/* Archivo is a variable font; each subset file covers weights 400–700. */
@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("../assets/fonts/archivo-vietnamese.woff2") format("woff2");
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("../assets/fonts/archivo-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("../assets/fonts/archivo-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --bg: #E5F0E4;
  --surface: #ffffff;
  --line: #C7DCC5;
  --skeleton: #D5E6D3;
  --ink: #0c2f2a;
  --ink-deep: #05241d;
  --ink-body: #14352b;
  --ink-soft: #37544e;
  --muted: #5f7d77;
  --muted-light: #8aa8a2;
  --link: #0d4a40;
  --accent: #17b07a;
  --lime: #b9ec8f;
  --mint: #e6f6ef;
  --video: #d3e6e3;
  --on-dark: #eaf6f2;
  --tip-bg: #fdf3d4;
  --tip-label: #7a5a00;
  --tip-text: #4a3a05;
  --warn: #f2b90c;
  --font: "Archivo", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); }
body { font-family: var(--font); color: var(--ink); -webkit-font-smoothing: antialiased; }
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--accent); }
button, input, textarea { font-family: var(--font); }
button { cursor: pointer; }
*:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
img { display: block; max-width: 100%; }
.noscript { padding: 40px 28px; text-align: center; }

.page { min-height: 100vh; padding-bottom: 80px; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

/* Header */
.header {
  position: sticky; top: 0; z-index: 5;
  background: rgba(229, 240, 228, 0.93);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header__inner { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; padding-top: 18px; padding-bottom: 18px; }
.logo { display: flex; align-items: center; gap: 9px; color: var(--ink); }
.logo:hover { color: var(--ink); }
.logo__mark {
  width: 30px; height: 30px; border-radius: 10px; background: var(--ink); color: var(--lime);
  display: flex; align-items: center; justify-content: center; font-size: 17px; font-weight: 700;
}
.logo__name { font-size: 19px; font-weight: 700; letter-spacing: -0.02em; }
.topnav { display: flex; gap: 4px; margin-left: 8px; }
.topnav__item {
  padding: 9px 14px; border: 0; border-radius: 999px; white-space: nowrap;
  font-size: 14px; font-weight: 500; background: transparent; color: var(--ink-soft);
}
.topnav__item:hover { color: var(--ink); }
.topnav__item.is-active { background: var(--ink); color: #fff; font-weight: 600; }
.header__tools { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.lang { display: flex; background: var(--surface); border-radius: 999px; padding: 3px; }
.lang__btn {
  padding: 6px 12px; border: 0; border-radius: 999px; font-size: 12px; font-weight: 700;
  background: transparent; color: var(--muted);
}
.lang__btn.is-active { background: var(--ink); color: #fff; }

/* Hero */
.hero { display: flex; flex-direction: column; gap: 24px; align-items: flex-start; padding: 64px 0 40px; }
.kicker { font-size: 13px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }
.hero__title { margin: 0; font-size: 56px; line-height: 1.05; font-weight: 700; letter-spacing: -0.035em; max-width: 22ch; }
.hero__lead { margin: 0; max-width: 58ch; font-size: 19px; line-height: 1.55; color: var(--ink-soft); }
.btn {
  border: 0; font-weight: 600; display: inline-block;
}
.btn--dark { padding: 16px 22px; border-radius: 16px; background: var(--ink); color: #fff; font-size: 15px; }
.btn--dark:hover { color: #fff; background: var(--link); }
.btn--sm { padding: 12px 18px; border-radius: 13px; font-size: 14px; }

/* Home */
.home { display: flex; flex-direction: column; gap: 56px; padding: 40px 0; }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.card {
  display: flex; flex-direction: column; gap: 10px; padding: 26px 24px 28px; background: var(--surface);
  border-radius: 22px; min-height: 170px; color: var(--ink); transition: transform 0.15s, box-shadow 0.15s;
}
.card:hover { color: var(--ink); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(12, 47, 42, 0.08); }
.card__num {
  width: 34px; height: 34px; border-radius: 12px; background: var(--mint); color: var(--link);
  display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 700;
}
.card__title { font-size: 20px; font-weight: 600; line-height: 1.25; }
.card__blurb { font-size: 14px; line-height: 1.5; color: var(--muted); }
.card__meta { margin-top: auto; font-size: 13px; font-weight: 600; color: var(--accent); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 28px; align-items: start; }
.quickstart {
  display: flex; flex-direction: column; gap: 18px; padding: 32px; background: var(--ink);
  border-radius: 26px; color: var(--on-dark);
}
.quickstart .kicker { color: var(--lime); }
.quickstart__title { margin: 0; font-size: 30px; font-weight: 700; letter-spacing: -0.02em; max-width: 24ch; }
.quickstart__step {
  display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 14px; padding: 14px 0;
  border-bottom: 1px solid rgba(234, 246, 242, 0.18); margin: 0;
}
.quickstart__steps { list-style: none; margin: 0; padding: 0; }
.quickstart__n { font-size: 14px; font-weight: 700; color: var(--lime); }
.quickstart__label { font-size: 16px; line-height: 1.45; }
.stores { display: flex; gap: 10px; flex-wrap: wrap; padding-top: 6px; }
.store { padding: 12px 18px; border-radius: 14px; font-size: 14px; }
.store--primary { background: var(--lime); color: var(--ink-deep); font-weight: 700; }
.store--primary:hover { color: var(--ink-deep); background: #a6e07a; }
.store--ghost { border: 1px solid rgba(234, 246, 242, 0.4); color: var(--on-dark); font-weight: 600; }
.store--ghost:hover { color: #fff; border-color: var(--on-dark); }
.shot-figure { display: flex; flex-direction: column; gap: 14px; margin: 0; }
.shot-figure img { width: 100%; max-width: 300px; border-radius: 22px; border: 1px solid var(--line); }
.shot-figure figcaption { font-size: 13px; color: var(--muted); line-height: 1.5; }

.section-title { margin: 0; font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.videos { display: flex; flex-direction: column; gap: 18px; }
.video { display: flex; flex-direction: column; gap: 12px; }
.video__thumb {
  aspect-ratio: 16 / 10; border-radius: 20px; background: var(--video);
  display: flex; align-items: center; justify-content: center;
}
.video__play {
  width: 46px; height: 46px; border-radius: 50%; background: var(--surface);
  display: flex; align-items: center; justify-content: center; color: var(--ink); font-size: 15px;
}
.video__title { font-size: 16px; font-weight: 600; }
.video__meta { font-size: 13px; color: var(--muted); }

/* Section pages */
.section-body { padding-bottom: 40px; }
.content { display: flex; flex-direction: column; gap: 28px; min-width: 0; }
.brands { display: flex; flex-wrap: wrap; gap: 8px; }
.brand {
  padding: 11px 18px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px; font-weight: 600;
  background: var(--surface); color: var(--ink-soft);
}
.brand.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }

.panel { display: flex; flex-direction: column; gap: 12px; padding: 26px; background: var(--surface); border-radius: 22px; }
.panel__title { margin: 0; font-size: 20px; font-weight: 600; }
.skeleton { display: flex; flex-direction: column; gap: 8px; }
.skeleton span { display: block; height: 10px; border-radius: 5px; background: var(--skeleton); }
.slot-label { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted-light); font-weight: 600; }

.accordion { display: flex; flex-direction: column; gap: 10px; }
.acc { background: var(--surface); border-radius: 20px; overflow: hidden; scroll-margin-top: 90px; }
.acc__head {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px;
  padding: 22px 26px; background: transparent; border: 0; text-align: left;
}
.acc__title-wrap { display: flex; align-items: center; gap: 14px; min-width: 0; }
.acc__n { font-size: 12px; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.acc__title { font-size: 19px; font-weight: 600; color: var(--ink); line-height: 1.3; }
.acc__sign { font-size: 18px; color: var(--link); }
.acc__body { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 28px; align-items: start; padding: 0 26px 26px; }
.acc__body--noshot { grid-template-columns: minmax(0, 1fr); }
.acc__text { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.acc__shot { width: 100%; max-width: 220px; border-radius: 18px; border: 1px solid var(--line); }
.tip { display: flex; gap: 10px; align-items: baseline; padding: 14px 16px; border-radius: 14px; background: var(--tip-bg); }
.tip__label { font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--tip-label); }
.tip__text { font-size: 14px; line-height: 1.45; color: var(--tip-text); }

/* Privacy */
.policy { display: flex; flex-direction: column; gap: 12px; }
.policy__meta { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.policy__section {
  display: flex; flex-direction: column; gap: 14px; padding: 26px; background: var(--surface);
  border-radius: 20px; min-width: 0; scroll-margin-top: 90px;
}
.policy__section h3 { margin: 0; font-size: 19px; font-weight: 600; color: var(--ink); }
.policy__section h4 { margin: 6px 0 0; font-size: 16px; font-weight: 700; color: var(--ink); }
.policy__section p, .manual p { margin: 0; font-size: 16px; line-height: 1.6; color: var(--ink-body); text-wrap: pretty; }
.policy__section strong, .manual strong { font-weight: 700; color: var(--ink); }
.policy__section ul, .manual ul {
  margin: 0; padding-left: 22px; display: flex; flex-direction: column; gap: 6px;
  font-size: 16px; line-height: 1.55; color: var(--ink-body);
}

/* Manual chapters */
.manual { display: flex; flex-direction: column; gap: 14px; }
.manual h4 { margin: 8px 0 0; font-size: 17px; font-weight: 700; color: var(--ink); }
.manual td:first-child { font-weight: 600; }
.steps { list-style: none; margin: 0; padding: 0; }
.steps__item {
  display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 10px; padding: 10px 0;
  border-top: 1px solid var(--bg); font-size: 16px; line-height: 1.55; color: var(--ink-body); text-wrap: pretty;
}
.steps__n { font-size: 13px; font-weight: 700; color: var(--accent); padding-top: 2px; }
.block-imgs { display: flex; flex-wrap: wrap; gap: 12px; }
.block-imgs img { max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }
.table-wrap table { width: 100%; border-collapse: collapse; table-layout: fixed; }
.table-wrap th {
  padding: 12px 16px; font-size: 13px; font-weight: 700; color: var(--ink); text-align: left;
  background: #f4f7f6;
}
.table-wrap td {
  padding: 12px 16px; font-size: 14px; line-height: 1.5; color: var(--ink-body);
  border-top: 1px solid var(--line); overflow-wrap: anywhere; vertical-align: top;
}
.table-wrap td a { font-weight: 600; }

/* Sidebar */
.aside { display: flex; flex-direction: column; gap: 18px; }
.aside__box { display: flex; flex-direction: column; gap: 12px; padding: 24px; background: var(--surface); border-radius: 22px; }
.aside__label { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted-light); }
.aside__link { font-size: 15px; color: var(--link); padding: 4px 0; background: none; border: 0; text-align: left; }
.aside__link:hover { color: var(--accent); }
.aside__help { background: var(--lime); }
.aside__help-title { font-size: 18px; font-weight: 700; color: var(--ink-deep); }
.aside__help .btn { align-self: flex-start; }

/* Footer */
.footer {
  max-width: 1180px; margin: 40px auto 0; padding: 28px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 18px; justify-content: space-between; font-size: 13px; color: var(--muted);
}
.footer a { font-weight: 600; }

@media (max-width: 900px) {
  .grid3, .grid2, .split, .acc__body { grid-template-columns: minmax(0, 1fr); }
  .topnav { overflow-x: auto; max-width: 100%; margin-left: 0; order: 3; width: 100%; scrollbar-width: none; }
  .topnav::-webkit-scrollbar { display: none; }
  .hero__title { font-size: 40px; }
  .header__inner { gap: 14px; }
}

@media (max-width: 560px) {
  .container { padding: 0 16px; }
  .footer { padding: 28px 16px; }
  .hero { padding-top: 40px; }
  .hero__title { font-size: 34px; }
  .hero__lead { font-size: 17px; }
  .quickstart { padding: 24px; }
  .quickstart__title { font-size: 24px; }
}