/* ==========================================================================
   CordCloud (cordcloud.buzz) — Native CSS Stylesheet
   Zero Frameworks, Zero External JS, Instant First-Paint & Pure CSS Motion
   ========================================================================== */

:root {
  --bg-void: #06090c;
  --bg-obsidian: #0b1116;
  --bg-panel: rgba(14, 21, 27, 0.78);
  --bg-panel-solid: rgba(16, 25, 32, 0.94);
  --bg-elevated: rgba(22, 33, 42, 0.72);
  --line-soft: rgba(148, 163, 184, 0.14);
  --line-bright: rgba(16, 185, 129, 0.42);
  --ink-main: #f3f6f8;
  --ink-body: #cbd5df;
  --ink-dim: #8b9bb0;
  --emerald: #10b981;
  --emerald-bright: #34d399;
  --teal: #14b8a6;
  --amber: #f59e0b;
  --amber-soft: #fbbf24;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --container: 1240px;
  --shadow-deep: 0 24px 48px -20px rgba(0, 0, 0, 0.85);
  --shadow-emerald: 0 0 38px -10px rgba(16, 185, 129, 0.34);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Courier New", monospace;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--ink-main);
  background-color: var(--bg-void);
  line-height: 1.72;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: rgba(16, 185, 129, 0.12);
  color: var(--emerald-bright);
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid rgba(16, 185, 129, 0.24);
}

/* ==========================================================================
   Pure CSS Kinetic Background Stage (Grid Pattern + Circuit Wire Traces)
   ========================================================================== */

.canvas-fx {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(ellipse 75% 50% at 15% 0%, rgba(16, 185, 129, 0.16), transparent 62%),
    radial-gradient(ellipse 60% 45% at 88% 12%, rgba(245, 158, 11, 0.1), transparent 58%),
    linear-gradient(175deg, #06090c 0%, #091116 52%, #050709 100%);
}

/* Layer 1: Dynamic Dual-Tier Grid Pattern (格子纹路) */
.fx-dots {
  position: absolute;
  inset: -64px;
  background-image:
    linear-gradient(to right, rgba(16, 185, 129, 0.11) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(16, 185, 129, 0.11) 1px, transparent 1px),
    linear-gradient(to right, rgba(52, 211, 153, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(52, 211, 153, 0.04) 1px, transparent 1px);
  background-size: 64px 64px, 64px 64px, 16px 16px, 16px 16px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 35%, #000 40%, transparent 94%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 35%, #000 40%, transparent 94%);
  animation: dotDrift 24s linear infinite;
}

/* Layer 2: Dynamic Circuit & Electric Wire Traces (电线纹路) */
.canvas-fx::before {
  content: "";
  position: absolute;
  inset: -180px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180' fill='none'%3E%3Cpath d='M0 36 H54 L72 54 H126 L144 36 H180' stroke='%2334d399' stroke-opacity='0.26' stroke-width='1.2'/%3E%3Cpath d='M0 108 H36 L54 126 H108 L126 108 H180' stroke='%2310b981' stroke-opacity='0.22' stroke-width='1'/%3E%3Cpath d='M36 0 V36 M126 54 V108 M72 126 V180 M144 36 V90 L162 108 V180' stroke='%2334d399' stroke-opacity='0.18' stroke-width='1'/%3E%3Cpath d='M18 144 H90 L108 162 H180' stroke='%23fbbf24' stroke-opacity='0.18' stroke-width='1'/%3E%3Ccircle cx='36' cy='36' r='2.5' fill='%2334d399' fill-opacity='0.48'/%3E%3Ccircle cx='126' cy='108' r='2.5' fill='%2334d399' fill-opacity='0.44'/%3E%3Ccircle cx='72' cy='54' r='2' fill='%23fbbf24' fill-opacity='0.48'/%3E%3Ccircle cx='144' cy='36' r='2.2' fill='%2334d399' fill-opacity='0.44'/%3E%3Ccircle cx='54' cy='126' r='2' fill='%2310b981' fill-opacity='0.42'/%3E%3Ccircle cx='108' cy='162' r='2.2' fill='%23fbbf24' fill-opacity='0.42'/%3E%3C/svg%3E");
  background-size: 180px 180px;
  mask-image: radial-gradient(ellipse 88% 78% at 50% 40%, #000 35%, transparent 92%);
  -webkit-mask-image: radial-gradient(ellipse 88% 78% at 50% 40%, #000 35%, transparent 92%);
  animation: wireFlow 34s linear infinite;
}

/* Layer 3: Vertical Electric Current Pulse along Grid Wire */
.canvas-fx::after {
  content: "";
  position: absolute;
  top: -160px;
  left: 24%;
  width: 2px;
  height: 160px;
  background: linear-gradient(180deg, transparent, rgba(52, 211, 153, 0.85), rgba(251, 191, 36, 0.7), transparent);
  box-shadow: 0 0 14px rgba(52, 211, 153, 0.65);
  opacity: 0.65;
  animation: wirePulseV 9s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.fx-halo {
  position: absolute;
  top: -280px;
  left: 50%;
  width: 960px;
  height: 960px;
  margin-left: -480px;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    transparent 0deg,
    rgba(16, 185, 129, 0.14) 55deg,
    transparent 125deg,
    rgba(20, 184, 166, 0.12) 210deg,
    transparent 290deg,
    rgba(245, 158, 11, 0.1) 330deg,
    transparent 360deg
  );
  filter: blur(68px);
  animation: haloSpin 32s linear infinite;
}

.fx-ribbon {
  position: absolute;
  border-radius: 999px;
  filter: blur(78px);
  will-change: transform, opacity;
}

.fx-ribbon--emerald {
  width: 580px;
  height: 260px;
  top: 22%;
  left: -140px;
  background: linear-gradient(120deg, rgba(16, 185, 129, 0.22), rgba(20, 184, 166, 0.08));
  animation: waveFloatA 18s ease-in-out infinite alternate;
}

.fx-ribbon--amber {
  width: 520px;
  height: 240px;
  bottom: 8%;
  right: -120px;
  background: linear-gradient(120deg, rgba(245, 158, 11, 0.16), rgba(16, 185, 129, 0.12));
  animation: waveFloatB 22s ease-in-out infinite alternate;
}

/* Horizontal Wire Bus + Traveling Signal Spark */
.fx-pulse-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(52, 211, 153, 0.42), rgba(251, 191, 36, 0.36), transparent);
  opacity: 0.6;
  animation: scanSweep 14s ease-in-out infinite;
}

.fx-pulse-line::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -180px;
  width: 180px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, #34d399, #fbbf24);
  box-shadow: 0 0 16px rgba(52, 211, 153, 0.85);
  animation: wirePulseH 5.5s linear infinite;
}

@keyframes dotDrift {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(64px, 64px, 0); }
}

@keyframes wireFlow {
  0% { transform: translate3d(0, 0, 0); opacity: 0.85; }
  50% { opacity: 1; }
  100% { transform: translate3d(180px, 180px, 0); opacity: 0.85; }
}

@keyframes wirePulseH {
  0% { transform: translate3d(0, 0, 0); opacity: 0; }
  15% { opacity: 1; }
  85% { opacity: 1; }
  100% { transform: translate3d(calc(100vw + 360px), 0, 0); opacity: 0; }
}

@keyframes wirePulseV {
  0% { transform: translate3d(0, 0, 0); opacity: 0; }
  15% { opacity: 0.75; }
  85% { opacity: 0.75; }
  100% { transform: translate3d(0, calc(100vh + 320px), 0); opacity: 0; }
}

@keyframes haloSpin {
  0% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(1.06); }
  100% { transform: rotate(360deg) scale(1); }
}

@keyframes waveFloatA {
  0% { transform: translate3d(0, 0, 0) rotate(-6deg); opacity: 0.72; }
  100% { transform: translate3d(80px, -45px, 0) rotate(8deg); opacity: 1; }
}

@keyframes waveFloatB {
  0% { transform: translate3d(0, 0, 0) rotate(5deg); opacity: 0.65; }
  100% { transform: translate3d(-75px, -55px, 0) rotate(-7deg); opacity: 0.95; }
}

@keyframes scanSweep {
  0% { top: -2%; opacity: 0; }
  15% { opacity: 0.6; }
  85% { opacity: 0.6; }
  100% { top: 102%; opacity: 0; }
}

@keyframes blinkDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.82); }
}

@media (prefers-reduced-motion: reduce) {
  .canvas-fx::before,
  .canvas-fx::after,
  .fx-dots,
  .fx-halo,
  .fx-ribbon,
  .fx-pulse-line,
  .fx-pulse-line::before,
  .live-dot {
    animation: none !important;
  }
}

/* ==========================================================================
   Layout Container & Utility Classes
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 22px;
}

.section {
  padding: 72px 0;
}

.section--compact {
  padding: 48px 0;
}

.section-head {
  max-width: 760px;
  margin: 0 auto 40px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--emerald-bright);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  margin-bottom: 14px;
}

.section-title {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 2.8vw, 2.25rem);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: -0.02em;
}

.section-desc {
  margin: 0;
  color: var(--ink-dim);
  font-size: 1rem;
}

.text-link {
  color: var(--emerald-bright);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(52, 211, 153, 0.4);
  transition: color 0.18s ease, text-decoration-color 0.18s ease;
}

.text-link:hover {
  color: var(--amber-soft);
  text-decoration-color: var(--amber-soft);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--emerald) 0%, var(--teal) 100%);
  color: #03150e;
  box-shadow: 0 10px 26px -10px rgba(16, 185, 129, 0.72);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px -8px rgba(52, 211, 153, 0.78);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink-main);
  border-color: var(--line-soft);
}

.btn--ghost:hover {
  transform: translateY(-2px);
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--line-bright);
}

.btn--amber {
  background: linear-gradient(135deg, var(--amber) 0%, #eab308 100%);
  color: #160e02;
  box-shadow: 0 10px 26px -10px rgba(245, 158, 11, 0.55);
}

.btn--amber:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -8px rgba(251, 191, 36, 0.68);
}

.btn--sm {
  padding: 8px 16px;
  font-size: 0.88rem;
  border-radius: 10px;
}

.btn--full {
  width: 100%;
}

/* ==========================================================================
   Sticky Topbar Header (Top-Left Logo)
   ========================================================================== */

.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(6, 9, 12, 0.8);
  border-bottom: 1px solid var(--line-soft);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 70px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand__logo {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.65);
}

.brand__meta {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__title {
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.brand__host {
  font-size: 0.74rem;
  color: var(--emerald-bright);
  font-family: var(--font-mono);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-body);
  transition: color 0.16s ease;
}

.nav-menu a:hover {
  color: var(--emerald-bright);
}

.topbar__right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.drawer-nav {
  display: none;
  position: relative;
}

.drawer-nav summary {
  list-style: none;
  cursor: pointer;
  padding: 8px 13px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line-soft);
  font-size: 0.88rem;
  font-weight: 700;
}

.drawer-nav summary::-webkit-details-marker {
  display: none;
}

.drawer-nav__panel {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  width: 220px;
  padding: 10px;
  border-radius: 14px;
  background: var(--bg-panel-solid);
  border: 1px solid var(--line-bright);
  box-shadow: var(--shadow-deep);
  display: grid;
  gap: 4px;
}

.drawer-nav__panel a {
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--ink-body);
}

.drawer-nav__panel a:hover {
  background: rgba(16, 185, 129, 0.14);
  color: var(--emerald-bright);
}

@media (max-width: 960px) {
  .nav-menu {
    display: none;
  }
  .drawer-nav {
    display: block;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  padding: 58px 0 42px;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 32px;
  align-items: center;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.28);
  font-size: 0.84rem;
  color: var(--emerald-bright);
  font-weight: 600;
  margin-bottom: 18px;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--emerald-bright);
  box-shadow: 0 0 10px var(--emerald-bright);
  animation: blinkDot 2.2s ease-in-out infinite;
}

.hero__h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 4vw, 3.05rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.025em;
}

.hero__accent {
  background: linear-gradient(95deg, #ffffff 10%, var(--emerald-bright) 58%, var(--amber-soft) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__lead {
  margin: 0 0 26px;
  color: var(--ink-body);
  font-size: 1.04rem;
  max-width: 620px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.hero__kpis {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.kpi-tile {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
}

.kpi-tile__val {
  display: block;
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--ink-main);
}

.kpi-tile__lbl {
  display: block;
  font-size: 0.8rem;
  color: var(--ink-dim);
  margin-top: 2px;
}

.console-box {
  background: var(--bg-panel);
  border: 1px solid var(--line-bright);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-deep), var(--shadow-emerald);
}

.console-box__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.console-box__title {
  font-size: 0.96rem;
  font-weight: 700;
}

.console-box__badge {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.14);
  color: var(--amber-soft);
  border: 1px solid rgba(245, 158, 11, 0.34);
}

.route-list {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.route-item {
  display: grid;
  grid-template-columns: 112px 1fr 58px;
  align-items: center;
  gap: 12px;
  font-size: 0.86rem;
}

.route-item__name {
  font-weight: 700;
  color: var(--ink-body);
}

.route-meter {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.route-meter__fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--emerald) 0%, var(--amber-soft) 100%);
}

.route-item__ms {
  text-align: right;
  font-family: var(--font-mono);
  color: var(--emerald-bright);
  font-weight: 700;
}

.geo-digest {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  font-size: 0.88rem;
  color: var(--ink-body);
}

.geo-digest strong {
  color: var(--emerald-bright);
}

@media (max-width: 960px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .hero__kpis {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Onboarding Strip
   ========================================================================== */

.steps-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.step-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
}

.step-card__num {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-weight: 800;
  background: rgba(16, 185, 129, 0.14);
  color: var(--emerald-bright);
  border: 1px solid rgba(16, 185, 129, 0.34);
}

.step-card h3 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.step-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-dim);
}

@media (max-width: 820px) {
  .steps-strip {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Single-Row Pricing Grid (All 4 Tiers Strictly in One Row)
   ========================================================================== */

.promo-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px 18px;
  padding: 12px 20px;
  margin-bottom: 26px;
  border-radius: var(--radius-md);
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.28);
  font-size: 0.9rem;
  color: var(--ink-body);
}

.plans-scroll-shell {
  width: 100%;
  overflow-x: auto;
  padding-top: 12px;
  padding-bottom: 10px;
}

.plans-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(220px, 1fr));
  gap: 16px;
  align-items: stretch;
}

.plan-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 24px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  box-shadow: var(--shadow-deep);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.plan-tile:hover {
  transform: translateY(-4px);
  border-color: var(--line-bright);
}

.plan-tile--hot {
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.14) 0%, rgba(14, 21, 27, 0.94) 55%);
  border-color: rgba(52, 211, 153, 0.65);
  box-shadow: var(--shadow-deep), var(--shadow-emerald);
}

.plan-tag {
  position: absolute;
  top: -11px;
  right: 16px;
  padding: 3px 11px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 800;
  color: #03150e;
  background: linear-gradient(135deg, var(--emerald-bright), var(--amber-soft));
}

.plan-tile__name {
  margin: 0 0 4px;
  font-size: 1.15rem;
  font-weight: 800;
}

.plan-tile__sub {
  margin: 0 0 16px;
  font-size: 0.84rem;
  color: var(--ink-dim);
  min-height: 2.6em;
}

.plan-tile__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.plan-yen {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--emerald-bright);
}

.plan-num {
  font-size: 2.35rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
}

.plan-period {
  font-size: 0.88rem;
  color: var(--ink-dim);
}

.plan-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 9px;
  flex-grow: 1;
  font-size: 0.88rem;
  color: var(--ink-body);
}

.plan-list li {
  position: relative;
  padding-left: 20px;
}

.plan-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--emerald-bright);
  font-weight: 800;
}

.pricing-note {
  margin: 14px auto 0;
  max-width: 920px;
  text-align: center;
  font-size: 0.84rem;
  color: var(--ink-dim);
}

/* ==========================================================================
   Architecture & Advantages Bento Grid
   ========================================================================== */

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.bento-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.bento-card:hover {
  border-color: var(--line-bright);
  transform: translateY(-2px);
}

.bento-icon {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: rgba(16, 185, 129, 0.12);
  color: var(--emerald-bright);
  border: 1px solid rgba(16, 185, 129, 0.28);
  margin-bottom: 14px;
}

.bento-card h3 {
  margin: 0 0 8px;
  font-size: 1.06rem;
}

.bento-card p {
  margin: 0;
  font-size: 0.91rem;
  color: var(--ink-dim);
}

@media (max-width: 920px) {
  .bento-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Specification Table
   ========================================================================== */

.matrix-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-soft);
  background: var(--bg-panel);
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 680px;
  text-align: left;
  font-size: 0.92rem;
}

.matrix-table th,
.matrix-table td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--line-soft);
}

.matrix-table thead th {
  background: rgba(16, 185, 129, 0.1);
  color: var(--emerald-bright);
  font-weight: 700;
  font-size: 0.88rem;
}

.matrix-table tbody tr:last-child td {
  border-bottom: none;
}

.matrix-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.025);
}

/* ==========================================================================
   8-Article Knowledge Hub Grid
   ========================================================================== */

.guides-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.guide-card {
  display: flex;
  flex-direction: column;
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.guide-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-bright);
}

.guide-card__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 0.75rem;
  color: var(--ink-dim);
}

.tag-chip {
  padding: 3px 9px;
  border-radius: 6px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--emerald-bright);
  font-weight: 700;
  border: 1px solid rgba(16, 185, 129, 0.24);
}

.guide-card__title {
  margin: 0 0 10px;
  font-size: 1.02rem;
  line-height: 1.42;
}

.guide-card__title a:hover {
  color: var(--emerald-bright);
}

.guide-card__desc {
  margin: 0 0 16px;
  font-size: 0.87rem;
  color: var(--ink-dim);
  flex-grow: 1;
}

.guide-card__more {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--amber-soft);
}

@media (max-width: 1100px) {
  .guides-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .guides-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   User Reviews Section
   ========================================================================== */

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.review-item {
  display: flex;
  flex-direction: column;
  padding: 22px;
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
}

.review-item__stars {
  color: var(--amber-soft);
  font-size: 0.92rem;
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.review-item__text {
  margin: 0 0 16px;
  font-size: 0.92rem;
  color: var(--ink-body);
  flex-grow: 1;
}

.review-item__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 0.82rem;
}

.review-item__user {
  font-weight: 700;
  color: var(--ink-main);
}

.review-item__tag {
  color: var(--emerald-bright);
  font-family: var(--font-mono);
}

@media (max-width: 920px) {
  .reviews-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Pure HTML FAQ Accordion
   ========================================================================== */

.faq-stack {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq-box {
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

.faq-box[open] {
  border-color: var(--line-bright);
}

.faq-box summary {
  list-style: none;
  cursor: pointer;
  padding: 17px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-weight: 700;
  font-size: 0.98rem;
}

.faq-box summary::-webkit-details-marker {
  display: none;
}

.faq-box summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--emerald-bright);
  flex-shrink: 0;
}

.faq-box[open] summary::after {
  content: "−";
  color: var(--amber-soft);
}

.faq-box__body {
  padding: 0 20px 18px;
  font-size: 0.92rem;
  color: var(--ink-body);
  border-top: 1px solid rgba(148, 163, 184, 0.08);
  padding-top: 12px;
}

/* ==========================================================================
   External Authority Resources Grid
   ========================================================================== */

.outbound-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.outbound-card {
  display: block;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.outbound-card:hover {
  border-color: var(--line-bright);
  transform: translateY(-2px);
}

.outbound-card__title {
  display: block;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--emerald-bright);
  margin-bottom: 4px;
}

.outbound-card__info {
  display: block;
  font-size: 0.84rem;
  color: var(--ink-dim);
}

@media (max-width: 860px) {
  .outbound-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .outbound-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Bottom CTA Banner & Footer
   ========================================================================== */

.cta-panel {
  padding: 40px 28px;
  border-radius: var(--radius-lg);
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.2), transparent 65%),
    var(--bg-panel-solid);
  border: 1px solid var(--line-bright);
  box-shadow: var(--shadow-deep);
}

.cta-panel h2 {
  margin: 0 0 10px;
  font-size: clamp(1.45rem, 2.6vw, 2rem);
}

.cta-panel p {
  margin: 0 auto 24px;
  max-width: 680px;
  color: var(--ink-body);
}

.site-foot {
  margin-top: 32px;
  padding: 48px 0 32px;
  border-top: 1px solid var(--line-soft);
  background: rgba(4, 6, 8, 0.86);
}

.foot-cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
  gap: 28px;
  margin-bottom: 30px;
}

.foot-cols h3 {
  margin: 0 0 12px;
  font-size: 0.94rem;
  color: var(--ink-main);
}

.foot-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 0.87rem;
  color: var(--ink-dim);
}

.foot-list a:hover {
  color: var(--emerald-bright);
}

.foot-bottom {
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--ink-dim);
}

@media (max-width: 900px) {
  .foot-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 540px) {
  .foot-cols {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Article Detail Layout & Cross-Navigation
   ========================================================================== */

.article-wrap {
  max-width: 880px;
  margin: 0 auto;
}

.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--ink-dim);
  margin-bottom: 18px;
}

.crumb a:hover {
  color: var(--emerald-bright);
}

.article-shell {
  padding: 36px 34px;
  border-radius: var(--radius-lg);
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  box-shadow: var(--shadow-deep);
}

.article-head {
  padding-bottom: 22px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--line-soft);
}

.article-head h1 {
  margin: 12px 0 12px;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.28;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.85rem;
  color: var(--ink-dim);
}

.geo-callout {
  padding: 16px 18px;
  margin-bottom: 24px;
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.08);
  border-left: 3px solid var(--emerald-bright);
  font-size: 0.94rem;
  color: var(--ink-body);
}

.article-body h2 {
  margin: 28px 0 12px;
  font-size: 1.32rem;
  color: var(--ink-main);
}

.article-body h3 {
  margin: 20px 0 8px;
  font-size: 1.08rem;
  color: var(--emerald-bright);
}

.article-body p {
  margin: 0 0 16px;
  color: var(--ink-body);
  font-size: 1rem;
}

.article-body ul,
.article-body ol {
  margin: 0 0 18px;
  padding-left: 22px;
  color: var(--ink-body);
}

.article-body li {
  margin-bottom: 8px;
}

.article-cta-inline {
  margin: 28px 0;
  padding: 22px;
  border-radius: var(--radius-md);
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.3);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.article-cta-inline p {
  margin: 0;
  font-size: 0.94rem;
  color: var(--ink-main);
}

.pager-row {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.pager-link {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  border: 1px solid var(--line-soft);
  transition: border-color 0.18s ease;
}

.pager-link:hover {
  border-color: var(--line-bright);
}

.pager-link span {
  display: block;
  font-size: 0.78rem;
  color: var(--ink-dim);
  margin-bottom: 4px;
}

.pager-link strong {
  font-size: 0.94rem;
  color: var(--emerald-bright);
}

.related-box {
  margin-top: 32px;
}

.related-box h2 {
  margin: 0 0 16px;
  font-size: 1.24rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

@media (max-width: 720px) {
  .article-shell {
    padding: 24px 18px;
  }
  .pager-row,
  .related-grid {
    grid-template-columns: 1fr;
  }
}