background: rgba(255,255,255,0.12);
}

.grove-footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2.5rem;
}
.grove-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}
.grove-footer__brand strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
}
.grove-footer__brand span {
  font-size: 0.8rem;
  color: var(--ink-soft);
}
.grove-footer__nav {
  display: flex;
  gap: 1rem;
  font-size: 0.86rem;
  color: var(--ink-soft);
}
.grove-footer__nav a:hover { color: var(--blue); }
.grove-footer__legal {
  width: 100%;
  margin-top: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.55rem;
  justify-content: center;
  font-size: 0.72rem;
  color: rgba(74, 96, 116, 0.8);
}
.grove-footer__legal a {
  color: rgba(74, 96, 116, 0.9);
  transition: color 0.2s ease;
}
.grove-footer__legal a:hover { color: var(--blue); }

.grove-top {
  position: fixed;
  right: 1.15rem;
  bottom: 1.15rem;
  z-index: 60;
  width: 3rem;
  height: 3rem;
  padding: 0;
  margin: 0;
  border: 1px solid rgba(255,255,255,0.55);
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
  background:
    radial-gradient(circle at 30% 28%, rgba(255,255,255,0.35), transparent 45%),
    linear-gradient(145deg, var(--blue) 0%, #6AA0F0 35%, var(--pink) 70%, var(--green) 100%);
  box-shadow:
    0 12px 28px rgba(47, 125, 225, 0.28),
    inset 0 1px 0 rgba(255,255,255,0.35);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px) scale(0.96);
  transition: opacity 0.25s ease, transform 0.25s var(--ease), box-shadow 0.25s ease;
  overflow: visible;
}
.grove-top__ring {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid rgba(240, 138, 58, 0.35);
  opacity: 0.7;
  pointer-events: none;
}
.grove-top__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin: 0;
  transform: translateY(-0.5px);
}
.grove-top__icon svg {
  display: block;
  width: 18px;
  height: 18px;
}
.grove-top:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow:
    0 16px 34px rgba(47, 125, 225, 0.34),
    inset 0 1px 0 rgba(255,255,255,0.4);
}
.grove-top:focus-visible {
  outline: 2px solid rgba(47, 125, 225, 0.45);
  outline-offset: 3px;
}
.grove-top.is-on {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}
.grove-top.is-on:hover {
  transform: translateY(-2px) scale(1.03);
}

@media (min-width: 860px) {
  .grove-nav__links { display: flex; }
  .grove-chapter__grid {
    grid-template-columns: 1.15fr 0.95fr;
  }
  .grove-chapter__grid--flip {
    grid-template-columns: 0.95fr 1.15fr;
  }
  .grove-chapter__grid--flip .grove-chapter__copy { order: 2; }
  .grove-matrix { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 859px) {
  .grove-hero__plant {
    position: relative;
    width: min(78vw, 320px);
    margin: 1.5rem auto 0;
    bottom: auto;
    right: auto;
  }
  .grove-hero { min-height: auto; padding-top: 2rem; }
}

@media (prefers-reduced-motion: reduce) {
  .grove-sky__sun,
  .grove-visual__orb,
  .grove-deco { animation: none !important; }
  .grove-chapter {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}