:root {
  --bg: #eef3f0;
  --surface: #ffffff;
  --ink: #111714;
  --muted: #66736b;
  --line: #d7e1db;
  --accent: #13a27d;
  --accent-dark: #064f3d;
  --gold: #b7892d;
  --navy: #0a1512;
  --shadow: 0 28px 90px rgba(8, 30, 23, 0.16);
  --sidebar: 17.5rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(120deg, rgba(19, 162, 125, 0.08), transparent 34rem),
    linear-gradient(180deg, #f8faf8 0%, var(--bg) 64%, #e8efeb 100%);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

body.modal-open {
  overflow: hidden;
}

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

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 30;
  display: flex;
  width: var(--sidebar);
  flex-direction: column;
  gap: 2.25rem;
  padding: 1.3rem;
  border-right: 1px solid rgba(215, 225, 219, 0.8);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(243, 248, 245, 0.78)),
    linear-gradient(135deg, rgba(19, 162, 125, 0.08), transparent 50%);
  backdrop-filter: blur(22px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
}

.brand span:last-child {
  display: grid;
  line-height: 1.2;
}

.brand small {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(145deg, #111714, #20352d);
  color: #f5fbf8;
  font-size: 0.9rem;
}

.side-nav {
  display: grid;
  gap: 0.35rem;
}

.side-nav a {
  border-radius: 8px;
  color: var(--muted);
  font-weight: 750;
  padding: 0.78rem 0.85rem;
  transition:
    background 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.side-nav a:hover {
  background: rgba(19, 162, 125, 0.1);
  color: var(--ink);
  transform: translateX(2px);
}

.sidebar-contact {
  display: grid;
  gap: 0.25rem;
  margin-top: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.72);
}

.sidebar-contact span {
  color: var(--muted);
  font-size: 0.78rem;
}

.sidebar-contact a {
  color: var(--accent-dark);
  font-weight: 850;
}

.page {
  margin-left: var(--sidebar);
}

.section {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(3.6rem, 8vw, 6.5rem) 0;
}

.hero {
  position: relative;
  isolation: isolate;
  display: grid;
  min-height: 100svh;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.78fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 2.2rem -8vw 2.2rem -8vw;
  z-index: -2;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 32px;
  background:
    linear-gradient(110deg, rgba(255, 255, 255, 0.94), rgba(246, 251, 248, 0.78) 46%, rgba(8, 21, 18, 0.08)),
    linear-gradient(135deg, rgba(19, 162, 125, 0.1), transparent 45%);
  box-shadow: 0 38px 120px rgba(8, 30, 23, 0.12);
}

.hero-canvas {
  position: absolute;
  inset: 2.2rem -8vw;
  z-index: -1;
  width: calc(100% + 16vw);
  height: calc(100% - 4.4rem);
  opacity: 0.9;
  pointer-events: none;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(3rem, 5.8vw, 6.2rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 0.45rem;
  font-size: 1.08rem;
  letter-spacing: 0;
}

.hero-text {
  max-width: 650px;
  margin: 1.35rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.45vw, 1.18rem);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.35rem;
}

.hero-proof span {
  border: 1px solid rgba(19, 162, 125, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: #315047;
  font-size: 0.86rem;
  font-weight: 850;
  padding: 0.34rem 0.72rem;
  box-shadow: 0 8px 28px rgba(8, 30, 23, 0.06);
}

.hero-actions,
.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.8rem;
}

.btn {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0.78rem 1.05rem;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, #111714, #0c4f3d);
  color: #f5fbf8;
  box-shadow: 0 14px 32px rgba(6, 79, 61, 0.24);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #18231f, #0b654d);
}

.btn-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
}

.btn-secondary:hover {
  border-color: #bac9c0;
}

.notice-line {
  max-width: 610px;
  margin: 1rem 0 0;
  color: #738078;
  font-size: 0.92rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.device-shell {
  width: min(100%, 420px);
  min-height: 520px;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 28px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.86), rgba(230, 240, 235, 0.68)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cpath d='M0 90h180M90 0v180' stroke='%2398aaa1' stroke-opacity='.2'/%3E%3C/svg%3E");
  box-shadow: 0 42px 120px rgba(9, 29, 23, 0.18);
  backdrop-filter: blur(20px);
}

.device-top {
  display: flex;
  gap: 0.45rem;
  padding: 0.55rem 0.35rem 1rem;
}

.device-top span {
  width: 0.66rem;
  height: 0.66rem;
  border-radius: 50%;
  background: #a7b6ad;
}

.status-card {
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-radius: 22px;
  padding: 1.35rem;
  background:
    linear-gradient(155deg, rgba(19, 162, 125, 0.94), rgba(17, 23, 20, 0.98)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='360' height='360' viewBox='0 0 360 360'%3E%3Cg fill='none' stroke='%23fff6df' stroke-opacity='.16'%3E%3Cpath d='M52 230c48-98 116-132 205-102 44 15 67 45 70 91'/%3E%3Cpath d='M31 278c68-120 160-158 276-113'/%3E%3Ccircle cx='250' cy='92' r='38'/%3E%3C/g%3E%3C/svg%3E");
  background-size: cover;
  color: #f5fbf8;
}

.status-card p {
  margin: 0;
  color: rgba(245, 251, 248, 0.72);
}

.status-card strong {
  margin-top: 0.3rem;
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  line-height: 1;
}

.status-card span {
  margin-top: 0.85rem;
  color: rgba(245, 251, 248, 0.76);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  margin-top: 0.8rem;
}

.metric-grid div {
  min-height: 6rem;
  border: 1px solid rgba(220, 228, 223, 0.92);
  border-radius: 16px;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.76);
}

.metric-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
}

.metric-grid strong {
  display: block;
  margin-top: 0.35rem;
  font-size: 1.3rem;
}

.section-heading {
  max-width: 690px;
  margin-bottom: 1.6rem;
}

.notice-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
}

.notice-card,
.contact-card,
.order-panel {
  border: 1px solid rgba(220, 228, 223, 0.95);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 16px 42px rgba(10, 35, 27, 0.07);
  backdrop-filter: blur(14px);
}

.notice-card {
  min-height: 250px;
  padding: 1.2rem;
}

.notice-card.strong {
  background: linear-gradient(150deg, #111714, #133b31);
  color: #f5fbf8;
}

.notice-card span {
  display: inline-flex;
  margin-bottom: 2.4rem;
  color: var(--accent);
  font-weight: 900;
}

.notice-card.strong span,
.notice-card.strong p {
  color: rgba(245, 251, 248, 0.72);
}

.notice-card p,
.steps p,
.order-copy p,
.contact-card p {
  margin: 0;
  color: var(--muted);
}

.steps {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 4.6rem 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}

.steps li:last-child {
  border-bottom: 1px solid var(--line);
}

.steps span {
  color: var(--accent);
  font-weight: 900;
}

.order-panel {
  display: grid;
  grid-template-columns: 0.86fr 1fr;
  gap: clamp(1.2rem, 4vw, 3rem);
  padding: clamp(1.2rem, 4vw, 2.2rem);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(246, 251, 248, 0.84)),
    linear-gradient(120deg, rgba(19, 162, 125, 0.08), transparent 55%);
}

.price-box {
  display: grid;
  gap: 1rem;
  margin-top: 1.4rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(19, 162, 125, 0.1), rgba(255, 255, 255, 0.9)),
    #f1f6f3;
}

.price-box strong,
.price-box p {
  display: block;
  margin-top: 0.35rem;
}

.price-box strong {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 1;
}

.payment-badge {
  display: inline-flex;
  border-radius: 999px;
  padding: 0.18rem 0.58rem;
  background: rgba(13, 128, 101, 0.12);
  color: var(--accent-dark);
  font-size: 0.8rem;
  font-weight: 850;
}

.order-form {
  display: grid;
  gap: 0.95rem;
}

fieldset {
  margin: 0;
  border: 0;
  padding: 0;
}

legend,
label {
  color: #2e352f;
  font-size: 0.92rem;
  font-weight: 800;
}

label {
  display: grid;
  gap: 0.38rem;
}

.plan-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 0.45rem;
}

.plan-option {
  position: relative;
  display: block;
  cursor: pointer;
}

.plan-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.plan-option span {
  display: grid;
  min-height: 4.2rem;
  place-items: center;
  gap: 0.16rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 850;
}

.plan-option strong {
  font-size: 1rem;
  line-height: 1.2;
}

.plan-option small {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.plan-option input:checked + span {
  border-color: var(--accent);
  background: #e9f4ef;
  box-shadow: 0 0 0 3px rgba(13, 128, 101, 0.12);
}

input,
textarea {
  width: 100%;
  border: 1px solid #d6e0da;
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font: inherit;
  padding: 0.85rem 0.9rem;
  outline: none;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(13, 128, 101, 0.12);
}

.amount-card {
  display: grid;
  gap: 0.2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  background:
    linear-gradient(150deg, rgba(19, 162, 125, 0.84), rgba(17, 23, 20, 0.98)),
    var(--ink);
  color: #f5fbf8;
  box-shadow: 0 18px 42px rgba(6, 79, 61, 0.18);
}

.amount-card span {
  color: rgba(245, 251, 248, 0.68);
  font-size: 0.82rem;
  font-weight: 850;
}

.amount-card strong {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.05;
}

.amount-card p,
.form-note {
  margin: 0;
  color: var(--muted);
}

.amount-card p {
  color: rgba(245, 251, 248, 0.72);
}

.form-note {
  font-size: 0.92rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.contact-card {
  display: grid;
  gap: 0.45rem;
  padding: 1.25rem;
}

.contact-card:hover {
  border-color: #bac9c0;
  transform: translateY(-1px);
}

.contact-card span {
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 850;
  text-transform: uppercase;
}

.contact-card strong {
  font-size: clamp(1.2rem, 2.5vw, 1.65rem);
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.7rem;
  padding: 1.3rem clamp(1rem, 4vw, 3.5rem);
  border-top: 1px solid rgba(220, 228, 223, 0.95);
  color: var(--muted);
  font-size: 0.9rem;
}

.modal[hidden] {
  display: none;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 18, 14, 0.56);
  backdrop-filter: blur(8px);
}

.modal-panel {
  position: relative;
  display: grid;
  width: min(100%, 420px);
  gap: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(244, 249, 246, 0.96)),
    #ffffff;
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.modal-panel h2 {
  font-size: clamp(1.6rem, 5vw, 2.2rem);
}

.modal-close {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  display: grid;
  width: 2.2rem;
  height: 2.2rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
}

.qr-large {
  width: min(100%, 320px);
  aspect-ratio: 1;
  justify-self: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  object-fit: cover;
}

.modal-note {
  margin: 0;
  color: var(--muted);
}

.modal-amount {
  display: grid;
  gap: 0.2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.85rem;
  background: #f1f6f3;
}

.modal-amount span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
}

.modal-amount strong {
  color: var(--accent-dark);
  font-size: 2rem;
  line-height: 1.05;
}

.modal-amount p {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 1040px) {
  :root {
    --sidebar: 14.75rem;
  }

  .notice-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .sidebar {
    position: sticky;
    top: 0;
    width: 100%;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    overflow-x: auto;
    padding: 0.75rem 1rem;
    border-right: 0;
    border-bottom: 1px solid rgba(220, 228, 223, 0.9);
  }

  .brand small,
  .sidebar-contact {
    display: none;
  }

  .side-nav {
    display: flex;
    flex: 1 0 auto;
    gap: 0.25rem;
  }

  .side-nav a {
    white-space: nowrap;
    padding: 0.65rem 0.75rem;
  }

  .page {
    margin-left: 0;
  }

  .hero,
  .order-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 3rem;
  }

  .device-shell {
    min-height: auto;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .section {
    width: min(100% - 1rem, 1120px);
  }

  .brand {
    min-width: max-content;
  }

  .hero-actions,
  .result-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .metric-grid,
  .notice-grid,
  .plan-options {
    grid-template-columns: 1fr;
  }

  .steps li {
    grid-template-columns: 1fr;
  }
}