/* 邻达 LinDa — landing
   Quiet local print shop: warm paper, ink, terracotta.
*/

:root {
  --paper: #f3eee4;
  --paper-deep: #e7dfd1;
  --sheet: #fffbf4;
  --ink: #1b1713;
  --ink-2: #4e463c;
  --ink-3: #7a7166;
  --line: #d5cbba;
  --terra: #c2472e;
  --terra-deep: #9a3320;
  --terra-soft: #f4d8d0;
  --teal: #1f4a46;
  --teal-mid: #2d6862;
  --teal-soft: #d8e5e2;
  --shadow: 0 16px 40px rgba(40, 28, 16, 0.09);
  --shadow-sm: 0 4px 14px rgba(40, 28, 16, 0.06);
  --radius: 16px;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans", "Segoe UI", sans-serif;
  --serif: "Source Serif 4", "Noto Serif SC", "Songti SC", Georgia, "Times New Roman", serif;
  --max: 1120px;
  --pad: clamp(1.1rem, 4vw, 2rem);
  --field: #fff;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --paper: #16130f;
  --paper-deep: #1c1814;
  --sheet: #1c1814;
  --ink: #f3eee4;
  --ink-2: #d4cbbd;
  --ink-3: #a89f93;
  --line: #3d362e;
  --terra: #c2472e;
  --terra-deep: #9a3320;
  --terra-soft: #3d241f;
  --teal: #1f4a46;
  --teal-mid: #2d6862;
  --teal-soft: #243836;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.18);
  --field: #16130f;
}

html[data-theme="dark"] .eyebrow {
  color: #9ec9c3;
}

html[data-theme="dark"] .pkg-badge {
  color: #f4d8d0;
}

html[data-theme="dark"] .form-ok {
  color: #9ec9c3;
}

html[data-theme="dark"] .flyer-tag {
  background: var(--sheet);
}

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 100% -10%, rgba(194, 71, 46, 0.06), transparent 50%),
    radial-gradient(ellipse 60% 40% at 0% 20%, rgba(31, 74, 70, 0.05), transparent 45%),
    var(--paper);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

[data-lang="zh"] body { line-height: 1.75; }
[data-lang="zh"] .en { display: none !important; }
[data-lang="en"] .zh { display: none !important; }

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
button, input, textarea, select { font: inherit; color: inherit; }

.skip {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  background: var(--ink);
  color: var(--sheet);
  padding: 0.5rem 0.8rem;
  z-index: 100;
}
.skip:focus { top: 0.75rem; }

/* ——— header ——— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.7rem var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  letter-spacing: -0.02em;
}
.brand-mark {
  height: 2.45rem;
  width: auto;
  display: block;
  flex: 0 0 auto;
}
.brand-text {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
}
.brand-zh {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.35rem;
}
.brand-en {
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  font-weight: 650;
}
html[data-theme="dark"] .brand-mark,
html[data-theme="dark"] .foot-logo {
  background: #fff;
  border-radius: 6px;
}
.foot-brand { display: grid; gap: 0.55rem; }
.foot-logo {
  height: 5.4rem;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1 1 auto;
  justify-content: flex-end;
}
.nav-links a {
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--ink-2);
}
.nav-links a:hover { color: var(--terra); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.lang-toggle,
.theme-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  background: var(--sheet);
}
.lang-toggle button,
.theme-toggle button {
  border: 0;
  background: transparent;
  padding: 0.28rem 0.65rem;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}
.lang-toggle button[aria-pressed="true"],
.theme-toggle button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--sheet);
}

.nav-cta {
  display: none;
  text-decoration: none;
  background: var(--terra);
  color: #fff8f5;
  padding: 0.42rem 0.85rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
}
.nav-cta:hover { background: var(--terra-deep); }

/* ——— layout ——— */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.section { padding: 4.2rem 0; }
#packages, #process, #compliance, #samples, #contact, #top {
  scroll-margin-top: 4.6rem;
}
.section-tight { padding: 3.2rem 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--teal);
  text-transform: none;
  margin: 0 0 0.85rem;
}
.eyebrow::before {
  content: "";
  width: 1.4rem;
  height: 1px;
  background: var(--terra);
}

.section-head {
  max-width: 38rem;
  margin-bottom: 2rem;
}
.section-head h2 {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.2vw, 2.35rem);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 0.55rem;
}
.lede {
  margin: 0;
  color: var(--ink-2);
  font-size: 1.02rem;
}

/* ——— hero ——— */
.hero {
  padding: 2.4rem 0 3.4rem;
}
.hero-grid {
  display: grid;
  gap: 2.4rem;
  align-items: center;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.05rem, 5.4vw, 3.45rem);
  line-height: 1.18;
  letter-spacing: -0.03em;
  font-weight: 680;
  margin: 0 0 1rem;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--ink-2);
  margin: 0 0 1.25rem;
  max-width: 34rem;
}
.promise {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1.6rem;
  padding: 0;
  list-style: none;
}
.promise li {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-2);
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 0.28rem 0.62rem;
  border-radius: 999px;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.78rem 1.2rem;
  font-weight: 650;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--terra);
  color: #fff8f5;
}
.btn-primary:hover { background: var(--terra-deep); }
.btn-ghost {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}
.btn-ghost:hover { background: var(--ink); color: var(--sheet); }

.hero-note {
  margin: 1rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-3);
}

/* flyer stack */
.hero-art {
  position: relative;
  min-height: 22rem;
}
.flyer {
  background: var(--sheet);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 4px 10px 10px 4px;
  overflow: hidden;
  position: relative;
}
img.flyer {
  display: block;
  object-fit: cover;
}
.flyer-tag {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  z-index: 2;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink-3);
  padding: 0.15rem 0.4rem;
  border-radius: 999px;
}
.stack {
  position: relative;
  height: 22rem;
}
.stack .flyer {
  position: absolute;
  width: 15.2rem;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.stack .f1 { left: 2%; top: 3.4rem; transform: rotate(-8deg); z-index: 1; }
.stack .f2 { left: 24%; top: 0.4rem; transform: rotate(3deg); z-index: 3; }
.stack .f3 { left: 46%; top: 3.8rem; transform: rotate(10deg); z-index: 2; }

/* mock flyer insides */
.fly-rest .bar { height: 2.3rem; background: var(--terra); }
.fly-rest .inner { padding: 0.7rem 0.75rem; }
.fly-rest .kicker { font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--terra); font-weight: 700; }
.fly-rest h3 { font-family: var(--serif); margin: 0.2rem 0 0.5rem; font-size: 1.15rem; line-height: 1.2; }
.fly-rest .lines { display: grid; gap: 0.35rem; }
.fly-rest .lines i {
  display: block;
  height: 0.38rem;
  background: var(--paper-deep);
  border-radius: 99px;
  font-style: normal;
}
.fly-rest .price {
  margin-top: 0.7rem;
  font-family: var(--serif);
  font-size: 1.3rem;
  color: var(--terra);
}

.fly-open { background: var(--teal); color: #f4f8f6; border-color: #163833; }
.fly-open .inner { padding: 1rem 0.85rem; height: 100%; }
.fly-open .kicker { font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; opacity: 0.75; }
.fly-open h3 { font-family: var(--serif); font-size: 2rem; margin: 0.5rem 0 0.3rem; line-height: 1; }
.fly-open .date {
  display: inline-block;
  margin-top: 0.8rem;
  border: 1px solid rgba(255,255,255,0.28);
  padding: 0.25rem 0.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}
.fly-open .dot {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  border: 2px dashed rgba(255,255,255,0.4);
  margin: 1.1rem auto 0;
}

.fly-week .stamp {
  margin: 0.85rem auto 0.4rem;
  width: 4.4rem;
  height: 4.4rem;
  border: 3px solid var(--terra);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--terra);
  font-weight: 800;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  transform: rotate(-12deg);
  text-align: center;
  line-height: 1.15;
}
.fly-week .inner { padding: 0.5rem 0.8rem 0.9rem; text-align: center; }
.fly-week h3 { font-family: var(--serif); font-size: 1.2rem; margin: 0.35rem 0; }
.fly-week p { margin: 0; font-size: 0.72rem; color: var(--ink-2); }

/* ——— packages ——— */
.pkg-grid {
  display: grid;
  gap: 1rem;
}
.pkg {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.3rem 1.4rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.pkg.featured {
  border-color: color-mix(in srgb, var(--terra) 45%, var(--line));
  box-shadow: var(--shadow);
}
.pkg-badge {
  position: absolute;
  top: 0.85rem;
  right: 0.9rem;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--terra-deep);
  background: var(--terra-soft);
  padding: 0.18rem 0.48rem;
  border-radius: 999px;
}
.pkg-name {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.pkg-price {
  font-family: var(--serif);
  font-size: 2.35rem;
  letter-spacing: -0.03em;
  margin: 0.15rem 0 0.15rem;
  line-height: 1;
}
.pkg-price span {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-3);
  letter-spacing: 0;
  font-weight: 500;
  margin-left: 0.2rem;
}
.pkg-lead {
  margin: 0 0 0.85rem;
  color: var(--ink-2);
  font-size: 0.95rem;
}
.pkg ul {
  margin: 0 0 1.1rem;
  padding: 0 0 0 1.05rem;
  color: var(--ink-2);
  font-size: 0.92rem;
}
.pkg li { margin: 0.28rem 0; }
.pkg .btn { margin-top: auto; align-self: flex-start; }
.pkg .checkout-form {
  margin-top: auto;
  display: flex;
}
.pkg .checkout-form .btn { margin-top: 0; width: 100%; }
.pkg .checkout-form .btn:disabled { opacity: 0.55; cursor: wait; }
.checkout-note {
  margin: 1rem 0 0;
  font-size: 0.88rem;
  color: var(--ink-3);
}

.addons {
  margin-top: 1.3rem;
  padding: 0.95rem 1.1rem;
  background: color-mix(in srgb, var(--sheet) 70%, var(--paper-deep));
  border: 1px dashed var(--line);
  border-radius: 12px;
  color: var(--ink-2);
  font-size: 0.9rem;
}
.addons strong { color: var(--ink); font-weight: 650; }

/* ——— process ——— */
.process {
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--paper-deep) 55%, transparent) 12%, transparent);
}
.steps {
  display: grid;
  gap: 0.85rem;
  counter-reset: step;
}
.step {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.05rem 1.1rem 1.1rem 1.15rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: start;
}
.step-num {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--ink);
  color: var(--sheet);
  display: grid;
  place-items: center;
  font-size: 0.82rem;
  font-weight: 700;
  font-family: var(--serif);
}
.step h3 {
  margin: 0 0 0.2rem;
  font-size: 1.02rem;
}
.step p { margin: 0; color: var(--ink-2); font-size: 0.92rem; }

/* ——— compliance ——— */
.compliance {
  background: var(--teal);
  color: #eef6f4;
}
.compliance .wrap {
  display: grid;
  gap: 1.2rem;
  padding-top: 2.4rem;
  padding-bottom: 2.4rem;
}
.compliance h2 {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  margin: 0 0 0.45rem;
  letter-spacing: -0.02em;
}
.compliance p { margin: 0; color: #cfe0dc; max-width: 40rem; }
.comp-list {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.comp-list li {
  padding: 0.7rem 0.85rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  font-size: 0.92rem;
}
.comp-list li::before {
  content: "✓ ";
  color: #e2b3a6;
  font-weight: 700;
}

/* ——— samples ——— */
.who-for {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1.4rem;
  padding: 0;
  list-style: none;
}
.who-for li {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-2);
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 0.28rem 0.62rem;
  border-radius: 999px;
}
.sample-grid {
  display: grid;
  gap: 1.1rem;
}
.sample {
  background: transparent;
  margin: 0;
}
.poster-card {
  position: relative;
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.poster-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.sample-cap {
  margin: 0.65rem 0 0;
  font-size: 0.8rem;
  color: var(--ink-3);
}

/* ——— contact ——— */
.contact-grid {
  display: grid;
  gap: 1.4rem;
}
.channels {
  display: grid;
  gap: 0.7rem;
}
.channel {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.95rem 1rem;
}
.channel dt {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 0.2rem;
}
.channel dd {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.15rem;
}
.pending { color: var(--ink-3); font-style: italic; font-family: var(--sans); font-size: 0.95rem; }

.form-card {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem 1.2rem 1.35rem;
  box-shadow: var(--shadow-sm);
}
.form-card h3 {
  margin: 0 0 0.35rem;
  font-family: var(--serif);
  font-size: 1.35rem;
}
.form-note {
  margin: 0 0 1rem;
  color: var(--ink-3);
  font-size: 0.88rem;
}
label {
  display: block;
  font-size: 0.8rem;
  font-weight: 650;
  margin: 0 0 0.3rem;
  color: var(--ink-2);
}
.field { margin-bottom: 0.8rem; }
input, textarea {
  width: 100%;
  background: var(--field);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  outline: none;
}
input:focus, textarea:focus { border-color: var(--teal-mid); box-shadow: 0 0 0 3px rgba(45, 104, 98, 0.15); }
textarea { min-height: 6.5rem; resize: vertical; }
.form-ok {
  display: none;
  margin-top: 0.8rem;
  padding: 0.7rem 0.8rem;
  background: var(--teal-soft);
  color: var(--teal);
  border-radius: 10px;
  font-size: 0.9rem;
}
.form-ok.show { display: block; }

/* ——— footer ——— */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.6rem 0 2.2rem;
  color: var(--ink-2);
  font-size: 0.88rem;
}
.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  justify-content: space-between;
  align-items: baseline;
}
.foot strong { color: var(--ink); }

/* ——— 800+ ——— */
@media (max-width: 799px) {
  .nav { flex-wrap: wrap; }
  .nav-links {
    order: 3;
    flex: 1 1 100%;
    justify-content: space-between;
    padding-top: 0.15rem;
    padding-bottom: 0.15rem;
  }
  .nav-links a { font-size: 0.84rem; }
}
@media (min-width: 800px) {
  .nav-links { gap: 1.35rem; justify-content: center; }
  .nav-cta { display: inline-flex; }
  .hero-grid { grid-template-columns: 1.15fr 0.95fr; gap: 2rem; }
  .pkg-grid { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
  .pkg.featured { transform: translateY(-6px); }
  .steps { grid-template-columns: repeat(4, 1fr); }
  .step { grid-template-columns: 1fr; }
  .compliance .wrap { grid-template-columns: 1fr 1.1fr; align-items: center; }
  .comp-list { grid-template-columns: 1fr 1fr; }
  .sample-grid { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 0.9fr 1.15fr; align-items: start; }
}

@media (min-width: 1100px) {
  .stack .flyer { width: 16.4rem; height: auto; }
}

@media (max-width: 799px) {
  .hero-art { min-height: 14.5rem; }
  .stack { height: 14.5rem; }
  .stack .flyer { width: 10.6rem; height: auto; }
  .stack .f1 { left: 0; top: 2.4rem; }
  .stack .f2 { left: 22%; top: 0.3rem; }
  .stack .f3 { left: 44%; top: 2.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pkg.featured { transform: none; }
}

:focus-visible {
  outline: 2px solid var(--terra);
  outline-offset: 3px;
}