/* =========================================================================
   Microads Support — microads.vn/help
   Giao diện công khai: nền xanh navy + thẻ biểu mẫu trắng nổi bên trên.
   ========================================================================= */

:root {
  --navy-900: #04101f;
  --navy-850: #061527;
  --navy-800: #0a1d38;
  --navy-700: #0e2a4e;
  --navy-600: #143866;

  --blue-600: #1257c9;
  --blue-500: #1e74e8;
  --blue-400: #3b93ff;
  --blue-300: #6fb2ff;
  --blue-100: #d6e7ff;

  --red-600: #b81e1a;
  --red-500: #e0302b;
  --red-100: #fdeceb;

  --green-500: #1fa45d;
  --green-400: #2bd07a;
  --green-50: #eaf7ef;
  --green-200: #bfe6cd;

  --amber-500: #d98a0b;
  --amber-50: #fff6e5;

  --ink-900: #14243d;
  --ink-700: #33465f;
  --ink-500: #64748b;
  --ink-400: #8a99ad;

  --line: #e2e8f2;
  --line-soft: #eef2f8;

  --on-dark: #ffffff;
  --on-dark-mute: #93aacd;
  --on-dark-faint: #5c739a;

  --f-body: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --f-tech: 'Chakra Petch', 'Be Vietnam Pro', sans-serif;

  --r-card: 20px;
  --r-md: 12px;
  --r-sm: 9px;

  --shadow-card: 0 30px 70px -20px rgba(2, 12, 28, .55), 0 2px 8px rgba(2, 12, 28, .18);
  --shadow-soft: 0 6px 20px -8px rgba(15, 40, 80, .22);

  --wrap: 1320px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--on-dark);
  background: var(--navy-900);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* Chỉ hiện viền focus khi điều hướng bằng bàn phím. */
:focus-visible { outline: 2px solid var(--blue-400); outline-offset: 2px; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 16px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ── Nền trang ─────────────────────────────────────────────────────────── */

.page {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(1100px 620px at 78% 8%, rgba(30, 116, 232, .28), transparent 62%),
    radial-gradient(900px 560px at 12% 82%, rgba(18, 87, 201, .20), transparent 60%),
    linear-gradient(168deg, #0a1d38 0%, #061527 55%, #04101f 100%);
}

.page::before {
  /* Lưới bản vẽ kỹ thuật rất mờ, tạo chiều sâu cho nền. */
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(110, 170, 255, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 170, 255, .055) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
  pointer-events: none;
}

/* ── Thanh điều hướng ──────────────────────────────────────────────────── */

.site-head {
  position: relative;
  z-index: 20;
  padding-block: 18px;
}

.head-inner {
  display: flex;
  align-items: center;
  gap: 28px;
}

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

.brand-mark { width: 38px; height: 38px; flex: 0 0 auto; }

.brand-txt {
  font-family: var(--f-tech);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .06em;
  color: #fff;
}

.main-nav { display: flex; gap: 30px; margin-inline: auto; }

.main-nav a {
  position: relative;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--on-dark-mute);
  padding-block: 8px;
  transition: color .18s;
}

.main-nav a:hover { color: #fff; }

.main-nav a[aria-current='page'] { color: var(--blue-300); }

.main-nav a[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--blue-400);
}

.head-right { display: flex; align-items: center; gap: 14px; flex: 0 0 auto; }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 500;
  color: #c9f3dd;
  background: rgba(31, 164, 93, .14);
  border: 1px solid rgba(43, 208, 122, .32);
  white-space: nowrap;
}

.status-pill .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green-400);
  box-shadow: 0 0 0 4px rgba(43, 208, 122, .18);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: .45; }
}

.btn-ghost {
  padding: 9px 20px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(146, 180, 235, .38);
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  transition: background .18s, border-color .18s;
}

.btn-ghost:hover { background: rgba(110, 170, 255, .14); border-color: var(--blue-400); }

.burger {
  display: none;
  width: 42px; height: 42px;
  align-items: center; justify-content: center;
  background: none;
  border: 0;
  color: #fff;
  cursor: pointer;
}

/* ── Khối hero ─────────────────────────────────────────────────────────── */

.hero { position: relative; z-index: 10; flex: 1; padding-block: 26px 54px; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 620px);
  gap: 56px;
  align-items: start;
}

.hero-copy { position: relative; padding-top: 34px; }

.eyebrow {
  margin: 0 0 16px;
  font-family: var(--f-tech);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: #5e8fd0;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(34px, 3.4vw, 52px);
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -.015em;
}

.hero h1 .accent {
  background: linear-gradient(92deg, #7fc0ff, #b9dcff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  margin: 0 0 26px;
  max-width: 44ch;
  font-size: 16px;
  color: #b3c6e2;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  margin: 0 0 34px;
  padding: 0;
  list-style: none;
}

.trust-row li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #c3d4ec;
}

.trust-row svg { width: 20px; height: 20px; color: var(--blue-300); flex: 0 0 auto; }

/* Hình minh hoạ công trình dạng bản vẽ */
.hero-art {
  position: relative;
  margin: 0 0 30px;
  max-width: 560px;
}

.hero-art svg { width: 100%; height: auto; display: block; }

.art-caption {
  position: absolute;
  right: 4%;
  top: 34%;
  font-family: var(--f-tech);
  font-size: 11px;
  line-height: 1.9;
  letter-spacing: .26em;
  color: var(--on-dark-faint);
  text-transform: uppercase;
}

.art-caption::after {
  content: '';
  display: block;
  width: 34px;
  height: 1px;
  margin-top: 10px;
  background: var(--on-dark-faint);
}

/* ── Hai thẻ cam kết SLA ──────────────────────────────────────────────── */

.sla-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 22px;
}

.sla-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  border-radius: 16px;
  border: 1px solid rgba(110, 160, 230, .22);
  background: linear-gradient(135deg, rgba(20, 56, 102, .68), rgba(10, 29, 56, .62));
  backdrop-filter: blur(4px);
}

.sla-card.is-urgent {
  border-color: rgba(224, 48, 43, .38);
  background: linear-gradient(135deg, rgba(92, 20, 18, .62), rgba(38, 14, 20, .58));
}

.sla-ico {
  display: grid;
  place-items: center;
  width: 50px; height: 50px;
  flex: 0 0 auto;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(140deg, var(--blue-400), var(--blue-600));
  box-shadow: 0 8px 22px -8px rgba(30, 116, 232, .9);
}

.sla-card.is-urgent .sla-ico {
  background: linear-gradient(140deg, #f2554f, var(--red-600));
  box-shadow: 0 8px 22px -8px rgba(224, 48, 43, .9);
}

.sla-ico svg { width: 26px; height: 26px; }

.sla-kicker {
  font-size: 13px;
  color: var(--on-dark-mute);
  margin-bottom: 2px;
}

.sla-card.is-urgent .sla-kicker { color: #f1a9a6; }

.sla-value {
  font-family: var(--f-tech);
  font-size: 18.5px;
  font-weight: 700;
  letter-spacing: .01em;
}

.sla-card.is-urgent .sla-value { color: #ff8e8a; }

/* ── Dải 3 bước ────────────────────────────────────────────────────────── */

.steps {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 16px 20px;
  list-style: none;
  border-radius: 14px;
  border: 1px solid rgba(110, 160, 230, .18);
  background: rgba(10, 29, 56, .5);
}

.steps li { display: flex; align-items: center; gap: 12px; flex: 1; }

.step-no {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  flex: 0 0 auto;
  border-radius: 50%;
  border: 1px solid rgba(111, 178, 255, .5);
  font-family: var(--f-tech);
  font-size: 15px;
  font-weight: 700;
  color: var(--blue-300);
  background: rgba(30, 116, 232, .12);
}

.step-txt { font-size: 14px; color: #c3d4ec; }

.step-sep { color: var(--on-dark-faint); flex: 0 0 auto; display: flex; }
.step-sep svg { width: 18px; height: 18px; }
.burger svg { width: 22px; height: 22px; }

/* ── Thẻ biểu mẫu trắng ───────────────────────────────────────────────── */

.form-card {
  position: relative;
  background: #fff;
  color: var(--ink-900);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-card);
  padding: 34px 34px 30px;
}

.form-card h2 {
  margin: 0 0 4px;
  font-size: 27px;
  font-weight: 700;
  letter-spacing: -.01em;
}

.form-card .sub { margin: 0 0 24px; font-size: 14.5px; color: var(--ink-400); }

.field { margin-bottom: 18px; }

/* :not(.drop) — nếu không, quy tắc này (độ ưu tiên cao hơn) sẽ đè display:flex
   của ô tải tệp và đẩy biểu tượng xuống dòng riêng. */
.field > label:not(.drop),
.legend {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-900);
}

.optional { font-weight: 400; color: var(--ink-400); font-size: 13px; }

.input,
.textarea {
  width: 100%;
  padding: 13px 15px;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink-900);
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color .16s, box-shadow .16s;
}

.input::placeholder, .textarea::placeholder { color: #a9b6c8; }

.input:focus, .textarea:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 4px rgba(30, 116, 232, .12);
}

.textarea { min-height: 116px; resize: vertical; line-height: 1.6; }

/* Ô mã dự án + dấu tích xác thực */
.code-wrap { position: relative; }

.code-wrap .input {
  padding-right: 52px;
  font-family: var(--f-tech);
  font-size: 17px;
  letter-spacing: .08em;
}

.code-state {
  position: absolute;
  top: 50%;
  right: 14px;
  transform: translateY(-50%);
  width: 26px; height: 26px;
  display: none;
  place-items: center;
  border-radius: 50%;
}

.code-state.is-on { display: grid; }
.code-state.ok    { background: var(--blue-500); color: #fff; }
.code-state.err   { background: var(--red-500); color: #fff; }
.code-state.load  { background: transparent; color: var(--blue-500); }
.code-state svg   { width: 16px; height: 16px; }

.spin { animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Hộp kết quả xác thực mã dự án */
.verify-box {
  display: none;
  gap: 14px;
  align-items: flex-start;
  margin-top: 12px;
  padding: 14px 16px;
  border-radius: var(--r-md);
  font-size: 14px;
  line-height: 1.5;
}

.verify-box.is-on { display: flex; }

.verify-box.ok  { background: var(--green-50); border: 1px solid var(--green-200); color: #17603a; }
.verify-box.err { background: var(--red-100);  border: 1px solid #f3c9c7;          color: #96201c; }

.verify-ico {
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  flex: 0 0 auto;
  border-radius: 50%;
  color: #fff;
}

.verify-box.ok  .verify-ico { background: var(--green-500); }
.verify-box.err .verify-ico { background: var(--red-500); }
.verify-ico svg { width: 17px; height: 17px; }

.verify-title { font-weight: 700; margin-bottom: 2px; }
.verify-line  { color: #2c5e45; }
.verify-box.err .verify-line { color: #96201c; }

/* ── Chọn mức độ ưu tiên ──────────────────────────────────────────────── */

.prio-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.prio {
  position: relative;
  display: block;
  padding: 15px 16px 15px 46px;
  border: 1.5px solid var(--line);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: border-color .16s, background .16s, box-shadow .16s;
}

.prio:hover { border-color: #c2d3ea; }

.prio input {
  position: absolute;
  opacity: 0;
  width: 0; height: 0;
}

.prio .mark {
  position: absolute;
  top: 17px;
  left: 16px;
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2px solid #c6d1e0;
  background: #fff;
  transition: border-color .16s;
}

.prio .mark::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--blue-500);
  transform: scale(0);
  transition: transform .16s;
}

.prio-name {
  display: block;
  font-family: var(--f-tech);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--ink-900);
  margin-bottom: 2px;
}

.prio-sla  { display: block; font-size: 13.5px; font-weight: 600; color: var(--ink-700); }
.prio-hint { display: block; font-size: 12.5px; color: var(--ink-400); margin-top: 4px; line-height: 1.45; }

.prio.normal .prio-name { color: var(--blue-500); }
.prio.urgent .prio-name { color: var(--red-500); }
.prio.urgent .mark      { border-color: #e8a9a6; }
.prio.urgent .mark::after { background: var(--red-500); }

.prio input:checked ~ .mark        { border-color: var(--blue-500); }
.prio input:checked ~ .mark::after { transform: scale(1); }
.prio.normal:has(input:checked) { border-color: var(--blue-500); background: #f2f7ff; }

.prio.urgent input:checked ~ .mark { border-color: var(--red-500); }
.prio.urgent:has(input:checked) { border-color: var(--red-500); background: #fef4f3; }

.prio input:focus-visible ~ .mark { box-shadow: 0 0 0 4px rgba(30, 116, 232, .2); }

/* ── Vùng tải tệp ─────────────────────────────────────────────────────── */

.drops { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* Chữ trong hai ô dài ngắn khác nhau — ép ô con giãn đầy để hai khối cao bằng nhau. */
.drops > .field { display: flex; flex-direction: column; }
.drops > .field .drop { flex: 1; }

.drop {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 15px 16px;
  border: 1.5px dashed #ccd8e8;
  border-radius: var(--r-md);
  background: #fafcff;
  cursor: pointer;
  transition: border-color .16s, background .16s;
}

.drop:hover, .drop.is-over { border-color: var(--blue-500); background: #f0f6ff; }

.drop input[type=file] { display: none; }

.drop-ico {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  flex: 0 0 auto;
  border-radius: 10px;
  color: var(--blue-500);
  background: #e7f0ff;
}

.drop-ico svg { width: 20px; height: 20px; }

.drop-title { font-size: 14px; font-weight: 600; color: var(--ink-900); }
.drop-hint  { font-size: 12.5px; color: var(--ink-400); }

.file-list { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 7px; }

.file-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 11px;
  border-radius: var(--r-sm);
  background: #f4f7fc;
  border: 1px solid var(--line-soft);
  font-size: 13px;
}

.file-item .nm {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ink-700);
}

.file-item .sz { color: var(--ink-400); font-size: 12px; flex: 0 0 auto; }

.file-item .rm {
  border: 0;
  background: none;
  color: var(--ink-400);
  cursor: pointer;
  padding: 2px 4px;
  line-height: 1;
  font-size: 17px;
  flex: 0 0 auto;
}

.file-item .rm:hover { color: var(--red-500); }
.file-item.bad { background: var(--red-100); border-color: #f3c9c7; color: #96201c; }
.file-item.bad .nm { color: #96201c; }

/* ── Nút gửi ──────────────────────────────────────────────────────────── */

.btn-submit {
  width: 100%;
  margin-top: 22px;
  padding: 17px 20px;
  border: 0;
  border-radius: var(--r-md);
  font-family: var(--f-tech);
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(95deg, var(--blue-600), var(--blue-500) 55%, #2d8cff);
  box-shadow: 0 14px 30px -12px rgba(30, 116, 232, .85);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transition: transform .14s, box-shadow .18s, filter .18s;
}

.btn-submit:hover:not(:disabled) { filter: brightness(1.07); box-shadow: 0 18px 34px -12px rgba(30, 116, 232, .95); }
.btn-submit:active:not(:disabled) { transform: translateY(1px); }
.btn-submit:disabled { opacity: .6; cursor: not-allowed; box-shadow: none; }
.btn-submit svg { width: 18px; height: 18px; }

.privacy {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 14px 0 0;
  font-size: 12.5px;
  color: var(--ink-400);
}

.privacy svg { width: 14px; height: 14px; flex: 0 0 auto; }

/* Thông báo lỗi chung của biểu mẫu */
.form-alert {
  display: none;
  gap: 10px;
  margin-bottom: 18px;
  padding: 13px 15px;
  border-radius: var(--r-md);
  background: var(--red-100);
  border: 1px solid #f3c9c7;
  color: #96201c;
  font-size: 14px;
}

.form-alert.is-on { display: flex; }
.form-alert svg { width: 18px; height: 18px; flex: 0 0 auto; margin-top: 2px; }

/* ── Màn hình gửi thành công ──────────────────────────────────────────── */

.done { text-align: center; padding: 8px 0 4px; }

.done-ico {
  display: grid;
  place-items: center;
  width: 76px; height: 76px;
  margin: 6px auto 20px;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(140deg, var(--green-400), var(--green-500));
  box-shadow: 0 14px 32px -12px rgba(31, 164, 93, .8);
}

.done-ico svg { width: 38px; height: 38px; }
.done h2 { margin-bottom: 8px; }
.done .sub { margin-bottom: 22px; }

.ticket-code {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: var(--r-md);
  border: 1.5px dashed var(--blue-500);
  background: #f2f7ff;
  font-family: var(--f-tech);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--blue-600);
}

.copy-btn {
  border: 0;
  background: none;
  color: var(--blue-500);
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 3px;
}

.copy-btn svg { width: 17px; height: 17px; }

.done-meta {
  display: grid;
  gap: 1px;
  margin: 22px 0 8px;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--line-soft);
}

.done-meta div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 16px;
  background: #fff;
  font-size: 14px;
}

.done-meta dt { color: var(--ink-500); margin: 0; }
.done-meta dd { margin: 0; font-weight: 600; color: var(--ink-900); text-align: right; }

.done-actions { display: flex; gap: 12px; margin-top: 20px; }

.btn-line, .btn-fill {
  flex: 1;
  padding: 13px 18px;
  border-radius: var(--r-md);
  font-size: 14.5px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: background .16s, filter .16s;
}

.btn-line { border: 1.5px solid var(--line); background: #fff; color: var(--ink-700); }
.btn-line:hover { background: #f5f8fd; }

.btn-fill { border: 0; color: #fff; background: linear-gradient(95deg, var(--blue-600), var(--blue-500)); }
.btn-fill:hover { filter: brightness(1.07); }

/* ── Chân trang ───────────────────────────────────────────────────────── */

.site-foot {
  position: relative;
  z-index: 10;
  border-top: 1px solid rgba(110, 160, 230, .16);
  padding-block: 20px;
  font-size: 13.5px;
  color: var(--on-dark-mute);
}

.foot-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.foot-links { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.foot-links a { display: inline-flex; align-items: center; gap: 9px; transition: color .16s; }
.foot-links a:hover { color: #fff; }
.foot-links svg { width: 16px; height: 16px; color: var(--blue-300); }
.foot-links b { color: #fff; font-weight: 600; }

/* ── Thích ứng màn hình ───────────────────────────────────────────────── */

@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero-copy { padding-top: 8px; max-width: 720px; }
  .hero-art  { display: none; }
  .form-card { max-width: 720px; }
}

@media (max-width: 860px) {
  .main-nav, .head-right .btn-ghost { display: none; }
  .head-inner { flex-wrap: wrap; }
  .burger { display: flex; }
  .head-inner { gap: 14px; justify-content: space-between; }
  .head-right { margin-left: auto; }
  .head-right .status-pill { display: none; }

  /* Bản mobile: dải trạng thái nằm riêng một hàng, canh giữa (theo thiết kế). */
  .status-strip { display: flex; justify-content: center; padding-top: 6px; }

  .hero { padding-block: 16px 36px; }
  .hero h1 { font-size: clamp(30px, 8vw, 38px); }
  .lede { font-size: 15px; }
  .trust-row { gap: 16px 22px; margin-bottom: 26px; }

  /* Thứ tự theo ảnh mobile: nội dung → 2 thẻ SLA → biểu mẫu → 3 bước */
  .hero-grid { display: flex; flex-direction: column; }
  .hero-copy { display: contents; }
  .copy-block { order: 1; }
  .sla-cards  { order: 2; margin-bottom: 26px; }
  .form-card  { order: 3; }
  .steps      { order: 4; margin-top: 26px; }

  .form-card { padding: 26px 20px 24px; border-radius: 16px; }
  .form-card h2 { font-size: 23px; }

  .prio-grid, .drops { grid-template-columns: 1fr; }
  /* Thiết kế mobile giữ 3 bước trên MỘT hàng ngang — thu nhỏ để vừa 390px. */
  .steps { gap: 4px; padding: 14px 12px; }
  .steps li { gap: 8px; min-width: 0; }
  .step-no { width: 30px; height: 30px; font-size: 12.5px; }
  .step-txt { font-size: 11.5px; line-height: 1.25; }
  .step-sep svg { width: 14px; height: 14px; }

  .sla-card { padding: 16px; gap: 13px; }
  .sla-ico { width: 46px; height: 46px; }
  .sla-ico svg { width: 22px; height: 22px; }
  .sla-value { font-size: 18px; }

  .foot-inner { flex-direction: column; gap: 12px; text-align: center; }
  .done-actions { flex-direction: column; }
}

@media (max-width: 420px) {
  .sla-cards { grid-template-columns: 1fr 1fr; gap: 12px; }
  .sla-card { padding: 13px 12px; gap: 10px; }
  .sla-ico { width: 40px; height: 40px; }
  .sla-ico svg { width: 19px; height: 19px; }
  .sla-kicker { font-size: 11.5px; line-height: 1.3; }
  .sla-value { font-size: 15px; }
  .ticket-code { font-size: 17px; padding: 11px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ── Trang tra cứu ticket ─────────────────────────────────────────────── */

.wrap.narrow { max-width: 900px; }

.tk-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.tk-code {
  font-family: var(--f-tech);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--ink-900);
}

.tk-badges { display: flex; gap: 8px; flex-wrap: wrap; }

.badge {
  display: inline-block;
  padding: 6px 13px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .03em;
  white-space: nowrap;
}

.badge.prio-normal { background: #e7f0ff; color: var(--blue-600); }
.badge.prio-urgent { background: var(--red-100); color: var(--red-600); }

.badge.st-new              { background: #fff4e0; color: #9a6206; }
.badge.st-in_progress      { background: #e7f0ff; color: var(--blue-600); }
.badge.st-waiting_customer { background: #f2eaff; color: #6b34c9; }
.badge.st-resolved         { background: var(--green-50); color: #15713f; }
.badge.st-closed           { background: #eef1f6; color: var(--ink-500); }

.sla-ok   { color: var(--green-500) !important; }
.sla-soon { color: var(--amber-500) !important; }
.sla-late { color: var(--red-500) !important; }
.sla-done { color: var(--ink-500) !important; }

.readbox {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fafcff;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--ink-700);
  white-space: normal;
  word-break: break-word;
}

/* Dòng thời gian xử lý */
.timeline { list-style: none; margin: 0; padding: 0 0 0 6px; }

.tl-item {
  position: relative;
  display: flex;
  gap: 14px;
  padding: 0 0 18px 18px;
  border-left: 2px solid var(--line-soft);
}

.tl-item:last-child { border-left-color: transparent; padding-bottom: 0; }

.tl-dot {
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--blue-400);
}

.tl-created .tl-dot { border-color: var(--ink-400); }
.tl-status  .tl-dot { border-color: var(--blue-500); }
.tl-reply   .tl-dot { border-color: var(--green-500); }
.tl-sla     .tl-dot { border-color: var(--red-500); }

.tl-meta { font-size: 12.5px; color: var(--ink-400); margin-bottom: 3px; }
.tl-meta b { color: var(--ink-700); font-weight: 600; }
.tl-body { font-size: 14.5px; color: var(--ink-700); line-height: 1.6; word-break: break-word; }

/* ── Trang hướng dẫn ──────────────────────────────────────────────────── */

.guide { display: grid; gap: 18px; }

.guide-card {
  background: #fff;
  border-radius: var(--r-card);
  box-shadow: var(--shadow-card);
  padding: 26px 28px;
  color: var(--ink-700);
}

.guide-card h3 {
  margin: 0 0 12px;
  font-size: 19px;
  color: var(--ink-900);
  display: flex;
  align-items: center;
  gap: 11px;
}

.guide-card h3 svg { width: 21px; height: 21px; color: var(--blue-500); flex: 0 0 auto; }
.guide-card p  { margin: 0 0 10px; font-size: 14.5px; line-height: 1.7; }
.guide-card ul { margin: 0; padding-left: 20px; font-size: 14.5px; line-height: 1.8; }
.guide-card li::marker { color: var(--blue-400); }
.guide-card table { width: 100%; border-collapse: collapse; font-size: 14px; }
.guide-card th, .guide-card td { padding: 11px 12px; border-bottom: 1px solid var(--line-soft); text-align: left; vertical-align: top; }
.guide-card th { color: var(--ink-900); font-weight: 600; background: #f7faff; }
.guide-card tr:last-child td { border-bottom: 0; }

@media (max-width: 860px) {
  .guide-card { padding: 20px; border-radius: 16px; }
  .tk-code { font-size: 20px; }
  .guide-card table, .guide-card thead, .guide-card tbody, .guide-card tr, .guide-card th, .guide-card td { display: block; }
  .guide-card thead { display: none; }
  .guide-card tr { border-bottom: 1px solid var(--line); padding-bottom: 8px; margin-bottom: 8px; }
  .guide-card td { border: 0; padding: 4px 0; }
  .guide-card td::before { content: attr(data-th) ': '; font-weight: 600; color: var(--ink-900); }
}

/* ── Ô mã dự án + nút kiểm tra ─────────────────────────────────────────── */

/* Khách gõ xong hay bấm Enter theo phản xạ; không có nút này thì họ không biết
   phải làm gì tiếp, còn Enter thì gửi luôn cả biểu mẫu khi chưa kiểm tra xong. */
.code-row { display: flex; gap: 10px; align-items: stretch; }
.code-row .code-wrap { flex: 1; min-width: 0; }

.btn-check {
  flex: 0 0 auto;
  padding: 0 20px;
  border: 0;
  border-radius: var(--r-md);
  font-family: var(--f-body);
  font-size: 14.5px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(95deg, var(--blue-600), var(--blue-500));
  cursor: pointer;
  white-space: nowrap;
  transition: filter .16s, opacity .16s;
}

.btn-check:hover:not(:disabled) { filter: brightness(1.08); }
.btn-check:disabled { opacity: .55; cursor: not-allowed; }

@media (max-width: 420px) {
  .btn-check { padding: 0 14px; font-size: 13.5px; }
  .code-wrap .input { font-size: 15px; letter-spacing: .04em; }
}